Lost In Space (1960s) Episode Guide

Revision date: March 18, 2024

Compiled by Loren Heisey
https://innermind.com/myguides/

Series notes

The Robinson family is sent on a mission to explore a distant planet in the Alpha Centauri system. John and Maureen with their children Judy, Penny and Will are the Robinson family. Also on board is the young pilot Major Don West and a friendly robot. Their Jupiter II spaceship is sabotaged by Dr. Zachary Smith who is unable to exit the spacecraft before takeoff. By the time the crew regains control of their ship after the mishap they are far off course in unknown space. The Robinsons wander from planet to planet trying to find their way home while being undermined by Dr. Smith who has his own nefarious agenda.

The series was conceived to be about a family's survival on their new world and a pilot was filmed but not aired. Somewhere along the line it was decided changes were needed and Dr. Smith and the Robot were added. The first five episodes included footage from the unaired pilot. At the beginning of the series Dr. Smith was an enemy agent of an unnamed nation. As time when on his character became more and more of an inept cowardly buffoon with the series becoming increasingly camp comic fantasy.

The first season was in black and white with the remaining seasons in color.

Releases were by Twentieth Century Fox Home Entertainment. The series was remastered which was used in the Blu-ray and 2019 DVDs.

Lost in Space was canceled in 1968 after a run of 83 episodes. Two unproduced teleplays were discovered in the Irwin Allen Archives both written by television writer Carey Wilber. Each of these has been adapted into a three-part comic book series by American Gothic.

The first was from script The Curious Galactics and published starting March 2016. The story sends John Robinson, Will Robinson, and Major Don West from a run-of-the-mill radar scouting mission into a potentially deadly alien maze.

The second was from script Malice in Wonderland and published starting September 2016. This adventure begins when Will, Penny, Dr. Smith, and the Robot find themselves whisked away to a very different dimension... one with Mad Hatters, talking teapots, and a very angry Queen of Hearts.

Guide notes

Credits are as listed on the DVD release episodes. Things not in the on screen credits are in brackets. The show did not list many of the people playing monsters and minor characters. These are as listed on IMDB.com.

Principle Production Credits

Created and Produced by Irwin Allen
Story Editor: Anthony Wilson
Associate Producer: Jerry Briskin, William Faralla
Theme: Johnny Williams
Music: Johnny Williams, Herman Stein, Leith Stevens, Alexander Courage, Robert Drasnin, Cyril Mockridge, Cyril Mockridge, Fred Steiner, Mullendore, Gerald Fried, Bernard Herrmann
Music Supervision: Lionel Newman
Director of Photography: Gene Polito, Charles Clarke, Winton Hoch, Frank Carson

Executive in Charge of Production for Van Bernard, Guy Della Cioppa
Astronomical Photographs Copyrighted by The California Institute of Technology
An Irwin Allen Production in association with Jodi Productions, Inc., Van Bernard Productions, Inc., Twentieth Century-Fox Television, Inc., CBS Television Network
William Self In Charge of Production
Filmed at the Hollywood Studios of Twentieth Century-Fox Television, Inc.

Cast

Guy Williams: Professor John Robinson
June Lockhart: Maureen Robinson
Mark Goddard: Don West
Marta Kristen: Judy Robinson
Billy Mumy: Will Robinson
Angela Cartwright: Penny Robinson
Jonathan Harris: Dr. Zachary Smith
Not credited onscreen:
Bob May: The Robot
Dick Tufeld: The Robot's voice

Season 1

0. No Place to Hide

Teleplay by: Shimon Wincelberg and Irwin Allen
Story by: Irwin Allen
Directed by: Irwin Allen
Guest Cast:
Lamar Lundy as The Giant
[Don Forbes as TV Commentator]
[Robert 'Big Buck' Maffei as The Giant Cyclops]
[Ford Rainey as The President]
[Paul Zastupnevich as Bearded Foreign Correspondent]
Synopsis: The Robinsons, Earth's first family of outer space, head to Alpha Centauri in their flying saucer, the Gemini 12, but crash land on an uncharted planet where they deal with its challenges and dangers.
Notes: This was the original pilot that was filmed but not aired.

1. The Reluctant Stowaway

Airdate: September 15, 1965
Written by: S. Bar-David
Directed by: Tony Leader
Guest Cast:
[Tom Allen as Inspector]
[Fred Crane as Alpha Control Technician]
[Don Forbes as TV Commentator]
[Hoke Howell as Security Guard]
[Frank Parker as Security Guard]
[Ford Rainey as The President]
[Hal Torey as General]
[Paul Zastupnevich as Bearded Foreign Correspondent]
Synopsis: On October 16, 1997 the Robinsons are to become Earth's first family of outer space setting out to colonize a planet circling Alpha Centauri. They are accompanied by pilot Don West and a robot. However a saboteur, Dr. Smith, means to set them on a course of doom by reprogramming the Robot to destroy their ship, the Jupiter 2, eight hours in space. Things do not go as Dr. Smith planned and he winds up caught in his own treachery and hurls off into space with the Robinson party as they all become hopelessly lost in space.
Notes: In the original unaired pilot, Alpha Centauri was mistakenly identified as a planet in another galaxy. However, it is a star (actually a trinary star system) rather than a planet, and is in our own galaxy. This was corrected for this episode.

2. The Derelict

Airdate: September 22, 1965
Written by: Peter Packer, Shimon Wincelberg, Irwin Allen
Directed by: Alexander Singer
Guest Cast:
[Richard Basehart as Shakespeare-Reading Tape Recorder Voice]
[Don Forbes as TV Commentator]
[Dawson Palmer as Bubble Creature]
Synopsis: The Jupiter 2 is pulled into a giant ship where Will and Dr. Smith make a first-contact encounter with aliens.
Notes: For this episode some changes wanted by CBS were made regarding the sequencing of the first act, second act and the introduction credits. This cut was used for the original airing, syndication release and the original DVD releases. For the Blu-ray release the original cut was restored.

3. Island in the Sky

Airdate: September 29, 1965
Written by: Norman Lessing, Shimon Wincelberg, Irwin Allen
Directed by: Anton Leader
Guest Cast:
[Judy the Chimpanzee as Debbie the Bloop]
Synopsis: While spacewalking Doctor Robinson is pulled down onto a planet. Major West lands the ship where the planet is found to be cold but habitable. Don and the Robinsons venture out in their chariot to find John while back at the ship Dr. Smith continues to lay plans against the Robinsons.
Notes: This is the first episode that uses the chariot, which was a Spryte Snowcat manufactured and then modified for the show by the Thiokol Corporation.

4. There Were Giants in the Earth

Airdate: October 6, 1965
Written by: Carey Wilber, Shimon Wincelberg, Irwin Allen
Directed by: Leo Penn
Guest Cast:
[Judy the Chimpanzee as Debbie the Bloop]
[Lamar Lundy as The Giant Cyclops]
[Robert 'Big Buck' Maffei as The Giant Cyclops]
Synopsis: Due to the planet's orbit the weather takes an extreme turn for the worse, forcing the Robinsons to abandon ship and head south. A cave containing the remains of a civilized people provides temporary sanctuary but also a danger for the curious.
Notes: Will Robinson sings Greensleeves at the campsite. Greensleeves was the theme music for Lassie (1954) in which June Lockhart starred.

5. The Hungry Sea

Airdate: October 13, 1965
Teleplay by: William Welch
Story by: Shimon Wincelberg
Directed by: Sobey Martin
Guest Cast:
[Judy the Chimpanzee as Debbie the Bloop]
Synopsis: At the Jupiter 2 Dr. Smith obtains orbital data where he finds the planet will get closer to the sun. Initially delighted that the Robinsons are blindly heading to their doom, deprivation from human contact finally gets to the devious doctor and he sends the Robot to warn them that they're jumping straight from a freezer into a frying pan.

6. Welcome Stranger

Airdate: October 20, 1965
Written by: Peter Packer
Directed by: Alvin Ganzer
Guest Cast:
Warren Oates as [Jimmy] Hapgood
Synopsis: The Robinsons meet a fellow lost traveler who left Earth back in 1982 on a small ship. With repairs his ship could make it back to Earth, giving John Robinson the idea of sending him back along with Will and Penny. However Dr, Smith schemes to go in Will and Penny's place.
Notes: The decontamination device used is a Electro-Jet Spray Fog Machine Manufactured by Mulgrew Aircraft Company, Inc with a few fins added.

7. My Friend, Mr. Nobody

Airdate: October 27, 1965
Written by: Jackson Gillis
Directed by: Paul Stanley
Guest Cast:
[William Bramley as Mr. Nobody]
Synopsis: Feeling lonely and alienated from her family, Penny finds solace in her friendship with Mr. Nobody, the voice of a bodiless life force that lives in a cave near a spring. Mr. Nobody becomes fiercely protective of his human friend and trouble arises when Dr. Smith discovers that the playthings Mr. Nobody gave Penny are diamonds.
Notes: This episode contains the first occurrence of one of Dr. Smith's most oft-spoken iconic lines: Oh, the pain, the pain.

8. Invaders from the Fifth Dimension

Airdate: November 3, 1965
Written by: Shimon Wincelberg
Directed by: Leonard Horn
Guest Cast:
[Theodore Lehmann as Alien]
[Joe Ryan as Luminary]
Synopsis: Macabre aliens, which are quite literally talking heads, need a humanoid brain to replace a worn out computer in their spaceship. They capture Dr. Smith, but quickly realize that his brain is unsatisfactory. The aliens release him so that he can bring them somebody more suitable, a small Robinson.
Notes: The first of two episodes where Don flies the jet-pack. The other episode where he does so is The Raft.

9. The Oasis

Airdate: November 10, 1965
Written by: Peter Packer
Directed by: Sutton Roley
Guest Cast:
[Judy the Chimpanzee as Debbie the Bloop]
[Janos Prohaska as Giant Debbie the Bloop]
Synopsis: Before some fruit can be properly tested to insure it is not harmful, Debbie the Bloop and Dr. Smith help themselves to it. As it turns out the fruit has a monstrous effect on all who eat it.
Notes: Judy, Penny, and Will are seen playing Interstellar Monopoly, which has a circular board. This episode aired long before Parker Brothers was acquired by Hasbro (in 1991), spawning a panoply of Monopoly variants. One of the spaces being argued over is The Big Dipper.

10. The Sky Is Falling

Airdate: November 17, 1965
Teleplay by: Barney Slater and Herman Groves
Story by: Herman Groves
Directed by: Sobey Martin
Guest Cast:
Don Matheson as Rethso
Françoise Ruggieri as Moela
[Eddie Rosson as Lunon]
Synopsis: A small, crab-like robot heralds the arrival of a family of colonists from an alien race called the Taurons. John believes that they are peaceful settlers, but Dr. Smith insists that they are the vanguard of an invading army.

11. Wish Upon a Star

Airdate: November 24, 1965
Written by: Barney Slater
Directed by: Sutton Roley
Guest Cast:
[Dawson Palmer as Rubberoid]
Synopsis: Dr. Smith goes into voluntary exile after John confronts him when his laziness and carelessness threaten the group's survival. With Will's assistance, Dr. Smith makes a home in the wreck of an alien spaceship where they find a small alien machine that grants wishes.
Notes: Penny is briefly seen reading a book, with her hand covering the front cover and tape covering writing and photos on the back. The book is one of the Nancy Drew Mystery Stories, The Quest of the Missing Map.

12. The Raft

Airdate: December 1, 1965
Written by: Peter Packer
Directed by: Sobey Martin
Guest Cast:
[Dawson Palmer as Bush Creature]
Synopsis: Will's "message-in-a-bottle" experiments deplete the supply of fuel for the Jupiter 2. John and Don work on an alternate fuel source using plasma. Meanwhile Will inspires them to modify a tank on the Jupiter into a small vessel, a space raft, in the hopes of finding help out in space.
Notes: This is the first episode where the Robot cracks a joke. Dr. Smith asks it if it's familiar with the bag of wind (a balloon) outside. It replies that it's familiar with the bag of wind right here. Dr. Smith confirms the Robot is referring to him.

13. One of Our Dogs Is Missing

Airdate: December 8, 1965
Written by: William Welch
Directed by: Sutton Roley
Guest Cast:
[Charles Dierkop as Horned Mutant]
Synopsis: With Don, John, Will and the Robot away to establish relay stations, a meteor shower precedes the appearance of two fanged visitors to the planet. One is a seemingly innocent Earth dog and the other a seemingly dangerous horned gorilla-bear hybrid. Dr. Smith firmly believes the dog is an alien spy, while Judy and Maureen fear the presence of the other creature, which stalks them unseen.

14. Attack of the Monster Plants

Airdate: December 15, 1965
Written by: William Read Woodfield and Allan Balter
Directed by: Justus Addiss
Guest Cast:
[Judy the Chimpanzee as Debbie the Bloop]
Synopsis: As the Robinsons accumulate the last amounts of fuel needed for lift off, Dr. Smith is expelled from the camp when his cowardice and sloth nearly costs the men's lives. John is undecided about taking Smith when they leave, but Smith discovers the peculiar reproductive habits of alien plants which he uses to his advantage.

15. Return from Outer Space

Airdate: December 29, 1965
Written by: Peter Packer
Directed by: Nathan Juran
Guest Cast:
Reta Shaw as Aunt Clara [Simms]
Walter Sande as Sheriff [George] Baxendale
Sheila Mathews as Ruth Templeton
Robert Easton as [Newsman] Lacy
Harry Harvey, Sr. as Grover
Helen Kleeb as Phone Operator [Rachel]
Anne Dore as First Selectman
Donald Losby as Davey Sims
Keith Taylor as Theodore [the bully]
Johnny Tuohy as First Boy
[Judy the Chimpanzee as Debbie the Bloop]
Synopsis: Using a matter transfer device left behind by the Taurons, Will beams himself back to Earth. He arrives safely in the small town of Hatfield Four Corners, Vermont, but his pleas for help are taken for fanciful tales of a runaway boy.
Notes: Sheila Matthews, who plays Ruth Templeton, worked with producer Irwin Allen on many of his science fiction and disaster productions. The two became close and were married from 1975 until his death in 1991. She also appeared in The Space Vikings and Princess of Space episodes.

16. The Keeper: Part 1

Airdate: January 12, 1966
Written by: Barney Slater
Directed by: Sobey Martin
Guest Cast:
Michael Rennie as The Keeper
[Mike Donovan as Hairy Monster]
[Wilbur Evans as Lighted Head Leader]
Synopsis: The Keeper is an alien who travels the galaxy collecting living pairs of interesting or rare animals. His courtly overtures towards the Robinsons belie his true intention which is to add a pair of humans to his incredible menagerie.
Notes: Will wants to to know how The Keeper is able to speak English. He says he learned it from listening to broadcasts picked up from Earth. This is identical to an explanation which Klaatu (also played by Michael Rennie) gave in the classic The Day the Earth Stood Still (1951).

17. The Keeper: Part 2

Airdate: January 19, 1966
Written by: Barney Slater
Directed by: Harry Harris
Guest Cast:
Michael Rennie as The Keeper
[Wilbur Evans as Lighted Head Leader]
Synopsis: Dr. Smith tries to steal the Keeper's spaceship, but succeeds only in releasing his collection of animals, many of them dangerous. Although The Keeper can easily recall his creatures, he refuses to do so unless the Robinsons give him two of their children.
Notes: These two episodes were the only planned two-part story in Lost in Space.

18. The Sky Pirate

Airdate: January 26, 1966
Written by: Carey Wilber
Directed by: Sobey Martin
Guest Cast:
Albert Salmi as [Captain Alonzo P.] Tucker
Synopsis: Will becomes fast friends with Captain Alonzo P. Tucker, an Earthling who escaped his alien captors to become a wandering space buccaneer. When John and Don examine Tucker's ship they find it's a hyperspace vehicle that could shuttle them all back to Earth. But Tucker has failed to mention a secret that could destroy them all.
Notes: Albert Salmi would appear once again as Captain Alonzo P. Tucker in the episode Treasure of the Lost Planet.

19. Ghost in Space

Airdate: February 2, 1966
Written by: Peter Packer
Directed by: Don Richardson
Guest Cast:
[Dawson Palmer as Bog Monster]
Synopsis: Trying to contact his Uncle Thaddeus during a séance, Dr. Smith summons a monster that abhors sunlight. Smith believes it's the ghost of his Uncle Thaddeus, returned from the spirit world to vent his displeasure at non-believers. Smith's efforts to placate this spirit puts at least one of the Robinsons in peril.
Notes: To trap the invisible creature, John and Don use the cage left behind by the Keeper. The cast's wardrobe undergo some changes starting with this episode.

20. War of the Robots

Airdate: February 9, 1966
Written by: Barney Slater
Directed by: Sobey Martin
Guest Cast:
[William Bramley as Robotoid]
[Eldon Hansen as Robotoid]
[Hal Jon Norman as Dog-faced Alien]
[Ollie O'Toole as Robotoid]
[Robby the Robot as Robotoid]
Synopsis: Will and the Robot come upon a dead robotoid. Though the Robot wants it left alone or destroyed Will decides repair it anyway and the robotoid comes to life. While it quickly presents itself as a subservient boon to the Robinsons, it secretly softens them up for capture by its distant alien masters, who are on their way.
Notes: The guest star was Robby the Robot from the movie Forbidden Planet (1956) and was used as a model for designing the Lost in Space robot.

21. The Magic Mirror

Airdate: February 16, 1966
Written by: Jackson Gillis
Directed by: Nathan Juran
Guest Cast:
Michael J. Pollard as The Boy
[Judy the Chimpanzee as Debbie the Bloop]
Synopsis: Penny and Dr. Smith enter the twilight world of the looking glass when they fall into a full-length alien mirror. Behind the glass lives a care-free Peter Pan-like boy and a shaggy one-eyed monster forever chasing him. While Penny's mind can accept these things for what they are, Dr. Smith's can't.
Notes: The title refers the communication device used in the fairy tale Snow White and the Seven Dwarfs.

22. The Challenge

Airdate: March 2, 1966
Written by: Barney Slater
Directed by: Don Richardson
Guest Cast:
Michael Ansara as The Ruler
Kurt Russell as Quano
Synopsis: Will meets and befriends Quano, a warlike alien prince who tells Will that his father is a great and mighty ruler. Will and John are challenged to a father-and-son athletic competition which after some goading by Quano they except. What they do not know is depending on the outcome of the match there could be dire consequences for the Robinsons.
Notes: This episode has the first occurrence of both Dr. Smith calling the Robot a bubble-headed booby, and the Robot's laughter.

23. The Space Trader

Airdate: March 9, 1966
Written by: Barney Slater
Directed by: Nathan Juran
Guest Cast:
Torin Thatcher as The Space Trader
Synopsis: After the Robinson's food supply is ruined, Dr. Smith makes a deal with a space trader and gives his body for food provided he collects it in 200 years. The unscrupulous trader exercises a clause under the fine print of their signed contract whereby he can collect immediately.
Notes: The Trader says that he is going to attend a trade fair on the planet Torin, which just happens to be the first name of the actor Torin Thatcher. The language duplicator helmet that the Trader adorns to be able to converse with Will and Dr. Smith is the wish machine helmet from the episode Wish Upon a Star.

24. His Majesty Smith

Airdate: March 16, 1966
Written by: Carey Wilber
Directed by: Harry Harris
Guest Cast:
Liam Sullivan as Nexus
Kevin Hagen as Alien
Synopsis: Dr. Smith summons an alien race from Andronica who first ask Will to be their king. Will declines and Dr. Smith thinks himself cleaver by cunningly veering their interest onto him. After Dr. Smith is crowned he learns the true reason the Andronicans chose him and wants out.
Notes: Live coverage of the Gemini VIII splashdown meant that this was postponed. CBS received over 2000 calls of complaint that night.

25. The Space Croppers

Airdate: March 30, 1966
Written by: Peter Packer
Directed by: Sobey Martin
Guest Cast:
Mercedes McCambridge as Sybilla
Sherry Jackson as Effra
[Dawson Palmer as Keel]
Synopsis: A group of space hillbillies has come to the planet to sow some crops and be on their way. Dr. Smith believes they might take him back to Earth and tries to woo the widowed mother for passage.
Notes: Sherry Jackson and Angela Cartwright had played daughters of Danny Williams on The Danny Thomas Show (1953). However neither of them shared a scene in this episode.

26. All That Glitters

Airdate: April 6, 1966
Written by: Barney Slater
Directed by: Harry Harris
Guest Cast:
Werner Klemperer as Bolix
Larry Ward as Ohan
[Mike Donovan as Second Hairy Monster]
[Theodore Lehmann as Disk]
[Dawson Palmer as Larger Hairy Biped]
Synopsis: With only the women and Dr. Smith at the Jupiter 2, a hunted alien named Ohan is taken in by Penny and leaves her a disk in her safekeeping. This leads Dr. Smith and Penny to a ring that will turn anything to platinum.
Notes: The most famous King Midas is popularly remembered in Greek mythology for his ability to turn everything he touched into gold. This came to be called the golden touch, or the Midas touch.

27. The Lost Civilization

Airdate: April 13, 1966
Written by: William Welch
Directed by: Don Richardson
Guest Cast:
Royal Dano as Major Domo
Kym Karath as Princess
[Dawson Palmer as Soldier]
Synopsis: Will finds a sleeping princess whom must kiss to awaken and then must marry. Now her race has been awakened which includes stockpile of soldiers awaiting to begin their plans to conquer the universe starting with Earth.
Notes: Kym Karath played Angela Cartwright's sister in The Sound of Music (1965).

28. A Change of Space

Airdate: April 20, 1966
Written by: Peter Packer
Directed by: Sobey Martin
Guest Cast:
Frank Graham as Alien
Synopsis: In search of precious metals, Dr. Smith, with Will in tow, discovers a compact alien space craft. Will succumbs to curiosity, boards the craft and blasts off on a faster-than-light galactic journey. The round-trip flight turns him into a super genius. Dr. Smith hoping to repeat Will's change takes a round-trip flight of his own, but the experience leaves him a wizened old man instead.
Notes: The alien spaceship is a dressed-up version of the diving bell from another Irwin Allen TV series, Voyage to the Bottom of the Sea.

29. Follow the Leader

Airdate: April 27, 1966
Written by: Barney Slater
Directed by: Don Richardson
Guest Cast:
[Gregory Morton as Canto of Quasti]
Synopsis: Professor Robinson, after being trapped in a cave overnight, comes under the spell of an alien entity. The alien, desperate to leave the planet, guides the professor through the repair of Jupiter 2. The rest of the Robinson party start to see the change in John's personality and question his mental health.
Notes: This episode exists with two different cliffhangers at the end. One is in black and white and is the segue for Attack of the Monster Plants episode, which began the first season repeat cycle during the series' initial run on CBS. The other is in color and is the segue for Blast Off Into Space, the first episode of the second season, which is in color. In syndication, the black and white version was used for many years. The color version is used in the DVD and Blu-ray releases and more recently on cable TV airings.

Season 2

1. Blast Off Into Space

Airdate: September 14, 1966
Written by: Peter Packer
Directed by: Nathan Juran
Guest Cast:
Strother Martin as Nerim
[Judy the Chimpanzee as Debbie the Bloop]
Synopsis: A space miner is blasting the planet apart and the Robinsons have to leave. Dr. Smith wants to stay and become rich with cosmonium, quintessence of the living force that's far more precious than diamonds which the miner was blasting for.
Notes: A new animated main title sequence was created for this first episode in color. It features Will's character tangled up in line and Dr. Smith's character shooting a ray gun. Mr. Nerim's name is an anagram of miner, and his pack animal Robur is an anagram of burro.

2. Wild Adventure

Airdate: September 21, 1966
Written by: William Read Woodfield & Allan Balter
Directed by: Don Richardson
Guest Cast:
Vitina Marcus as Lorelei
[Judy the Chimpanzee as Debbie the Bloop]
Synopsis: Dr. Smith announces the sighting of a familiar star, which he'll only share if Professor Robinson promises to use that information to return to Earth rather than venture on to Alpha Centauri. However actions by Dr. Smith and an intelligent humanoid lady alien threaten to once again leave the crew of the Jupiter 2 lost in space.
Notes: The mysterious green girl seen floating in space returns later in the episode The Girl from the Green Dimension.

3. The Ghost Planet

Airdate: September 28, 1966
Written by: Peter Packer
Directed by: Nathan Juran
Guest Cast:
[Sue England as Space Control Officer O-3]
[Michael Fox as Cybernetic Leader]
Synopsis: Dr. Smith leads the Jupiter 2 to land on an automated planet, home world to the Cybernetics Kingdom, which only prizes humans for their manual dexterity in factory work. Dr. Smith and Will are forced to labor over machine parts on an assembly line. Back at the ship, John and Don make a bid for their freedom.
Notes: The same voice actress, Sue England, who provides the voice for Robot 03 also provided the voice for the female Robot the episode Deadliest Of The Species.

4. Forbidden World

Airdate: October 5, 1966
Written by: Barney Slater
Directed by: Don Richardson
Guest Cast:
Wally Cox as Tiabo
[Janos Prohaska as Giant Bird Monster]
Synopsis: After crash landing on an unknown planet Dr. Smith, without permission, sends the Robot to look around for some info about the environment. When the Robot doesn't return Professor Robinson demands Dr. Smith look for it. After a couple hours Will leaves the ship to try find both and encounters a hermit who plans to attack the Jupiter 2 with his army.
Notes: The lights on the Robots chest have changed in this episode. Previously they had been multicolored but now are an an alternating pattern of five columns, beginning, red, green, red, green, red. The original working title for this episode was The New Planet.

5. Space Circus

Airdate: October 12, 1966
Written by: Bob & Wanda Duncan
Directed by: Harry Harris
Guest Cast:
James Westerfield as Dr. Marvello
Melinda Fee as Fenestra
Dawson Palmer as The [Cosmic] Monster
Michael Greene as Nubu
Harry Varteresian as Vicho
Synopsis: A space circus space arrives at the planet of the Robinsons. The Circus had a limited provisions and they agree to give a free performance to the family in exchange of a meal. Will intervenes in a trick with Fenestra, an illusionist, who verifies that the little one has certain psychic powers. Marvello, the circus owner, intends to take Will on his tour as a member of his team.
Notes: The Robot and Dr. Smith sing the 1929 classic Tiptoe Through the Tulips. Two years later, in 1968, Tiny Tim's version of the song would hit number 17 on the Billboard Top 40.

6. The Prisoners of Space

Airdate: October 19, 1966
Written by: Barney Slater
Directed by: Nathan Juran
Guest Cast:
Dawson Palmer as Monster
[Gregory Morton as Judge Iko]
Synopsis: The Robinsons are put on trial by a space tribunal made up of aliens from various worlds for space crimes. Dr. Smith was not indicted but becomes nervious when he finds out he will be subjected to a memory reading machine.
Notes: The two headed alien monster will appear again in the episode Hunter's Moon.

7. The Android Machine

Airdate: October 26, 1966
Written by: Bob & Wanda Duncan
Directed by: Don Richardson
Guest Cast:
Dee Hartford as Verda
Tiger Joe Marsh as Elevator Operator
Fritz Feld as Mr. Zumdish
[Dawson Palmer as Moss monster]
Synopsis: Dr. Smith finds a strange item vending machine and when operating it Smith brings a female android to the planet. As the android lives with the Robinsons she begins to acquire human qualities and feelings. Problems arise when the manager of the Galactic Warehouse appears to take the machine and the Android which they consider obsolete.
Notes: This was the first appearance of Mr. Zumdish, Manager of the Celestial Department Store, and the Android Verda.

8. The Deadly Games of Gamma 6

Airdate: November 2, 1966
Written by: Barney Slater
Directed by: Nathan Juran
Guest Cast:
Mike Kellin as Myko
Peter Brocco as Alien Leader
[Harry Monty as Geoo]
[Chuck Roberson as Alien Fighter]
[Ronald Weber as Gromack]
Synopsis: A team of warriors arrive on the planet led by Myko, who runs the galactic combat games. Professor Robinson is attacked by gladiator fighters. He defeats the first one and then the second one is stopped by Myko. John is offered to be in a intergalactic fight but he refuses. Dr. Smith steps in and selects a midget to fight thinking he will return to Earth but doesn't know there is a catch.
Notes: Will reveals that his father, John Robinson, lettered in 3 sports while in college and was offered an opportunity to play professional football.

9. The Thief from Outer Space

Airdate: November 9, 1966
Written by: Jackson Gillis
Directed by: Sobey Martin
Guest Cast:
Malachi Throne as Thief
Ted Cassidy as Slave
[Maxine Gates as Fat Princess]
Synopsis: Will, Penny and Dr. Smith get involved with a thief and his towering slave that are searching for a long lost princess.

10. Curse of Cousin Smith

Airdate: November 16, 1966
Written by: Barney Slater
Directed by: Justus Addiss
Guest Cast:
Henry Jones as Jeremiah [Smith]
[Allan Melvin as Little Joe]
Synopsis: When his cousin Jeremiah Smith shows up on the planet, Dr. Smith goes into hiding, knowing that he and Jeremiah are the heirs to the Smith fortune, bequeathed to last surviving member of the family.
Notes: Will is wearing a Band-Aid on his chin claiming he cut himself practicing how to shave.

11. West of Mars

Airdate: November 30, 1966
Written by: Michael Fessier
Directed by: Nathan Juran
Guest Cast:
Allan Melvin as Enforcer [Claudio]
Mickey Manners as Dee
Ken Mayer as Pleiades Pete
[Charles Arthur as Smith's Double]
[Lane Bradford as Barfly]
[Charles Morton as Barfy]
[Eddie Quillan as Bartender]
Synopsis: Zeno,an intergalactic gunslinger, lands on the planet with a space sheriff in hot pursuit. When Zeno turns out to be Dr. Smith's doppelganger he switches places with Smith.
Notes: This is the second time Dr. Smith has had a duplicate. The same thing occurred in the Season 1 episode His Majesty Smith.

12. A Visit to Hades

Airdate: December 7, 1966
Written by: Carey Wilber
Directed by: Don Richardson
Guest Cast:
Gerald Mohr as Morbus
[Mike Donovan as Hades Monster]
Synopsis: Dr. Smith finds an alien harp under a keyhole shaped doorway. Smith plucks a few strings and finds himself descending into a sulphurous pit of fire and brimstone.
Notes: When John Robinson asks the Robot if he and Don will be able to return to their planet, the Robots answer is a take off on Isaac Asimov's first law of robotics: A robot may not injure humans or through inaction cause harm to human beings.

13. Wreck of the Robot

Airdate: December 14, 1966
Written by: Barney Slater
Directed by: Nathan Juran
Guest Cast:
[John Hunt as Saticon #2]
[Paul Kessler as Saticon #3]
[Jim Mills as Saticon #1]
Synopsis: Three Saticones arrive on the planet with the sole purpose of seizing the Robot. These aliens promise to study the Robot and return it but their true intentions are to create more robots so they can conquer the Earth.
Notes: Possibly the first time that the tag line resistance is futile is used when the aliens are talking to the Robot. The Borg, in the Star Trek universe, made the line famous.

14. The Dream Monster

Airdate: December 21, 1966
Written by: Peter Packer
Directed by: Don Richardson
Guest Cast:
John Abbott as Sesmar
Dawson Palmer as Android Raddion
Synopsis: Sesmar is a scientist who has made an android to which he wants to add human virtues. He hatches a plan and uses a strange device capable of stealing the best qualities of each of the Robinsons and then implanting them in his robot.
Notes: Raddion is an anagram of android and Sesmar is Ramses spelled backwards. Penny sings, Soldier, soldier won't you marry me? In that song a deceitful soldier tricks a trusting maid out of her grandfather's coat, hat, boots, and gloves.

15. The Golden Man

Airdate: December 28, 1966
Written by: Barney Slater
Directed by: Don Richardson
Guest Cast:
Dennis Patrick as Keema
Ron Gans as Frog Alien
Bill Troy as Handsome Alien
Synopsis: Two aliens choose the Robinson's planet to fight a war on behalf of their respective planets. Penny befriends the repulsive, unpleasant and belligerent frog-like alien while Dr. Smith is drawn to the resplendent, friendly, and helpful golden man. Which of the two aliens should the Robinsons side with?
Notes: The original plan was for Keema to turn into a werewolf at the end but CBS felt that this might be too scary for young children watching the show. A working title for this episode was Twinkle Twinkle Little War.

16. The Girl from the Green Dimension

Airdate: January 4, 1967
Written by: Peter Packer
Directed by: Nathan Juran
Guest Cast:
Vitina Marcus as Athena
Harry Raybould as Urso
Synopsis: The green alien woman returns and once again attempts to entrance Dr. Smith with her alluring writhing and mangled English cooing. Dr. Smith plays along hoping to make use of her abilities.
Notes: Several times, Athena refers to the cute way that Dr. Smith wiggles his nose. This is a nod to the TV show Bewitched. There is also a similar twitch sound effect when Dr. Smith wiggles his nose like Samantha does on Bewitched.

17. The Questing Beast

Airdate: January 11, 1967
Written by: Carey Wilber
Directed by: Don Richardson
Guest Cast:
Hans Conried as Sagramonte
[Jeff County as Gundemar]
[June Foray as Gundemar]
Synopsis: An aged space medieval-like knight, Sir Sagramonte of Altair, and his bespectacled basset hound have been chasing throughout galaxies for Gundamar, a dragon-like questing beast. They appear on the planet where Will takes a liking to Sagramonte, and Penny becomes friends with Gundamar.
Notes: The title refers to The Questing Beast, a monster from Arthurian legend and the subject of quests by knights.

18. The Toymaker

Airdate: January 25, 1967
Written by: Bob & Wanda Duncan
Directed by: Robert Douglas
Guest Cast:
Walter Burke as Mr. O. M.
Fritz Feld as [Mr.] Zumdish
Larry Dean as Wooden Soldier
Tiger Joe Marsh as Security Guard
Dawson Palmer as Monster
Synopsis: Dr. Smith and Will find an alien merchandise-ordering machine and are transported to a toymaker's world inside.
Notes: The laser rifle carried by the security guard is the same prop used as Mr Freeze's freeze gun in the Batman TV show.

19. Mutiny in Space

Airdate: February 1, 1967
Written by: Peter Packer
Directed by: Don Richardson
Guest Cast:
Ronald Long as Admiral Zahrk
Synopsis: Space pirate, Admiral Zahrk, is searching for the mutineers who abandoned him in space. He lands on the Robinson Planet in need of repairs and a crew so he shanghais Will, Dr. Smith and the Robot.
Notes: Zuben Algenubi is approximately 77.2 light years from Earth. Alpha Centauri the Robinson's destination is 4.4 light years from Earth.

20. The Space Vikings

Airdate: February 8, 1967
Written by: Margaret Brookman Hill
Directed by: Ezra Stone
Guest Cast:
Sheila Mathews as Brynhilda
Bern Hoffman as Thor
[Frank Delfino as Troll of Niffelheim]
[John Hunt as Hairy Beast]
[Harry Monty as Troll of Niffelheim]
Synopsis: Through some harmless playacting, Dr. Smith unintentionally conjures up the magical gauntlets and war hammer of the Norse god Thor. Taking him for a mighty warrior, Brynhilda spirits Smith off to Asgard for a showdown with all-powerful Thor.
Notes: The extended index and little finger that Thor and Will used on each other is known as the Sign of the Horns, which is used in several cultures. In modern times, it's often used by those listening to heavy metal.

21. Rocket to Earth

Airdate: February 15, 1967
Written by: Barney Slater
Directed by: Don Richardson
Guest Cast:
Al Lewis as Zalto
[Joe E. Tata as Zalto's Dummy]
Synopsis: The space wizard Zalto appears just to Dr. Smith which causes problems for Smith. Zalto offers to Smith a possible journey through his own spacecraft but Smith's real intent is to go to Earth.
Notes: This was the first television appearance of Al Lewis after Universal Studios ended its production of The Munsters TV show, in which he played Grandpa Dracula. When it became clear that the episode was running short, director Don Richardson asked Jonathan Harris and co-star Al Lewis to improvise. They effectively went into a vaudeville routine.

22. The Cave of the Wizards

Airdate: February 22, 1967
Written by: Peter Packer
Directed by: Don Richardson
Guest Cast:
[Larry Dean as Mummy
[Michael Fox as Alien on Computer Screen]
[John Hunt as Gog - First Rock Monster]
[Paul Kessler as Magog - Second Rock Monster]
[Joe E. Tata as Computer Eye]
[Paul Zastupnevich as Computer Brain]
Synopsis: All of the Robinsons are working hard to fix the ship aiming for leave the planet for good due to a short window of time the atmosphere of the planet will have a break allowing them to escape. Dr. Smith discovers a cave which has devices containing the stored memories of the Draconians, an ancient civilization that attempts to resurrect their long-dead leader in the person of Dr. Smith. As the liftoff countdown draws near, Smith falls ever-more-so under the influence of the Draconians.
Notes: The chronometer seen on the Jupiter 2 is actually a Spartus backwards clock which was sold as a novelty item in department stores.

23. Treasure of the Lost Planet

Airdate: March 1, 1967
Written by: Carey Wilber
Directed by: Harry Harris
Guest Cast:
Albert Salmi as [Alonzo P.] Tucker
Jim Boles as Smeek
[Craig Duncan as Deek]
[Dawson Palmer as Izralim]
Synopsis: Captain Tucker, the space pirate, returns searching for the treasure of Beelibones, a Betelgeusian bandit. While playing a game Penny discovers a gold coin which leads the greedy Dr. Smith to find the booty which turns out to be a metallic talking head in a box.
Notes: This is a sequel to the Season 1 episode The Sky Pirate. Many plot elements and character names are based on Treasure Island by Robert Louis Stevenson, for example Billy Bones becomes Beelibones. In the episode the treasure is supposedly from the jewel-rich planet of Betelgeuse. In reality Betelgeuse is a distinctively red star which is visible to the naked eye in the night sky of the northern hemisphere.

24. Revolt of the Androids

Airdate: March 8, 1967
Written by: Bob & Wanda Duncan
Directed by: Don Richardson
Guest Cast:
Dee Hartford as Verda
Don Matheson as IDAK Alpha 12
Dawson Palmer as IDAK Omega 17
Synopsis: Verda the android returns and takes refuge on the Robinsons' planet. She has become more human over time and this is not approved by the Galactic Warehouses where she was manufactured. The store dispatches a killer android, IDAK, to destroy her.
Notes: This is a sequel to the earlier Season 2 episode The Android Machine. IDAK stands for Instant Destroyer And Killer.

25. The Colonists

Airdate: March 15, 1967
Written by: Peter Packer
Directed by: Ezra Stone
Guest Cast:
Francine York as Niolani
[Dave Dunlap as First Alien Guard]
[Orwin C. Harvey as Third Alien Guard]
[Seymour Konic as Fourth Alien Guard]
[Erwin Niel as Second Alien Guard]
Synopsis: Niolani, the female leader of a civilization of warrior women arrives with the purpose of the colonization of the planet. She takes the men of the group prisoner and turns them into her slaves forcing them to prepare a launch pad and arch for the arrival of her people.
Notes: Dr. Smith painted the underside of the arch the Amazon Warriors are to pass through on his back like Michelangelo. He then referenced Vincent van Gogh saying the Agony I endure for the Ecstasy of my art!

26. Trip Through the Robot

Airdate: March 22, 1967
Written by: Barney Slater
Directed by: Don Richardson
Synopsis: Faced with a critical power-shortage after Dr. Smith messes up, the Robot is very low on power and ventures into the Valley of Shadows to die. While there the Robot is affected by strange forces and grows to the size of a building. Will and Smith enter the Robot to try to reverse the process and save him.
Notes: The bit of prose the Robot says referring to Dr. Smith, a man who stumbling feet go crushing blossoms without end, who's fumbling hands are thrust among the heartstrings of a friend is actually a paraphrase from a great poem called A Fools Prayer written by E. Sill in the 1800's.

27. The Phantom Family

Airdate: March 29, 1967
Written by: Peter Packer
Directed by: Ezra Stone
Guest Cast:
Alan Hewitt as Lemnoc
Synopsis: While John and Maureen are away observing volcanic activity, the alien scientist Lemnoc captures Don, Judy, Penny, and Dr. Smith and replaces them with android duplicates. Lemnoc then forces Will and the Robot to train the duplicates in survival skills, hoping that they will be an inspiration to his own people, who are losing the will to live.
Notes: The soundtrack uses sections of Bernard Herrmann's score for The Day the Earth Stood Still (1951) movie.

28. The Mechanical Men

Airdate: April 5, 1967
Written by: Barney Slater
Directed by: Seymour Robbie
Guest Cast:
[Jim Mills as Voices]
[Joe E. Tata as Purple Robot]
Synopsis: The planet is invaded by an army of tiny robots who closely resemble the Robinsons' Robot and proclaim him as their long-predicted king. The Robot agrees to become their king, but when he is not the ruthless ruler they expected, they decide that he needs some Dr. Smith in him.
Notes: The mechanical men are just Remco toy robots.

29. The Astral Traveler

Airdate: April 12, 1967
Written by: Carey Wilber
Directed by: Don Richardson
Guest Cast:
Sean McClory as Hamish
[Dawson Palmer as Angus]
Synopsis: As a result of a storm, Dr. Smith and Will take shelter in a cave, which then collapses on them. The Robot cannot fit and returns to the Jupiter 2 for help. In the cave they discover a revolving door that transports them to Earth, 19th-century Scotland.
Notes: Per the title, astral travel refers to times of out-of-body experiences perceived as unfolding in environments other than the physical world, by an astral counterpart of the physical body that separates from it and travels to one or more astral plane.

30. The Galaxy Gift

Airdate: April 26, 1967
Written by: Barney Slater
Directed by: Ezra Stone
Guest Cast:
John Carradine as Arcon
Jim Mills as Saticon #1
[Judy the Chimpanzee as Debbie the Bloop]
[John Hunt as Saticon #2]
[Paul Kessler as Saticon #3]
[Harry Monty as Monster Fly]
Synopsis: Mr. Arcon, a shape-shifting alien, gives Penny a magical belt which Dr. Smith conspires to trade to other aliens in exchange for passage to Earth. Penny will not give up the belt entrusted to her even if it means their deaths.
Notes: Saticon is a type of video imaging tube used in video cameras and camcorders before solid state imaging devices were available.

Season 3

1. Condemned of Space

Airdate: September 6, 1967
Written by: Peter Packer
Directed by: Nathan Juran
Guest Cast:
Marcel Hillaire as Phanzig
[Duke Fishman as Convict]
[Ben Frommer as Convict]
[Eldon Hansen as Robot Guard]
[Lars Hensen as Convict]
[Mike Morelli as Convict]
[Gil Perkins as Convict]
[Robby the Robot as Robot]
Synopsis: Taking off at the last minute, the Jupiter 2 and its crew barely avoid being destroyed along with their foster planet by a massive comet. Damaged by the near collision they dock with a massive alien spaceship that turns out to be an automated prison full of frozen convicts.
Notes: This is the second episode which Robby the Robot is in. Starting with this episode the cast's wardrobe also undergo changes reflecting the colorful cultural tone of the late 1960's.

2. Visit to a Hostile Planet

Airdate: September 13, 1967
Written by: Peter Packer
Directed by: Sobey Martin
Guest Cast:
Robert Foulk as Cragmire
Pitt Herbert as Grover
Claire Wilcox as Stacy
Norman Leavitt as Charlie
Robert Pine as Craig
[Bart La Rue as Car Radio Announcer]
Synopsis: Passing through a time warp, the Robinsons return to Earth in the year 1947. They are mistaken as alien invaders by the inhabitants of the small town where the ship landed.
Notes: This was one of Irwin Allen's favorite episodes because it cost so little to make. No crazy costumes, no elaborate makeups and almost no special effects. It was shot on the Fox lot just outside the sound stages. It was also one of only two episodes that featured the full scale mockup of the Jupiter 2.

3. Kidnapped in Space

Airdate: September 20, 1967
Written by: Robert Hamner
Directed by: Don Richardson
Guest Cast:
Grant Sullivan as Alien #764
Carol Williams as Alien #1220
[Craig Chudy as Alien Soldier #3]
[Maritza Elsen as Alien Soldier #1]
[Rita Fabotta as Alien Soldier #4]
[Joey Russo as Young Smith]
[Jeffrey Trayler as Alien Soldier #2]
Synopsis: Dr. Smith responds to a plea for medical assistance and ends up on a giant alien spaceship where he is ordered to perform brain surgery on the crew's leader.
Notes: This episode had the first appearance of the Space Pod. Some of the consoles and panels used in the alien ship are parts from the Time Tunnel TV series. The unit located below the CRT screen is an EICO Model 377 Audio Signal Generator normally used for hi-fi and stereo repair and servicing.

4. Hunter's Moon

Airdate: September 27, 1967
Written by: Jack Turley
Directed by: Don Richardson
Guest Cast:
Vincent Beck as Megazor
[Fred Krone as Invisibo]
[Jim Mills as Voices]
[Joe E. Tata as Robot Judge]
Synopsis: After Professor Robinson kills a hostile alien, he's confronted by a disgruntled alien hunter who blames him for destroying his prey planned for a great hunt. So John must replace the hunter's dead prey.
Notes: The Hunter's Moon is the first full moon after the harvest moon, which is the full moon nearest the autumnal equinox. However for this episode the title does not refer to any of Earth's Moon phases, but to the fact that the episode is about a hunter.

5. The Space Primevals

Airdate: October 4, 1967
Written by: Peter Packer
Directed by: Nathan Juran
Guest Cast:
Arthur Batanides as Rangah
Synopsis: Major West and Dr. Smith are on a mission in the Chariot to cap a volcano when when they are captured by some primitive caveman type aliens ruled by a computer.

6. Space Destructors

Airdate: October 11, 1967
Written by: Robert Hamner
Directed by: Don Richardson
Guest Cast:
Tommy Farrell as Cyborg
[Bart La Rue as Alien Machine]
Synopsis: Dr. Smith ventures inside a cave and finds an alien machine capable of creating cyborgs. He starts to make an army of cyborgs, with the intention of becoming master of the universe.
Notes: This episode had sustained sword fights between Professor Robinson and the many Dr. Smith cyborgs. Guy Williams had played Zorro in the TV series that ran from 1957 until 1961 where he received professional training in fencing with the Belgian champion Fred Cavens.

7. The Haunted Lighthouse

Airdate: October 18, 1967
Written by: Jackson Gillis
Directed by: Sobey Martin
Guest Cast:
Woodrow Parfrey as Colonel [Silas] Fogey
Lou Wagner as J-5
Kenya Coburn as Zaybo
[Judy the Chimpanzee as Debbie the Bloop]
[Zamba as The Lion]
Synopsis: On a lost planet Penny finds an injured boy in a cave which the Robinsons rescue and take him on board the Jupiter 2. After blasting off into space the boy appears to have some strange powers.
Notes: The writers predicted that the teams in the 1984 World Series which Col. Fogey had a recording of, would be the New York Mets and California Angels, they were in fact the Detroit Tigers and San Diego Padres.

8. Flight Into the Future

Airdate: October 25, 1967
Written by: Peter Packer
Directed by: Sobey Martin
Guest Cast:
Lew Gallo as Commander Fletcher
Don Eitner as Sergeant Smith
[John Hunt as First Stone Monster]
[Bart La Rue as Illusion Machine]
Synopsis: Dr. Smith accidentally launches the Space Pod, sending him, Will and the Robot to a nearby planet. There they find the Jupiter 2 is now an archaeological site and that they are in the future.
Notes: The Robot's statement, There are more jamming potentials on this planet, Will Robinson, than can be computed by my computer banks, is a variation of, There are more things in heaven and earth, Horatio, / Than are dreamt of in your philosophy, from Hamlet, Act 1, scene 5.

9. Collision of Planets

Airdate: November 8, 1967
Written by: Peter Packer
Directed by: Don Richardson
Guest Cast:
Daniel Travanti as Llan [Space Hippie]
Linda Gaye Scott as Alien Girl
Stephan Merjanian as Alien Hippie #4
Joe E. Tata as Short Alien
Synopsis: A group of space hippies are sent to destroy the planet the Robinsons are on stranded before it crashes into an another inhabited world.

10. Space Creature

Airdate: November 15, 1967
Written by: William Welch
Directed by: Sobey Martin
Guest Cast:
[Ron Gans as Creature]
[Fred Krone as Id Monster]
[Dawson Palmer as Creature]
Synopsis: The Jupiter 2 becomes engulfed by a strange blue mist and then one by one crew members inexplicably begin to disappear.
Notes: This is the only time in which the nuclear reactor at the very bottom of the Jupiter 2 is shown.

11. Deadliest of the Species

Airdate: November 22, 1967
Written by: Robert Hamner
Directed by: Don Richardson
Guest Cast:
Ron Gans as Alien Leader
Lyle Waggoner as Mechanical Man I
Ralph Lee as Mechanical Man II
[Sue England as Female Robot]
Synopsis: The Robot falls in love with an alluring female robot that turns out to be a remorseless killer wanted by the Zeta Galaxy Law Enforcement Bureau.
Notes: This is the only time in the show that the quote, Danger, Will Robinson! Danger! is used, as the space capsule Alpha 784 is crashing to the surface.

12. A Day at the Zoo

Airdate: November 29, 1967
Written by: Jackson Gillis
Directed by: Irving Moore
Guest Cast:
Leonard Stone as Farnum
Ronald Weber as Mort
Gary Tigerman as Oggo
Synopsis: Farnam, an interstellar zoo-keeper, kidnaps the Robinsons with the intent of making them the main attractions in his cut-rate menagerie.
Notes: What appears to be the head/face of Farnum was seen on the wall of Sesmar's laboratory in The Dream Monster episode.

13. Two Weeks in Space

Airdate: December 13, 1967
Written by: Robert Hamner
Directed by: Don Richardson
Guest Cast:
Fritz Feld as [Mr.] Zumdish
Richard Krisher as MXR
Eric Matthews as QZW
Edy Williams as Non
Carroll Roebke as Tat
Synopsis: The Robinsons leave the camp leaving Dr. Smith, Will, and the Robot alone. Strange-looking alien fugitives alter their appearances to look human and pretend to be tourists as Smith turns the Jupiter 2 into a hotel.
Notes: Dr. Smith tells Will he won't be able to vote until he's 21. While that was true at the time the show was filmed it wasn't true for the time the show took place in. At the time of production no one could have known that in 1971 the 26th Amendment would pass and lower the voting age to 18.

14. Castles in Space

Airdate: December 20, 1967
Written by: Peter Packer
Directed by: Sobey Martin
Guest Cast:
Alberto Monte as Chavo
Corinna Tsopei as [Princess] Reyka
Synopsis: The Robinsons discover a frozen princess who is being pursued by an extortionist that plans on kidnapping her to hold for ransom.
Notes: The song Will and Judy are singing is Sloop John B which was recorded by The Beach Boys and included on their album Pet Sounds in 1966. Actually the song was a very old Bahamian folk song from Nassau. A transcription of it was first published in 1916 and a version of it was actually included in Carl Sandburg's The American Songbag in 1927.

15. The Anti-Matter Man

Airdate: December 27, 1967
Written by: K.C. Alison
Directed by: Sutton Roley
Guest Cast:
[Fred Krone as Alien Monster]
Synopsis: John Robinson and Don West are transported onto a strange new world where their evil opposites exist and plan to change places with them. Will, the Robot and a reluctant Dr. Smith set out to find and help the real Don and John.
Notes: This alternative universe adventure follows the episode Mirror, Mirror, broadcast two months earlier. The premise is very similar.

16. Target Earth

Airdate: January 3, 1968
Written by: Peter Packer
Directed by: Nathan Juran
Guest Cast:
Jim Gosa as Gilt Proto
[Thant Brann as Officer]
[Brent Davis as Mike Officer]
[Ralph Madlener as Proto #2]
[Jeffrey Trayler as Proto #3]
Synopsis: Landing on a planet some shapeless beings duplicate the Robinsons and take the Jupiter 2 with the intent of conquering Earth. It is up to Will and Dr. Smith to stop them.
Notes: This is the only episode where Will pilots the Jupiter 2 from one planet to another without help from his father or Major West. The episode title in the opening credits is an a different font than has been used in any previous episode.

17. Princess of Space

Airdate: January 10, 1968
Written by: Jackson Gillis
Directed by: Don Richardson
Guest Cast:
Robert Foulk as Kraspo
Arte Johnson as Fedor
Sheila Mathews as Aunt Gamma
Synopsis: The Robinsons descend on a large spaceship and its inhabitants think Penny is their missing Princess Alpha.
Notes: The computer tapes used to store Dr. Smith, Judy and Don are actually pieces of 35mm photographic film.

18. Time Merchant

Airdate: January 17, 1968
Written by: Bob & Wanda Duncan
Directed by: Ezra Stone
Guest Cast:
John Crawford as Dr. Chronos
Byron Morrow as General [Squires]
Hoke Howell as Sergeant [Rogers]
[Fred Krone as Chronos' Alien Assistant]
[Frank Parker as Security Guard]
Synopsis: After making a deal with the Time Merchant, Dr. Smith returns to Earth just before the launch of the Jupiter 2. Smith learns that if he doesn't get on the Jupiter 2, it will collide with an asteroid.
Notes: Dr. Chronos quotes Oliver Hardy's famous line: That's another fine mess you've gotten me in.

19. The Promised Planet

Airdate: January 24, 1968
Written by: Peter Packer
Directed by: Ezra Stone
Guest Cast:
Gil Rogers as Bartholomew
Keith Taylor as Edgar
Synopsis: The Robinson's believe they are landing on Alpha Centauri where they find a human base run by young people. When part of the adult Robinson's memories are erased, they are convinced that Penny and Will aren't their children and leave the planet.
Notes: The footage of the Jupiter 2 landing on a concrete landing pad is the same that has been used on several previous season three episodes.

20. Fugitives in Space

Airdate: January 31, 1968
Written by: Robert Hamner
Directed by: Ezra Stone
Guest Cast:
Michael Conrad as Creech
Tol Avery as Warden
Charles Horvath as Guard #1
[John Hunt as Monster #1]
[Ralph Madlener as Monster #2]
Synopsis: Dr. Smith is forced to help an escaped convict get away. When the warden arrives, Smith's lies and implicates Major West. They are both tried and sent to an intergalactic prison for life.
Notes: The ape-like prosthetic makeup used for Michael Conrad (as Creech) was created by famous Academy Award winning Hollywood makeup artist John Chambers. The latex mask used for Creech was an early prototype of what would later be used throughout the Planet of the Apes franchise through 1975.

21. Space Beauty

Airdate: February 14, 1968
Written by: Jackson Gillis
Directed by: Irving J. Moore
Guest Cast:
Leonard Stone as Farnum
Dee Hartford as Nancy [Pi Squared]
Miriam Schiller as Miss Teutonium
[Bart La Rue as Alien #2]
[Jim Mills as Alien #1]
Ronald Weber as Alien Dictator
Synopsis: Farnum, the intergalactic showman, again returns to the planet of the Robinsons. He has been hired by the leader of a strange civilization to organize the Galaxy Beauty Pageant and choose the princess of this intriguing world.
Notes: Actress Dee Hartford returns to play Nancy Pi Squared. Hartford had played the android Verda, in the 2 previous episodes The Android Machine and Revolt of the Androids. The giant lizard creature was Gundemar in The Questing Beast episode.

22. The Flaming Planet

Airdate: February 21, 1968
Written by: Barney Slater
Directed by: Don Richardson
Guest Cast:
Abraham Sofaer as Sobram
[John Hunt as Second Plant Monster]
[Paul Kessler as Second Plant Monster]
[Harry Monty as Little Plant Monster]
[Jeffrey Trayler as First Plant Monster]
Synopsis: Dr. Smith brought an alien plant into his cabin that continues to grow out of control. When the plant has grown to an intense size Smith attempts disposes of it outside the Jupiter 2 where it becomes attached to the ship's hull.
Notes: The name Sobram, given to the race of warriors who once dominated the planet, is derived from the name of guest star Abraham Sofaer.

23. The Great Vegetable Rebellion

Airdate: February 28, 1968
Written by: Peter Packer
Directed by: Don Richardson
Guest Cast:
Stanley Adams as Tybo
James Millhollin as Willoughby the Llama
[Jeffrey Trayler as Mulch Pit Monster]
Synopsis: Dr. Smith lands the pod on a planet where plants are the highest form of intelligence. The Robinsons land only to be captured by Tybo, a giant carrot. He plans to turn them into trees while Dr. Smith becomes a stalk of celery.
Notes: The script Malice in Wonderland was written as a sequel to this episode. Because the show was canceled, the sequel was never filmed, but the script has been adapted into a 3 comic series.

24. Junkyard in Space

Airdate: March 6, 1968
Written by: Barney Slater
Directed by: Ezra Stone
Guest Cast:
Marcel Hillaire as Junkman
Synopsis: The Jupitar 2 is forced to land on a planet that turns out to be a gigantic junkyard run by a robot who is continually trying to improve himself by using parts scavenged from discarded machinery. When the Robinson's food becomes contaminated, Dr. Smith starts trading the Robot's parts for food.
Notes: Marcel Hillaire (The Junkman) was in both the first and last episodes of the third and final season. The cancellation of the show left the Robinson family still Lost In Space.

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