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"Lost in Space" (1965) More at IMDbPro »

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Season: 1 | 2 | 3 | unknown
Year: 1965 | 1966 | 1967 | 1968 | unknown

Season 1

Season 1, Episode 1: The Reluctant Stowaway

Original Air Date—15 September 1965
Date: October 16, 1997 The Jupiter 2 is to launch, but a saboteur wants to destroy it. Unfortunatly he is part of the Jupiter 2 Crew now Lost In Space!

"Lost in Space" (1965): Season 1: Episode 2 -- Following a tense effort to rescue John Robinson from deep space, the Jupiter 2 is drawn inside a massive alien spaceship. There, the family confronts a strange race of bubble creatures.

Season 1, Episode 2: The Derelict

Original Air Date—22 September 1965
The Jupiter 2 is pulled into a giant ship occupied by bubble like creatures.

"Lost in Space" (1965): Season 1: Episode 3 -- The family crash-lands on an unknown planet in an attempt to rescue Professor Robinson. Maureen and the others use the chariot to man the search, only to face more havoc from Dr. Smith's diabolical schemes.

Season 1, Episode 3: Island in the Sky

Original Air Date—29 September 1965
While spacewalking Doctor Robinson is pulled down onto a planet. Major West lands the ship to search for him.

"Lost in Space" (1965): Season 1: Episode 4 -- The Robinsons set up camp on a planet populated by strangely evolving life forms. As the family moves their camp in search of warmth, they are confronted by a giant Cyclops.

Season 1, Episode 4: There Were Giants in the Earth

Original Air Date—6 October 1965
Due to the planet's orbit, the Robinsons are going to freeze to death unless they head south.

"Lost in Space" (1965): Season 1: Episode 5 -- Following a quick escape from an ancient city, the Robinsons must flee the heat of an unknown planet's sun. Heading through storms and earthquakes, they land safely--only to face an unknown entity from outer space.

Season 1, Episode 5: The Hungry Sea

Original Air Date—13 October 1965
After experiencing the extreme cold, the planet gets closer to the sun roasting it. Smith sends the robot to warn them.

"Lost in Space" (1965): Season 1: Episode 6 -- The Robinsons try to persuade a long-stranded astronaut, James Hapgood, to take Will and Penny back to Earth. He refuses, but has a change of heart after a near tragedy befalls Penny.

Season 1, Episode 6: Welcome Stranger

Original Air Date—20 October 1965
The Robinsons meet a fellow earth explorer who is also lost in space. They help him repair his ship and ask him to take Will and Penny home.

"Lost in Space" (1965): Season 1: Episode 7 -- Penny befriends a lonely echo voice she calls "Mr. Nobody." But when the girl appears to be injured, the being's wrath threatens the Robinsons-until Penny persuades it not to hurt her family.

Season 1, Episode 7: My Friend, Mr. Nobody

Original Air Date—27 October 1965
Feeling lonely and alienated from her family, Penny finds solace in her friendship with Mr. Nobody, a voice that lives in a cave near a spring. Mr. Nobody is in fact a bodiless life force who becomes fiercely protective of his human friend. Trouble arises when Smith discovers that the jacks that Mr. Nobody gave to Penny as playthings are diamonds.

"Lost in Space" (1965): Season 1: Episode 8 -- Glowing humanoids invade the Robinsons' colony in search of a brain to navigate their ship. Their plan is foiled when Will's worry over his parents' safety makes his brain unusable.

Season 1, Episode 8: Invaders from the Fifth Dimension

Original Air Date—3 November 1965
Macabre aliens -- quite literally talking heads -- need a humanoid brain to replace a worn out computer in their spaceship. They capture Smith, but quickly realize that his brain is unsatisfactory. The aliens release Smith so that he can bring them somebody more suitable: "a small Robinson."

"Lost in Space" (1965): Season 1: Episode 9 -- The Robinsons' water crisis deepens when Dr. Smith uses their only water supply for a shower. But a strange alien fruit may be the answer-until it causes Smith to grow to twice his normal size.

Season 1, Episode 9: The Oasis

Original Air Date—10 November 1965
Smith eats some fruit that turns him into a paranoid giant.

"Lost in Space" (1965): Season 1: Episode 10 -- The Robinsons confront their mistrust of an alien family that has beamed in from space. Unable to understand their language, they fear for Will's safety when he and the little alien boy disappear.

Season 1, Episode 10: The Sky Is Falling

Original Air Date—17 November 1965
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 Smith insists that they are the vanguard of an invading army.

"Lost in Space" (1965): Season 1: Episode 11 -- When Dr. Smith and Will discover a magic wish-granting machine, the family becomes intoxicated with greed. But the party ends when a strange alien creature reclaims the magic machine.

Season 1, Episode 11: Wish Upon a Star

Original Air Date—24 November 1965
Dr. Smith goes into voluntary exile after John confronts him when his laziness and carelessness threaten the group's survival. With Will's assistance, Smith makes a home in the wreck of an alien spaceship. In it, they find a small alien machine that materializes the operator's wishes.

"Lost in Space" (1965): Season 1: Episode 12 -- Will comes up with an idea for a two-man ship that can travel to Earth. But when Dr. Smith hijacks the ship, a crash landing finds Will and Smith trapped in a jungle, pursued by a bush creature.

Season 1, Episode 12: The Raft

Original Air Date—1 December 1965
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, but they cannot stabilize the output. Deciding to build a smaller, 2-man craft, they pull the reactor chamber out and use Will's experiments to construct a "space raft".

"Lost in Space" (1965): Season 1: Episode 13 -- A friendly little dog survives the crash of a space capsule and leads Professor Robinson and Don West to Judy, just in time to save her from the claws of a giant hairy mutant.

Season 1, Episode 13: One of Our Dogs Is Missing

Original Air Date—8 December 1965
With the men off on a mission, the Robinson women must deal with an alien intruder.

"Lost in Space" (1965): Season 1: Episode 14 -- The family is threatened by a giant cyclamen plant that can create realistic duplicates of anything it absorbs. Soon the plant feeds on the Jupiter 2's fuel supply and then makes an evil version of Judy Robinson.

Season 1, Episode 14: Attack of the Monster Plants

Original Air Date—15 December 1965
As the Robinsons accumulate the last amounts of fuel needed for lift off, 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 the doctor discovers that the peculiar reproductive habits of alien cyclamen plants might give him the upper hand.

"Lost in Space" (1965): Season 1: Episode 15 -- Will discovers a matter-transfer portal that returns him to Earth, but once there, the residents of a small town in Vermont have a hard time believing his stories of life in space.

Season 1, Episode 15: Return from Outer Space

Original Air Date—29 December 1965
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 considered the fantasies of a runaway boy.

"Lost in Space" (1965): Season 1: Episode 16 -- The family comes upon an evil alien zookeeper, whose trance-like powers can entice exotic animals-and young humans like Will and Penny-to follow him into captivity.

Season 1, Episode 16: The Keeper: Part 1

Original Air Date—12 January 1966
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 -- to add a pair of humans to his incredible menagerie.

The Keeper, Part 2: Season 1: Episode 17 -- Chaos reigns as the Keeper's creatures, let loose by the robot and Dr. Smith, overrun the planet. The Keeper refuses to stop the heinous animals unless the family gives him Penny and Will.

Season 1, Episode 17: The Keeper: Part 2

Original Air Date—19 January 1966
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 Penny and Will.

"Lost in Space" (1965): Season 1: Episode 18 -- The Robinsons find new hope when they meet a marooned pirate with an interstellar vehicle capable of returning to Earth. But their plans are foiled when a slithering mass pursues the pirate in search of a stolen object.

Season 1, Episode 18: The Sky Pirate

Original Air Date—26 January 1966
Will becomes fast friends with Captain Alonzo P. Tucker, an Earthling who escaped his alien captors to become a wandering space buccaneer. But Tucker's roguish charm hides a secret that could destroy them all.

"Lost in Space" (1965): Season 1: Episode 19 -- A strange, ghost-like presence appears after an explosion in a bog awakens it. Dr. Smith conducts a séance, certain the rampaging ghost is his dead uncle's spirit.

Season 1, Episode 19: Ghost in Space

Original Air Date—2 February 1966
Trying to contact his Uncle Taddeus during a séance Doctor Smith summons a ghostly monster native to the planet.

"Lost in Space" (1965): Season 1: Episode 20 -- The family's robot is seemingly replaced when Will repairs a robotoid from an advanced civilization - until the new machine wreaks havoc by trying to take over the ship.

Season 1, Episode 20: War of the Robots

Original Air Date—9 February 1966
After repairing a damaged robot, it first helps the Robinsons and then plots to capture them.

"Lost in Space" (1965): Season 1: Episode 21 -- Frustrated with impending adolescence, Penny falls into a mirror and enters a strange new dimension. There she befriends a lonely alien boy who tells her she can never leave Mirrorland - but she'll never have to grow up.

Season 1, Episode 21: The Magic Mirror

Original Air Date—16 February 1966
Judy and Penny stumble into an alien mirror and find a universe occupied by one very lonely boy.

"Lost in Space" (1965): Season 1: Episode 22 -- A tough little alien boy and his father attempt to prove their superiority to humans by challenging John and Will Robinson to a test of strength and bravery.

Season 1, Episode 22: The Challenge

Original Air Date—2 March 1966
John and Will fight a battle with an alien father and son that is to the death.

"Lost in Space" (1965): Season 1: Episode 23 -- Dr. Smith makes a hard bargain when his dealings with a space trader go awry, and he finds himself in an intergalactic contract he's unable to break.

Season 1, Episode 23: The Space Trader

Original Air Date—9 March 1966
After ruining the Robinson's food supply, Doctor Smith makes a deal with the space trader and gives his body for food provided he collects it in 200 years. The space trader comes to collect immediately.

"Lost in Space" (1965): Season 1: Episode 24 -- Dr. Smith lobbies to become king of a luxurious planet named Andronica, only to discover he's to be used as a human sacrifice.

Season 1, Episode 24: His Majesty Smith

Original Air Date—16 March 1966
Doctor Smith delights that he is made ruler of an alien species until he learns that he is also their sacrifice.

"Lost in Space" (1965): Season 1: Episode 25 -- An oddball family of alien hillbillies ensnares the Robinsons. Their daughter tries to romance Don while their pet werewolf and fast-growing, man-eating plants spell trouble.

Season 1, Episode 25: The Space Croppers

Original Air Date—30 March 1966
The Robinsons run into a group of space hillbillies who might help get them home.

"Lost in Space" (1965): Season 1: Episode 26 -- Dr. Smith discovers the dark side of greed when he steals a magic disc that turns everything he touches - even Penny - into platinum.

Season 1, Episode 26: All That Glitters

Original Air Date—6 April 1966
Dr. Smith and Penny obtain a ring that will turn anything to platinum including Penny.

"Lost in Space" (1965): Season 1: Episode 27 -- John, Don and Will discover an underground world of soldiers frozen in suspended animation, waiting for their princess to be awakened by a kiss - so they can take over the universe.

Season 1, Episode 27: The Lost Civilization

Original Air Date—13 April 1966
Will awakes a sleeping princess whom he now must marry. Her race has been awakened and now plans to conquer the universe starting with earth.

"Lost in Space" (1965): Season 1: Episode 28 -- Will comes upon an alien spaceship that takes him to the Sixth dimension, transforming him into a boy genius. Jealous Dr. Smith uses the ship as well, with very different results.

Season 1, Episode 28: A Change of Space

Original Air Date—20 April 1966
A strange interdimsensional ship turns Will into a genius and Doctor Smith into an old man.

"Lost in Space" (1965): Season 1: Episode 29 -- The mind and soul of Professor John Robinson is overtaken by an unseen alien spirit, forcing Robinson to turn against the family as he tries to take over the ship.

Season 1, Episode 29: Follow the Leader

Original Air Date—27 April 1966
An evil spirit possesses John Robinson who plans to fly the Jupiter 2 back to his home world even at the expense of Will's life.

Season 2

Season 2, Episode 1: Blast Off Into Space

Original Air Date—14 September 1966
A space miner is blasting the planet apart and the Robinsons have to leave even though Smith wants to stay and become rich.

"Lost in Space" (1965): Season 2: Episode 2 -- John Robinson saves the day when Dr. Smith inadvertently sets the Jupiter 2 on a direct course towards the sun -- but not before Smith can be enticed by a seductive interstellar Lorelei.

Season 2, Episode 2: Wild Adventure

Original Air Date—21 September 1966
Smith finds the course back to earth, but a space female lures Smith out of the ship and saving him again leaves the crew of the Jupiter 2 lost in space.

"Lost in Space" (1965): Season 2: Episode 3 -- The Jupiter 2 lands on a planet Dr. Smith mistakenly believes is Earth. When Smith is lured out of the ship by cyborgs masquerading as earthlings, the Robot saves him--and the family--in the nick of time.

Season 2, Episode 3: The Ghost Planet

Original Air Date—28 September 1966
Smith makes the Jupiter 2 land on a planet occupied by cyborgs.

"Lost in Space" (1965): Season 2: Episode 4 -- After the ship makes a forced landing, Smith meets an alien (Wally Cox) and guzzles an explosive liquid.

Season 2, Episode 4: The Forbidden World

Original Air Date—5 October 1966
On their next planetary stop the Robinsons encounter a hermit that plans to attack the Jupiter 2 with his army.

"Lost in Space" (1965): Season 2: Episode 5 -- The ringmaster (James Westerfield) of a space circus asks Will and Smith to join his troupe.

Season 2, Episode 5: Space Circus

Original Air Date—12 October 1966
A space circus comes to town and the owner wants Will to runaway with it.

"Lost in Space" (1965): Season 2: Episode 6 -- A galactic tribunal tries the Robinson party for space crimes.

Season 2, Episode 6: The Prisoners of Space

Original Air Date—19 October 1966
The Robinsons are tried for space crimes and the evidence shows that Smith is really responsible for the mishaps.

"Lost in Space" (1965): Season 2: Episode 7 -- A female android, capable of human emotions, joins the Jupiter 2 -- only to be rejected by Smith and the Robot because of her superior intelligence.

Season 2, Episode 7: The Android Machine

Original Air Date—26 October 1966
Doctor Smith creates an android that they teach to be more human. A humanoid shows up looking for payment for the android.

"Lost in Space" (1965): Season 2: Episode 8 -- John Robinson is coaxed into an intergalactic wrestling match by a giant alien fight promoter -- only to learn that Earth's safety hangs in the balance.

Season 2, Episode 8: The Deadly Games of Gamma 6

Original Air Date—2 November 1966
Dr. Smith ends up in a boxing match with some space gladiators. If he wins he will return to earth and if he loses it won't matter because earth won't be there.

"Lost in Space" (1965): Season 2: Episode 9 -- With a magical ruby ring, and a little help from Penny and Dr. Smith, Will Robinson helps a futuristic Arab Chieftain find his long-lost, but much-changed, princess.

Season 2, Episode 9: The Thief from Outer Space

Original Air Date—9 November 1966
Will, Penny and Dr. Smith get involved with a thief that is searching for a princess.

"Lost in Space" (1965): Season 2: Episode 10 -- Dr. Smith's cousin Jeremiah drops in by parachute and attempts to rob Smith of their aunt's inheritance-- which they almost lose by betting against a robot gambling machine.

Season 2, Episode 10: Curse of Cousin Smith

Original Air Date—16 November 1966
Jeremiah Smith shows up to kill Doctor Smith for his inheritance.

"Lost in Space" (1965): Season 2: Episode 11 -- Chaos ensues on a Western-style planet when Dr. Smith is mistaken for a notorious intergalactic gunslinger named Zeno'at the same time Zeno is hiding out with the Robinsons, disguised as Dr. Smith.

Season 2, Episode 11: West of Mars

Original Air Date—30 November 1966
Zeno an intergalactic gun fighter is Doctor Smith's double ganger and he switches places with Smith. Smith confesses to Zeno's crimes out of fear.

"Lost in Space" (1965): Season 2: Episode 12 -- A magical lyre sends Dr. Smith to a Hades-like prison filled with smoke and fire. Meanwhile, a Mephistophelean political rebel escapes the prison and lands on the Jupiter 2, where romances the frustrated Judy.

Season 2, Episode 12: A Visit to Hades

Original Air Date—7 December 1966
An alien harp is found that is a gateway to planet than resembles hell.

"Lost in Space" (1965): Season 2: Episode 13 -- Aliens plan to use the Robot as a blueprint for a device to control machinery.

Season 2, Episode 13: The Wreck of the Robot

Original Air Date—14 December 1966
The robot is stolen to create more robots so they can conquer the earth.

"Lost in Space" (1965): Season 2: Episode 14 -- A scientist drains the Robinsons' human qualities to pass on to an android.

Season 2, Episode 14: The Dream Monster

Original Air Date—21 December 1966
Doctor Smith agrees to give away the emotions of the Robinsons to an alien looking for some in exchange for a trip home.

"Lost in Space" (1965): Season 2: Episode 15 -- Penny befriends a frog-like alien involved in a war with a leader of another civilization.

Season 2, Episode 15: The Golden Man

Original Air Date—28 December 1966
The Robinsons come between a race of gold men and a race of green men who are at war. Penny meets the green alien and befriends him.

"Lost in Space" (1965): Season 2: Episode 16 -- The green alien who once hypnotized Smith returns and shows him bits of the future.

Season 2, Episode 16: The Girl from the Green Dimension

Original Air Date—4 January 1967
The same woman who lured Smith into space returns still in love with Smith. He agrees to return to her dimension and Will gets turned green.

"Lost in Space" (1965): Season 2: Episode 17 -- Penny meets a scaly female beast chased by a bumbling knight (Hans Conried).

Season 2, Episode 17: The Questing Beast

Original Air Date—11 January 1967
A space knight is following the questing beast who Penny becomes friends with.

"Lost in Space" (1965): Season 2: Episode 18 -- Will and Smith enter a strange vending machine and wind up in a toy factory run by an eccentric.

Season 2, Episode 18: The Toymaker

Original Air Date—25 January 1967
Smith and Will find a toymaker's world inside an alien merchandise ordering machine.

"Lost in Space" (1965): Season 2: Episode 19 -- Dr. Smith and the Robot discover an abandoned alien spacecraft which Smith hopes might provide a getaway to Earth. Instead, they are captured by an outlaw spaceship Admiral named Zahrk.

Season 2, Episode 19: Mutiny in Space

Original Air Date—1 February 1967
A space pirate looking for his crew that mutinied find Will and Dr. Smith trying to repair his empty ship.

"Lost in Space" (1965): Season 2: Episode 20 -- Dr. Smith and Will have a mythological adventure as they take on the ancient God Thor and travel on a winged horse to Valhalla.

Season 2, Episode 20: The Space Vikings

Original Air Date—8 February 1967
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 Thor.

"Lost in Space" (1965): Season 2: Episode 21 -- Dr. Smith takes a job as an alien magician's assistant, in hopes of returning to Earth. But the plan backfires when Will and Smith are fired on by Earth Space Control and forced to return to deep space.

Season 2, Episode 21: Rocket to Earth

Original Air Date—15 February 1967
A space wizard conjures up a spaceship so that Doctor Smith can return to earth.

"Lost in Space" (1965): Season 2: Episode 22 -- Smith's fascination with a computer in a cave endangers the Robinsons' escape plan to Alpha Centauri.

Season 2, Episode 22: Cave of the Wizards

Original Air Date—22 February 1967
Just hours before the Jupiter 2 is to lift off to take advantage of a rare launch window, Dr. Smith discovers a cave inhabited by three devices -- part beings, part machines -- that are the last living remnants of the once mighty civilization of Draconis. As T minus zero draws near, Dr. Smith increasingly falls under the influence of the Draconians.

"Lost in Space" (1965): Season 2: Episode 23 -- The discovery of a talking head leads Will, Penny, Dr. Smith and the Robot on a strange search for a lost pirate's treasure.

Season 2, Episode 23: Treasure of the Lost Planet

Original Air Date—1 March 1967
Will is reunited with his friend Captain Tucker in this sequel to "The Sky Pirate." Tucker and his very motley crew -- lizardman Deek, hairy humanoid Smeek, and bipedal bison Izralim -- are searcing for a legendary lost treasure. The key to finding the booty might be a disembodied talking head in a box that is harrying Dr. Smith.

"Lost in Space" (1965): Season 2: Episode 24 -- In another foiled get-rich-quick scheme, Smith becomes involved with a ruby-devouring android named Idak. But when a more powerful android appears, Idak experiences human feelings and he conquers the monster to save a female android's life.

Season 2, Episode 24: Revolt of the Androids

Original Air Date—8 March 1967
In the second of two sequels to "The Android Machine," Verda is sheltered by the Robinsons after she is marked for destruction by the Celestrial Department Store. To that end, the store has dispatched a killer android named IDAK (Instant Destroyer And Killer) Alpha 12.

"Lost in Space" (1965): Season 2: Episode 25 -- An ear-shattering noise leads the Robinsons to a showdown with a statuesque Amazon warrior named Niolani, who plans to rule and colonize a planet by enslaving all the men.

Season 2, Episode 25: The Colonists

Original Air Date—15 March 1967
A female alien meets the Robinsons and use them to help erect an arch to bring her people to colonized their planet.

"Lost in Space" (1965): Season 2: Episode 26 -- The Robot grows to enormous proportions when his ionic processes are reversed, leading Dr. Smith and Will on a fantastic journey to restore him to his usual size -- before he is destroyed!

Season 2, Episode 26: Trip Through the Robot

Original Air Date—22 March 1967
The robot is running out of power and goes to a strange valley to die and then grows to the size of a city block. Will enters the robot to help him.

"Lost in Space" (1965): Season 2: Episode 27 -- A scientist makes android copies of Smith, Don and the girls, then orders Will to teach them how to behave.

Season 2, Episode 27: The Phantom Family

Original Air Date—29 March 1967
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.

"Lost in Space" (1965): Season 2: Episode 28 -- A band of tiny robots -- who worship the Robinson's Robot as their leader -- surrounds Dr. Smith and forces Smith and the Robot to switch personalities.

Season 2, Episode 28: The Mechanical Men

Original Air Date—5 April 1967
The planet is invaded by an army of tiny robots who closely resemble the Robinson's robot and acclaim 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.

"Lost in Space" (1965): Season 2: Episode 29 -- Driven into a cave by an electrical storm, Will stumbles into a space-warp that takes him back in time through an astral space tunnel, landing him in a haunted Scottish castle.

Season 2, Episode 29: The Astral Traveller

Original Air Date—12 April 1967
Will and Dr. Smith find a cave that transports them to earth, 19th century Scotland.

"Lost in Space" (1965): Season 2: Episode 30 -- Penny becomes embroiled in a war between two alien factions when she takes possession of the powerful magic amulet both sides are fighting for.

Season 2, Episode 30: The Galaxy Gift

Original Air Date—26 April 1967
Penny will not give up the belt entrusted to her by an alien even if it means their deaths.

Season 3

Season 3, Episode 1: Condemned of Space

Original Air Date—6 September 1967
The Robinsons leave their planet to escape a collision with a comet and find a ship full of frozen convicts.

"Lost in Space" (1965): Season 3: Episode 2 -- Caught in a “time warp,” the Jupiter 2 crew discover not only that they can now return to Earth, but it’s suddenly 1947!

Season 3, Episode 2: Visit to a Hostile Planet

Original Air Date—13 September 1967
Passing through a time warp, the Robinsons do return to Earth in the year 1947. They are mistaken as invaders and start the UFO scare of the 1940's.

Season 3, Episode 3: Kidnapped in Space

Original Air Date—20 September 1967
A spaceship requests medical help for their computer and Dr. Smith has to perform brain surgery on it.

"Lost in Space" (1965): Season 3: Episode 4 -- After he and the Robot are attacked by a hairy mutant, John Robinson whips out his laser pistol and destroys the homely beast.

Season 3, Episode 4: Hunter's Moon

Original Air Date—27 September 1967
After killing a hostile alien, Professor Robinson comes across a "hunter" and he must replace his dead prey.

"Lost in Space" (1965): Season 3: Episode 5 -- After trying to seal a menacing volcano so that the Jupiter 2 can take off, Don West and Dr. Smith are captured by cavemen.

Season 3, Episode 5: The Space Primevals

Original Air Date—4 October 1967
On a planet where a primitive people are ruled by a computer, Doctor Smith goes against character and saves Major West's life.

"Lost in Space" (1965): Season 3: Episode 6 -- While exploring a cave with the Robot, Smith hits buttons on a control panel he discovers, thereby activating a cyborg-creating device.

Season 3, Episode 6: The Space Destructors

Original Air Date—11 October 1967
Using an alien machine Doctor Smith creates an army of cyborgs to conquer the universe.

"Lost in Space" (1965): Season 3: Episode 7 -- The Robinsons give refuge aboard the Jupiter 2 to a lost alien boy named J-5 and agree to take him home.

Season 3, Episode 7: The Haunted Lighthouse

Original Air Date—18 October 1967
The Robinsons take a boy home to his planet and come across a spaceship that is a space lighthouse. The boy gets angry when they tell him they don't have enough fuel to get him home.

"Lost in Space" (1965): Season 3: Episode 8 -- While in the Space Pod, the bumbling Dr. Smith accidentally launches himself, Will and the Robot to a nearby planet.

Season 3, Episode 8: Flight Into the Future

Original Air Date—25 October 1967
Accidently landing on a planet, Will, Doctor Smith and the robot find the Jupiter 2 is now an archaeological site and that they are in the future.

"Lost in Space" (1965): Season 3: Episode 9 -- A group of space hippies seek to destroy the Robinsons’ planet!

Season 3, Episode 9: Collision of the Planets

Original Air Date—8 November 1967
A group of space hippies are going to destroy the planet the Robinsons are on.

"Lost in Space" (1965): Season 3: Episode 10 -- As if Dr. Smith isn’t odd enough to begin with, an unusual creature takes over his personality.

Season 3, Episode 10: The Space Creature

Original Air Date—15 November 1967
When a gaseous creature engulfs the Jupiter 2, the other crew members disappear leaving Will and Doctor Smith alone.

"Lost in Space" (1965): Season 3: Episode 11 -- In order to make repairs to the Jupiter 2, the Robinsons land on a planet where the Robot discovers a female robot.

Season 3, Episode 11: Deadliest of the Species

Original Air Date—22 November 1967
The robot falls in 'love' with an evil female robot sought by two aliens.

"Lost in Space" (1965): Season 3: Episode 12 -- Penny is captured and taken to an intergalactic zoo, where she is expected to be part of a show, along with the rest of her family.

Season 3, Episode 12: A Day at the Zoo

Original Air Date—29 November 1967
Galaxic showman Farnum B. wants to exhibit the Robinsons in his zoo.

"Lost in Space" (1965): Season 3: Episode 13 -- Two clever alien bank robbers transform themselves into Earthlings.

Season 3, Episode 13: Two Weeks in Space

Original Air Date—13 December 1967
Two escaped thieves transform themselves into humans and pretend to be tourists as Smith turns the Jupiter 2 into a hotel.

"Lost in Space" (1965): Season 3: Episode 14 -- The Robinsons take in a princess who is being sought by a bounty hunter.

Season 3, Episode 14: Castles in Space

Original Air Date—20 December 1967
Will meets a princess who is escaping two bounty hunters and Will gets kidnapped instead.

"Lost in Space" (1965): Season 3: Episode 15 -- John Robinson is accidentally transported to an anti-matter world, where he is held captive by an evil replica of Don.

Season 3, Episode 15: The Antimatter Man

Original Air Date—27 December 1967
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 only to be pursued by a evil John Robinson.

"Lost in Space" (1965): Season 3: Episode 16 -- The never-helpful Dr. Smith accidentally launches the Space Pod into space while the lower half of the Robot is on board!

Season 3, Episode 16: Target: Earth

Original Air Date—3 January 1968
Landing on a planet some shapeless beings duplicate the Robinsons and take the Jupiter 2 with the intent of conquering Earth. Will gets aboard to stop them.

"Lost in Space" (1965): Season 3: Episode 17 -- After searching for the long-lost Princess Alpha of Beta-Three, Captain Kraspo believes Penny may actually be the princess.

Season 3, Episode 17: Princess of Space

Original Air Date—10 January 1968
Penny is kidnapped by aliens who think that she is the missing Princess Alpha.

"Lost in Space" (1965): Season 3: Episode 18 -- The Robinsons accidentally interrupt the voyage of a time traveler, Chronos, and then, as always, Dr. Smith manages to upset him further.

Season 3, Episode 18: The Time Merchant

Original Air Date—17 January 1968
After making a deal with the Time Merchant, Dr. Smith returns to earth just before the launch of the Jupiter II. If he doesn't get on it the Jupiter II will crash into an asteroid.

"Lost in Space" (1965): Season 3: Episode 19 -- Once welcomed to do so, the Jupiter 2 arrives on a planet inside the Alpha Centauri solar system.

Season 3, Episode 19: The Promised Planet

Original Air Date—24 January 1968
When the Robinsons nearly reach Alpha Centauri, they find a human base run by young people. They convince the adults that Penny and Will aren't their children and they leave in the Jupiter 2.

"Lost in Space" (1965): Season 3: Episode 20 -- An alien prison escapee manages to exchange his prison jacket for Dr. Smith’s parka.

Season 3, Episode 20: Fugitives in Space

Original Air Date—31 January 1968
Don and Doctor Smith are sent to an intergalactic prison after coming across an escapee.

"Lost in Space" (1965): Season 3: Episode 21 -- When Farnum B., Showman of the Cosmos, crash-lands on the Robinson’s current planet, he immediately tries to recruit Judy for his Miss Galaxy Beauty Pageant.

Season 3, Episode 21: Space Beauty

Original Air Date—14 February 1968
Farnum B the intergalactic showman again encounters the Robinsons as he presents the Galaxy Beauty Pageant that Judy enters.

"Lost in Space" (1965): Season 3: Episode 22 -- A plant that thinks Dr. Smith is its mother attaches itself to the Jupiter 2.

Season 3, Episode 22: The Flaming Planet

Original Air Date—21 February 1968
Doctor Smith disposes of a plant that grows to a gargantuan size and becomes attached to the Jupiter 2.

"Lost in Space" (1965): Season 3: Episode 23 -- Dr. Smith picks a flower and is immediately accused of murder by a giant talking carrot, who says that he must now die!

Season 3, Episode 23: The Great Vegetable Rebellion

Original Air Date—28 February 1968
Smith lands the pod on a planet where plants are the highest form of intelligence next to the writer of this episode. The Robinsons lands only to be captured by Tybo a giant carrot. He plans to turn them into trees while Dr. Smith becomes a stalk of celery.

"Lost in Space" (1965): Season 3: Episode 24 -- While on a junkyard planet, Dr. Smith realizes the crew’s food supply is dwindling.

Season 3, Episode 24: Junkyard of Space

Original Air Date—6 March 1968
With the Robinsons running out of food, Dr. Smith trades the ship and the robot to a junk man for food.

Unknown Season

"Lost in Space" (1965): Season 1: -- The Robinson family (without the later-to-be-added Robot B-9 and Dr. Smith characters) rockets into outer space, only to crash-land onto a desert planet.

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Original Air Date—????
The original pilot episode, which never aired, did not feature either the robot or Dr. Smith (who was added later by 20th Century Fox as an antagonist). Much of the original footage was re-used in the first four televised episodes.

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