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Irwin Allen's Lost in Space - Episode Guide

Season 1

The Reluctant Stowaway

Episode: 1x01 | Airdate: Sep 15, 1965

The Reluctant Stowaway

As the Jupiter 2 prepares to launch, Colonel Dr. Smith comes on board and ends up being trapped onboard during blastoff. Because of him being there, the Jupiter 2 careens off course and becomes  lost in space.

The Derelict

Episode: 1x02 | Airdate: Sep 22, 1965

The Derelict

The Jupiter 2 is pulled into a giant ship occupied by bubble-like creatures.

Island in the Sky

Episode: 1x03 | Airdate: Sep 29, 1965

Island in the Sky

While spacewalking Doctor Robinson is pulled down onto a planet. Major West lands the ship to search for him.

There Were Giants in the Earth

Episode: 1x04 | Airdate: Oct 6, 1965

There Were Giants in the Earth

Due to the planet's orbit, the Robinsons are going to freeze to death unless they head south.

The Hungry Sea

Episode: 1x05 | Airdate: Oct 13, 1965

The Hungry Sea

After experiencing the extreme cold, the planet gets closer to the sun, roasting it. Smith sends the robot to warn the Robinsons.

Welcome Stranger

Episode: 1x06 | Airdate: Oct 20, 1965

Welcome Stranger

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.

My Friend, Mr. Nobody

Episode: 1x07 | Airdate: Oct 27, 1965

My Friend, Mr. Nobody

Penny strikes up a friendship with a deep voice in a deep cave.

Invaders from the Fifth Dimension

Episode: 1x08 | Airdate: Nov 3, 1965

Invaders from the Fifth Dimension

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."

The Oasis

Episode: 1x09 | Airdate: Nov 10, 1965

The Oasis

The Robinsons face dangers on strange terrain, where water is running low and the heat is getting more intense.

The Sky is Falling

Episode: 1x10 | Airdate: Nov 17, 1965

The Sky is Falling

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.

Wish Upon a Star

Episode: 1x11 | Airdate: Nov 24, 1965

Wish Upon a Star

Will and Dr. Smith come upon an alien machine that grants wishes, which tests the values of the Robinson group.

The Raft

Episode: 1x12 | Airdate: Dec 1, 1965

The Raft

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."

One of Our Dogs is Missing

Episode: 1x13 | Airdate: Dec 8, 1965

One of Our Dogs is Missing

With the men off on a mission, the Robinson women must deal with an alien intruder.

Attack of the Monster Plants

Episode: 1x14 | Airdate: Dec 15, 1965

Attack of the Monster Plants

Banished from camp for his latest endangering behavior, Dr. Smith discovers alien plants that can duplicate things (including people), which he uses to his advantage.

Return from Outer Space

Episode: 1x15 | Airdate: Dec 29, 1965

Return from Outer Space

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.

The Keeper (1)

Episode: 1x16 | Airdate: Jan 12, 1966

The Keeper (1)

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 (2)

Episode: 1x17 | Airdate: Jan 19, 1966

The Keeper (2)

Troubles with The Keeper would be over if Dr. Smith hadn't skulked aboard his ship and released all the animals, putting The Keeper in a position to blackmail the Robinsons for their children

The Sky Pirate

Episode: 1x18 | Airdate: Jan 26, 1966

The Sky Pirate

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.

Ghost in Space

Episode: 1x19 | Airdate: Feb 2, 1966

Ghost in Space

Trying to contact his Uncle Thaddeus during a séance, Doctor Smith summons a ghostly monster native to the planet.

War of the Robots

Episode: 1x20 | Airdate: Feb 9, 1966

War of the Robots

After the Robinsons repair a damaged robot, it first helps them and then plots to capture them.

The Magic Mirror

Episode: 1x21 | Airdate: Feb 16, 1966

The Magic Mirror

During a cosmic storm, Dr. Smith and Penny discover a strange mirror. Dr. Smith becomes interested in the mirror because it has platinum in it. Meanwhile Penny gets very emotional and wants to stay the way she is when Judy tells her she should dress feminine once in a while. Later Debbie the Bloop is followed into the strange mirror where a pocket universe with a odd boy is discovered.

The Challenge

Episode: 1x22 | Airdate: Mar 2, 1966

The Challenge

John and Will fight a battle with an alien father and son that is to the death.

The Space Trader

Episode: 1x23 | Airdate: Mar 9, 1966

The Space Trader

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.

His Majesty Smith

Episode: 1x24 | Airdate: Mar 16, 1966

His Majesty Smith

Doctor Smith delights that he is made ruler of an alien species until he learns that he is also their sacrifice.

The Space Croppers

Episode: 1x25 | Airdate: Mar 30, 1966

The Space Croppers

The Robinsons run into a group of space hillbillies whom Zachary believes might take him back to Earth.

All That Glitters

Episode: 1x26 | Airdate: Apr 6, 1966

All That Glitters

Dr. Smith and Penny obtain a ring that will turn anything to platinum.

The Lost Civilization

Episode: 1x27 | Airdate: Apr 13, 1966

The Lost Civilization

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.

A Change of Space

Episode: 1x28 | Airdate: Apr 20, 1966

A Change of Space

A strange interdimensional ship turns Will into a genius and Dr. Smith into an old man.

Follow the Leader

Episode: 1x29 | Airdate: Apr 27, 1966

Follow the Leader

An evil spirit possesses John Robinson and plans to fly the Jupiter 2 back to his home world, even at the expense of Will's life.

Season 2

Blast Off Into Space

Episode: 2x01 | Airdate: Sep 14, 1966

Blast Off Into Space

Dr Smith and Will befriend an old miner named Nerim. After a series of earthquakes indicates that the planet is breaking up, Dr Smith tries to convince them that it is merely the effects of mining, and no harm will come to the planet. John informs him that he is wrong and that the Robinson family will be departing within the day. It is a race against time to escape the crumbling planet.

Wild Adventure

Episode: 2x02 | Airdate: Sep 21, 1966

Wild Adventure

Shortly after leaving their original crash-site planet, Smith spots a familiar star and, in an amazing show of stellar navigational skill, calculates the course to get back to Earth. He extracts a promise from Don and John that they'll return to Earth, or else he'll destroy his navigation data. They agree, but inform the family at dinnertime that they are headed for Alpha Centauri after all, mainly because the Earth is on the other side of the Sun (how do they know that? - do they know the date? And besides, from Alpha Centauri, Earth revolves clockwise, visible all the time). Smith changes course 180 degrees, then clumsily jettisons most of the fuel. They reach a refueling barge, one of several that Alpha Control put out in 1996, top up the tanks, and resume course for Alpha Centauri, not knowing that they've picked up a tailgater who follows them after Smith reverses course to Earth again. The alarm goes off in the night, and they expend a lot of fuel pulling away from the Earth's

The Ghost Planet

Episode: 2x03 | Airdate: Sep 28, 1966

The Ghost Planet

Due to Smith's actions the crew has had to land their ship on an alien planet which is run by cyborgs. Meanwhile the crew try to break free from the captors who promise them power and luxury and they have to save their robot who was crippled by a ray gun.

Forbidden World

Episode: 2x04 | Airdate: Oct 5, 1966

Forbidden World

The Robinsons encounter a hermit who plans to attack the Jupiter 2 with his army.

Space Circus

Episode: 2x05 | Airdate: Oct 12, 1966

Space Circus

A space circus comes to town and the owner wants Will to run away with it.

The Prisoners of Space

Episode: 2x06 | Airdate: Oct 19, 1966

The Prisoners of Space

The Robinsons are tried for space crimes and the evidence shows that Smith is really responsible for the mishaps.

The Android Machine

Episode: 2x07 | Airdate: Oct 26, 1966

The Android Machine

Doctor Smith creates an android that they teach to be more human. A humanoid shows up looking for payment for the android.

The Deadly Games of Gamma 6

Episode: 2x08 | Airdate: Nov 2, 1966

The Deadly Games of Gamma 6

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.

The Thief of Outer Space

Episode: 2x09 | Airdate: Nov 9, 1966

The Thief of Outer Space

Will, Penny and Dr. Smith get involved with a thief that is searching for a princess

Curse of Cousin Smith

Episode: 2x10 | Airdate: Nov 16, 1966

Curse of Cousin Smith

Jeremiah Smith shows up to kill Doctor Smith for his inheritance.

West of Mars

Episode: 2x11 | Airdate: Nov 30, 1966

West of Mars

Will and Doctor Smith are out and about and a swift gun named Xeno who is on the run from the law and happens to be a exact double for Dr. Smith trades places with him allowing the real Dr. Smith to be arrested in his place.

A Visit to Hades

Episode: 2x12 | Airdate: Dec 7, 1966

A Visit to Hades

Doctor Smith while out with Will discovers a golden Lyre on a pedestal in a stone arch. He strums it and is sent to what appears to be Hell.

Wreck of the Robot

Episode: 2x13 | Airdate: Dec 14, 1966

Wreck of the Robot

The mysterious Saticon's make a offer to the Robinsons to buy the robot. The offer is turned down and then in the middle of the night the robot disappears. Later it is discovered that the Saticon's are more than they seem.

The Dream Monster

Episode: 2x14 | Airdate: Dec 21, 1966

The Dream Monster

Sesmar cons Doctor Smith into using a special camera to take pictures of the Robinsons. They're personalities are then stolen from them for use in a Frankenstein type android that Sesmar is in the process of creating.

The Golden Man

Episode: 2x15 | Airdate: Dec 28, 1966

The Golden Man

Beauty meets the beast, two aliens fighting a war land on the planet and the Robinsons are stuck in the middle of things. Handsome golden man Keema and the frog faced alien have the Robinson's choosing sides, will it be the right one?

The Girl from the Green Dimension

Episode: 2x16 | Airdate: Jan 4, 1967

The Girl from the Green Dimension

Athena, the green girl from "Wild Adventure" who lured Doctor Smith out into space, returns and is still in love with him. Her suitor from the Green dimension follows her and turns Will green.

The Questing Beast

Episode: 2x17 | Airdate: Jan 11, 1967

The Questing Beast

Sagramonte a knight errant, comes to the planet in search of Gundemar The Questing Beast. He then takes Dr. Smith and Will hostage.

The Toymaker

Episode: 2x18 | Airdate: Jan 25, 1967

The Toymaker

Doctor Smith and Will discover a old android machine from the Celestial Department store and end up getting sucked into the machine. There they meet a toymaker who refuses to believe that they are both human.

Mutiny in Space

Episode: 2x19 | Airdate: Feb 1, 1967

Mutiny in Space

A space pirate looking for his crew that mutinied finds Will and Dr. Smith trying to repair his empty ship.

The Space Vikings

Episode: 2x20 | Airdate: Feb 8, 1967

The Space Vikings

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.

Rocket to Earth

Episode: 2x21 | Airdate: Feb 15, 1967

Rocket to Earth

Smith is keen for the job of sorcerer's apprentice after learning that a space magician's rocket ship can reach Earth in a few hours.

The Cave of the Wizards

Episode: 2x22 | Airdate: Feb 22, 1967

The Cave of the Wizards

Shortly before lift-off, Dr. Smith discovers a cave inhabited by devices, which are the remnants of a once-mighty civilization; the Draconians. As the countdown draws near, Dr. Smith falls ever-more-so under the influence of the Draconians.

Treasure of the Lost Planet

Episode: 2x23 | Airdate: Mar 1, 1967

Treasure of the Lost Planet

Dr. Smith, Penny and Will are out playing a game and Penny finds a gold coin on the game board. They then find a trail of the gold coins and Dr. Smith falls into a cave containing a skeleton of an alien along with a old treasure chest. The Robinsons then have another encounter with the notorious space pirate Captain Tucker.

Revolt of the Androids

Episode: 2x24 | Airdate: Mar 8, 1967

Revolt of the Androids

In the second of two sequels to Lost in Space: The Android Machine (1966), Verda's sheltered by the Robinsons after she's marked for destruction by the Celestial Department Store. To that end, the store dispatches a killer android: IDAK (Instant Destroyer And Killer).

The Colonists

Episode: 2x25 | Airdate: Mar 15, 1967

The Colonists

A female alien meets the Robinsons and uses them to help erect an arch to bring her people to colonize the Robinsons' planet.

Trip Through the Robot

Episode: 2x26 | Airdate: Mar 22, 1967

Trip Through the Robot

While in the Valley of Shadows the Robot is affected by strange forces and grows to the size of a building. Will and Dr. Smith enter the Robot to try to reverse the process and save him.

The Phantom Family

Episode: 2x27 | Airdate: Mar 29, 1967

The Phantom Family

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.

The Mechanical Men

Episode: 2x28 | Airdate: Apr 5, 1967

The Mechanical Men

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.

The Astral Traveler

Episode: 2x29 | Airdate: Apr 12, 1967

The Astral Traveler

Will and Dr. Smith find a cave that transports them to Earth, 19th-century Scotland.

The Galaxy Gift

Episode: 2x30 | Airdate: Apr 26, 1967

The Galaxy Gift

Penny will not give up the belt entrusted to her by an alien even if it means their deaths

Season 3

Condemned of Space

Episode: 3x01 | Airdate: Sep 6, 1967

Condemned of Space

The Robinsons leave their planet to escape a collision with a comet and find a ship full of frozen convicts.

Visit to a Hostile Planet

Episode: 3x02 | Airdate: Sep 13, 1967

Visit to a Hostile Planet

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 194

Kidnapped in Space

Episode: 3x03 | Airdate: Sep 20, 1967

Kidnapped in Space

A spaceship requests medical help for their computer and Dr. Smith has to perform brain surgery on it.

Hunter's Moon

Episode: 3x04 | Airdate: Sep 27, 1967

Hunter's Moon

After killing a hostile alien, Professor Robinson comes across a "hunter" and he must replace his dead prey.

The Space Primevals

Episode: 3x05 | Airdate: Oct 4, 1967

The Space Primevals

On a planet where a primitive people are ruled by a computer, Doctor Smith goes against character and saves Major West's life.

Space Destructors

Episode: 3x06 | Airdate: Oct 11, 1967

Space Destructors

Using an alien machine Doctor Smith creates an army of cyborgs to conquer the universe.

The Haunted Lighthouse

Episode: 3x07 | Airdate: Oct 18, 1967

The Haunted Lighthouse

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.

Flight Into the Future

Episode: 3x08 | Airdate: Oct 25, 1967

Flight Into the Future

Accidentally 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.

Collision of Planets

Episode: 3x09 | Airdate: Nov 8, 1967

Collision of Planets

A group of space hippies is going to destroy the planet the Robinsons are on.

Space Creature

Episode: 3x10 | Airdate: Nov 15, 1967

Space Creature

When a gaseous creature engulfs the Jupiter 2, the other crew members disappear leaving Will and Doctor Smith alone.

Deadliest of the Species

Episode: 3x11 | Airdate: Nov 22, 1967

Deadliest of the Species

The Robot "falls in love" with an evil female robot sought by two aliens.

A Day at the Zoo

Episode: 3x12 | Airdate: Nov 29, 1967

A Day at the Zoo

Galaxic showman Farnum B. wants to exhibit the Robinsons in his zoo.

Two Weeks in Space

Episode: 3x13 | Airdate: Dec 13, 1967

Two Weeks in Space

Two escaped thieves transform themselves into humans and pretend to be tourists as Smith turns the Jupiter 2 into a hotel.

Castles in Space

Episode: 3x14 | Airdate: Dec 20, 1967

Castles in Space

Will meets a princess who is escaping two bounty hunters, yet Will gets kidnapped instead.

The Anti-Matter Man

Episode: 3x15 | Airdate: Dec 27, 1967

The Anti-Matter Man

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 an evil John Robinson.

Target Earth

Episode: 3x16 | Airdate: Jan 3, 1968

Target Earth

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.

Princess of Space

Episode: 3x17 | Airdate: Jan 10, 1968

Princess of Space

Penny is kidnapped by aliens who think that she is the missing Princess Alpha.

The Time Merchant

Episode: 3x18 | Airdate: Jan 17, 1968

The Time Merchant

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.

The Promised Planet

Episode: 3x19 | Airdate: Jan 24, 1968

The Promised Planet

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.

Fugitives in Space

Episode: 3x20 | Airdate: Jan 31, 1968

Fugitives in Space

Don and Doctor Smith are sent to an intergalactic prison after coming across an escapee.

Space Beauty

Episode: 3x21 | Airdate: Feb 14, 1968

Space Beauty

Farnum B, the intergalactic showman, again encounters the Robinsons as he presents the Galaxy Beauty Pageant, and its sponsor wants Judy to enter - and win.

The Flaming Planet

Episode: 3x22 | Airdate: Feb 21, 1968

The Flaming Planet

Doctor Smith disposes of a plant which has grown to an intense size, and becomes attached to the hull of the Jupiter 2.

The Great Vegetable Rebellion

Episode: 3x23 | Airdate: Feb 28, 1968

The Great Vegetable Rebellion

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.

Junkyard in Space

Episode: 3x24 | Airdate: Mar 6, 1968

Junkyard in Space

With the Robinsons running out of food, Dr. Smith trades the ship and the Robot to a junk man for food.

Specials

No Place to Hide

Episode: S01 Special | Airdate: Oct 16, 1997

No Place to Hide

No Place to Hide is the title of the 1965 pilot episode produced for CBS to promote the television series Lost in Space. The episode was directed byIrwin Allen. It was not broadcast until 1997, which is also the year of the fictional mission's liftoff.

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