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Season guide

Lost in Space: Season 2

30 episodes Premiered Sep 16, 1966
Previously on Lost in Space

Season 2 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Directly follows the overarching narrative developments of Lost in Space Season 1.
  • ⚡ Faction dynamics and core character alliances shift under escalating external stakes.
  • ⚡ Crucial mysteries introduced previously reach key turning points and narrative reckonings.
  • ⚡ Sets up serialized story arcs that build directly toward the climactic season finale.
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Season 2 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 2 Progress Shield

Future titles & synopses blurred. Tap "Reveal" on any card to peek.
Binge Efficiency Engine

Season 2: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

10%
90%
Mytharc (3): Crucial lore & season climaxes
Core (27): Character development & subplots
Side Quest (0): Standalone / filler
S2·E1 Mytharc

Blast Off into Space

Sep 16, 1966

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

S2·E2 Core

Wild Adventure

Sep 21, 1966

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 Eart

S2·E3 Core

The Ghost Planet

Sep 28, 1966

Due to Smith's actions the crew has had to land there ship on an alien planet which is run by cyborgs. Meanwhile the crew try to break free for the captors who promise them power a

S2·E4 Core

Forbidden World

Oct 5, 1966

When an alien believes that the Jupiter 2 has fired a missile at them that alien puts the crew in grave danger for there lives.

S2·E5 Core

Space Circus

Oct 12, 1966

The Space Family Robinson go through a food crisis when their plant purifier breaks down. Will and Dr Smith discover a travelling show of circus people, and Will is later tricked

S2·E6 Core

The Prisoners of Space

Oct 19, 1966

The Robinsons and Major West are imprisoned in their camp, after being indited to appear before the a trial in court space crimes. As the trial begins, Dr Smith's name begin's to

S2·E7 Core

The Android Machine

Oct 26, 1966

Will and Dr Smith discover an old, abandoned Android Machine. When Dr Smith plays with the buttons on the machine, he accidently orders an Android. He thinks he has it for free,

S2·E8 Core

The Deadly Games of Gamma 6

Nov 2, 1966

When a troope of Galactic Gladiators arrive on the planet, they challenge Professor Robinson to a duel, which will be aired all of the galaxy. John declines saying he isn't intere

S2·E9 Core

The Thief from Outer Space

Nov 9, 1966

A person know as ' the thief from outer space' appears in a puff of smoke, will agrees help help him rescue a princess who was lost more than 200 years ago by evil vizier.

S2·E10 Core

The Curse of Cousin Smith

Nov 16, 1966

When Dr Smith's cousin Jeremiah Smith arrives on the planet, everyone welcomes him, except Dr Smith. Dr Smith alienates himself from the family, and refuses to return until his co

S2·E11 Core

West of Mars

Nov 11, 1966

Dr Smith is confronted by an identical look-alike called Zeno, who is on the run from the law. Zeno makes him trade places and Dr Smith, out of fear confesses to Zeno's crimes. H

S2·E12 Core

A Visit to Hades

Dec 7, 1966

Dr Smith, Will and the Robot discover an old harp under a carved out rock. They discover that in playing the right tune, it unlocks a passage to another world. In travelling here

S2·E13 Core

The Wreck of the Robot

Nov 14, 1966

While playing a outdoor match, Will and Smith's ball explodes, and as the smoke clears there ball has turns into gold. the ball rolls into the cave which has 3 aliens inside, the a

S2·E14 Core

The Dream Monster

Dec 21, 1966

During a heat wave, Penny comes across a giant, golden man, and his owner. She is told that the creature is called Raddion, a creation which only needs human emotions to be comple

S2·E15 Core

The Golden Man

Dec 28, 1966

While the rest of the men are away, Dr Smith and the Robinson women are affronted by a mysetrious man in gold, who claims to be at war with a race of green aliens. Penny meets the

S2·E16 Core

The Girl From the Green Dimension

Jan 4, 1967

Athena the girl from the green dimension who hypnotised Dr Smith during thier space flight arrives on the planet. She still is in love with Dr Smith, which he uses to bribe her to

S2·E17 Core

The Questing Beast

Jan 11, 1967

Will and Dr Smith are confronted by a knight, who says he is on a quest to seek out and destroy the beast Gundemar. Penny, meanwhile, meets Gundemar and befriends her. Will becom

S2·E18 Core

The Toymaker

Jan 25, 1967

Dr Smith discovers another Android Machine, in the middle of a dangerous fisher. When he tries to order something, he is trapped inside the machine. Later when Will tries to get

S2·E19 Core

Mutiny in Space

Feb 1, 1967

Dr. Smith's finds an alien ship and wants to use it to get back to earth, but he doesn't count for the owner of the ship admiral zahik to turn up and wreck his plans.

S2·E20 Core

The Space Vikings

Feb 8, 1967

A storm looms up and the two gloves of Thor appear from space and straight into the waiting hands of Dr. Smith. Then are then taken away to see the real Thor who will decide there

S2·E21 Core

Rocket to Earth

Feb 15, 1967

The crew are outside playing ball when a magician called Zalto. Dr. Smith uses Zalto to conjure up a space ship so he can use it to get back to earth.

S2·E22 Core

The Cave of the Wizards

Feb 22, 1967

Dr. smith hits his head on a rock and goes into the depths of a cave where he finds a mummy, meanwhile the crew have to blast off at 8:00am, and while the also have to rescue Dr. S

S2·E23 Core

Treasure of the Lost Planet

Mar 1, 1967

Alonzo P. Tucker returns, this time more in keeping with the pirate character he tried to create in his first appearance. This time Tucker is searching for Billy Bones' treasure,

S2·E24 Core

Revolt of the Androids

Mar 8, 1967

Penny meets up with Verda the Android Dr Smith ordered, who is on the run from a super android, IDAK. She is now much more human-like. IDAK however is faulty and is incapable of

S2·E25 Core

The Colonists

Mar 15, 1967

The Robinson's communications system is knowcked out, and they discover that the culprit is a female warrior, who is planing on making this planet a colony for her people. She enc

S2·E26 Core

Trip Through the Robot

Mar 22, 1967

With the power source of the Robinson's at a low, they are unable to recharge the Robot. As a result of this the Robot leaves the group, not wanting to be a further burden to them

S2·E27 Core

The Phantom Family

Mar 29, 1967

Will returns to camp following a cosmic storm. John and Maureen are not there as they are at the weather relay station for a few nights. When he gets there, the rest of the famil

S2·E28 Core

The Mechanical Men

Apr 5, 1967

After Dr Smith is turned away from camp yet again, he awakes from a nap to find he has been tied up by little mechanical men. The Robinson's camp is invaded the mechanical men of

S2·E29 Mytharc

The Astral Traveler

Apr 12, 1967

Dr Smith and Will become trapped in a cave during a cosmic storm. Will is accidently pulled through a cosmic time warp, and ends up on Earth, in Scottish castle. He meets a headl

S2·E30 Mytharc

The Galaxy Gift

Apr 26, 1967

As they are rehearsing a play, Dr Smith, Will, Penny and the Robot encounter a creature who appears to be suffocating. Dr Smith refuses to help out of fear but Penny helps him. Th

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