Writer: Peter Packer
Director: Nathan Juran
Guest Cast: Strother Martin
The Robinsons prepare for a quick
takeoff when they find that a mining
engineer blasting for a life-giving
mineral has caused a chain-reaction of
earthquakes that will disintegrate the
planet.
Writers: William Read Woodfield, Alan Balter
Director: Don Richardson
Guest Cast: Vitina Marcus
Setting course once more for Alpha
Centauri, the Robinson's journey is
again hampered by Smith, who first dumps
the ship's fuel into space, then almost
pilots the Jupiter 2 into a sun. Then
Athena, the Green Girl who wants the
Jupiter 2's deutronium fuel for food,
hypnotises Smith into going into space.
The Robinson's rescue of him once again
throws the ship off course, and they are
again lost in space.
Writer: Peter Packer
Director: Nathan Juran
Guest Cast: Sue England, Michael Fox
A voice claiming to be from Earth
instructs Smith to land Jupiter 2 on the
planet it is passing. When Smith obeys,
the Robinsons find a civilization of
robots who make humans their
slaves.
Writer: Barney Slater
Director: Don Richardson
Guest Cast: Wally Cox, Janos Prohaska
Jupiter 2 crash lands on a planet whose
only inhabitants are a strange little
hermit and his giant bird. Smith, Will,
and the Robot are captured by the alien,
who plans to mobilize an army to destroy
the Jupiter 2. Of course, he has no
army, as the Robinsons learn. Also, Dr.
Smith drinks an alien nectar, later
realizing that it is highly explosive,
and he may blow up at any time.
Writers: Bob & Wanda Duncan
Director: Harry Harris
Guest Cast: James Westerfield, Melinda Fee, Harry Varteresian, Michael Greene
A space circus comes to town (or
planet), and give a show for the
Robinsons. The owner learns that Will
has the power to materialize anything he
wants, when assisted. He convinces Will
to run away with the circus, for the
good of his family.
Writer: Barney Slater
Director: Nathan Juran
Guest Cast: Dawson Palmer
An outer-space court accuses the
Robinsons of various crimes during their
journey, but after questioning, it is
shown that Smith was the culprit behind
each incident. The Robinsons convince
the tribunal not to punish Smith!
Writers: Bob & Wanda Duncan
Director: Don Richardson
Guest Cast: Dee Hartford, Fritz Feld
Smith finds a "Celestial Department
Store catalog" and accidentally orders
an emotionless "female" android, whom
the Robinsons teach to be human.
Unfortunately, the department store's
manager, Zumdish, either wants payment,
or the android back; preferably the
android, since it has been improved
upon. When the Robinsons refuse to
cooperate, the manager takes steps to
force them.
Writer: Barney Slater
Director: Harry Harris
Guest Cast: Mike Kellin, Harry Monty, Ronald Weber, Peter Brocco, Chuck Roberson
A travelling show lands on the planet,
and the owner tells Smith that if he
agrees to box with a midget and wins, he
will be returned to Earth. However, it
is a trick, and he loses. The troop is
really testing Earth to see if it can be
conquered easily, and to save it, John
challenges the owner to a battle.
Writer: Jackson Gillis
Director: Don Richardson
Guest Cast: Malachi Throne, Ted Cassidy, Maxine Gates
Convinced that the Robinsons have maps
which will lead him to a space princess,
a thief captures Will, Penny, and Smith.
Will is made an apprentice thief, Penny
is held prisoner, and Smith is marked
for death under a pendulum.
Writer: Barney Slater
Director: Justis Addis
Guest Cast: Henry Jones, Allan Melvin
An "alien" that Smith is terrified of
turns out to be his cousin Jeremiah, who
is in cahoots with an intergalactic
Mafia in an attempt to murder Dr. Smith
and claim his family inheritance.
Writer: Michael Fessier
Director: Nathan Juran
Guest Cast: Allan Melvin, Charles Arthur, Mickey Manners, Lane Bradford, Eddie Quinlan
Smith's doppelganger, a space desperado,
forces him to change clothes. Smith is
then arrested as the real gunslinger,
and is taken away to another planet to
be executed for his "crimes."
Writer: Carey Wilber
Director: Don Richardson
Guest Cast: Gerald Mohr
Smith plays a musical instrument he
finds, and is transported to hell, or so
he thinks. Actually, it's a prison for
one criminal, who pretends to be the
devil in order to get Smith to help him
escape. Judy and Don also visit "hell".
The key to his escape was hidden in the
musical instrument, which playing causes
him pain.
Writer: Barney Slater
Director: Nathan Juran
Guest Cast: Jim Mills
Aliens steal and disassemble the Robot
in order to find out how Earth machines
work. With that knowledge, they plan to
build a machine to take over all other
machines on Earth, and subjugate the
human race.
Writer: Peter Packer
Director: Don Richardson
Guest Cast: John Abbott, Dawson Palmer, Harry Monty, Frank Delfino
To make his android more "human", a
scientist drains all emotions from the
Robinsons, leaving them unimaginative
and apathetic.
Writer: Barney Slater
Director: Don Richardson
Guest Cast: Dennis Patrick, Ronald Gans, Bill Troy
A lesson in prejudice. Two
representatives from their respective
planets, that are at war with each
other, land on the Robinson's planet.
One is a handsome golden man, the other
a hideous frog creature. Dr. Smith
wishes to help the Golden man destroy
his foe, who claims to be the good guy,
while Penny wants to help the other, who
is unfriendly to strangers. It is later
learned that the Golden man was wearing
a disguise, and is even more hideous
than his foe. He was trying to trick the
Robinsons into helping him, but in the
end, they saw the light.
Writer: Peter Packer
Director: Nathan Juran
Guest Cast: Vitina Marcus, Harry Raybould
Athena, the green girl returns. A big,
mean, ugly, nasty, green brute from her
home dimension is courting her, and she
draws pretty, handsome, brave, pretty
Dr. Smith into a love triangle. The big,
green lug of course wishes to kill
Smith. Also, Will is accidentally turned
green, but Athena thinks he looks too
'pretty' to change back.
Writer: Carey Wilbur
Director: Don Richardson
Guest Cast: Hans Conreid, Sue England, Jeff County
A space knight, a sort of Don Quixote,
arrives, claiming to be after a
ferocious dragon he has chased across
the cosmos. He fills Will with stories
of quests and dragons and things, and
when Will learns that most of his
stories are lies, he loses faith in
people. Meanwhile, the knight finally
catches up with the dragon he has chased
for most of his life, and finds out that
it is a friendly, female, sentient life
form, and loses the desire to slay her,
and also his purpose in life.
Writers: Bob & Wanda Duncan
Director: Robert Douglass
Guest Cast: Fritz Feld, Walter Burke, Tiger Joe Marsh, Dawson Palmer
Smith is captured by a Celestial
Department Store ordering machine
made into a clown,
and put into the toy department. Will
and the Robot follow him into the
machine, and discover a passage back to
Earth.
Writer: Peter Packer
Director: Don Richardson
Guest Cast: Ronald Long
An insane space pirate, Zahrk, abducts
Will, Smith, and the Robot and uses them
as his crew in his relentless search for
his first mate, Mr. Christiansen, who
committed mutiny.
Writer: Margaret Brookman Hill
Director: Ezra Stone
Guest Cast: Sheila Mathews, Bern Hoffman
Dr. Smith steals the gloves and hammer
of Thor, god of Thunder, and the enraged
deity challenges the good Dr. to a duel
to the death. Through trickery, Smith
convinces Thor that he is ineffectual
and would lose, just when Valhalla is
attacked by giants.
Writer: Barney Slater
Director: Don Richardson
Guest Cast: Al Lewis
Smith plays sorcerer's apprentice to a
space magician, hoping to steal his
spaceship and return to Earth. However,
the ship is programmed to self-destruct
when it reaches space.
Writer: Peter Packer
Director: Don Richardson
Guest Cast: Bob May, Dawson Palmer, Jim Mills, Michael Fox, Larry Dean
Luring Smith into a cave, a computer
gradually takes over his mind and body,
transforming him into an alien. With a
launch window coming up soon, the
Robinson's must get Smith's true
identity to emerge, or leave him
behind.
Writer: Carey Wilber
Director: Harry Harris
Guest Cast: Albert Salmi, Craig Duncan, Jim Boles
A hideous mechanical head mistakes Dr.
Smith for its master and tries to lead
him to a priceless treasure. A humanoid
group of pirates finds out and forces
Smith to take them along. A captain
joins the Robot, Will, Dr. Smith and
Penny on the treasure hunt that yields a
disappointing booty.
Writer: Bob & Wanda Duncan
Director: Don Richardson
Guest Cast: Dee Hartford, Don Matheson, Dawson Palmer
Verda the department store android
returns, pursued by an alien superman
sent to bring her back or destroy her.
When the Robinsons win over the
superman's sympathies, the CDS machine
simply creates another android, stronger
and totally devoted to destruction.
Writer: Peter Packer
Director: Ezra Stone
Guest Cast: Francine York
The Robinson men are captured by female
warriors and put to work, while the
women are treated to lives of luxury.
The men's fate hinges on Smith, who has
wormed his way into the Amazon queen's
affections and can sabotage her
base.
Writer: Barney Slater
Director: Don Richardson
Guest Cast: None
Losing power and unable to be recharged,
the dying Robot wanders into a gaseous
area, where the vapors turn him into a
giant. Smith and Will crawl inside him
to reverse his ionic process, shrink him
back to size, and possibly save him.
Writer: Peter Packer
Director: Ezra Stone
Guest Cast: Alan Hewitt
Will discovers that his family has been
replaced by android duplicates. Their
creator wants Will to teach them how to
act like real humans...or the original
Robinsons will die.
Writer: Barney Slater
Director: Seymour Robbie
Guest Cast: Jim Mills
An army of tiny robots, all resembling
the Robinson's Robot, lay siege to the
Robinson's camp and demand the return of
their 'leader', the Robot. The army is
vicious, and want to take over the
universe. They realize that the Robot is
too kind to help them, so they transfer
Smith's personality into the Robot, and
vice versa.
Writer: Carey Wilber
Director: Don Richardson
Guest Cast: Sean McClory, Dawson Palmer
Will passes through a space warp into
19th-century Scotland, where a ghost and
a monster inhabit an old castle. Smith
follows, and the ghost learns that
Smith's ancestors were responsible for
his death. He then plans Smith's
beheading. But mercy arrives for both
Smith and the ghost (and Angus the
monster!) from beyond.
Writer: Barney Slater
Director: Ezra Stone
Guest Cast: John Carradine, Jim Mills
Penny's loyalties are tested when she
must either watch her family die or give
up an amulet an alien warned her not to.
Other aliens will transport her to an
unreal "Earth" as a reward, if she will
sacrifice the gift. They persuade Dr.
Smith to help them trick Penny.