Star Trek - The Original Series
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The Turnabout Intruder
aired: Mon, Jun 2, 1969
The Enterprise is in danger when Janice Lester, one of Kirk's former lovers, steals his body.
All Our Yesterdays
aired: Thu, Mar 13, 1969
Kirk, Spock and McCoy enter a time portal and get stuck in the past on a planet about to be consumed by a nova.
The Savage Curtain
aired: Thu, Mar 6, 1969
Kirk and Spock meet Abraham Lincoln and Surak of Vulcan and must do battle with some of history's most terrible villains.
The Cloud Minders
aired: Thu, Feb 27, 1969
To acquire the resources to cure a space plague, Kirk must resolve a mining dispute between the cultural elites of the cloud city of Stratos and the miners on the surface.
The Way to Eden
aired: Thu, Feb 20, 1969
The Enterprise picks up a group of space "hippies" looking for Eden.
Requiem for Methuselah
aired: Thu, Feb 13, 1969
While seeking a cure for a fever ravaging the Enterprise, Kirk and Spock encounter Flint, a hermit-like Earthman, and his beautiful young ward.
The Lights of Zetar
aired: Thu, Jan 30, 1969
The Enterprise must deal with discorporeal cloud-like aliens who have already destroyed the inhabitants of a library planet and plan to eliminate the Enterprise crew if they cannot acquire a human host.
That Which Survives
aired: Thu, Jan 23, 1969
Kirk, McCoy, and Sulu are stranded on a barren planet where a mysterious woman attempts to kill them one at a time, while the Enterprise must travel halfway across the galaxy to rescue them.
The Mark of Gideon
aired: Thu, Jan 16, 1969
Kirk beams down on a diplomatic mission...and finds himself on an Enterprise where all the crew have vanished and only a mysterious woman resides.
Let That Be Your Last Battlefield
aired: Thu, Jan 9, 1969
The Enterprise finds itself host to two alien beings from the same planet, who share an intense and self-destructive hatred of each other.
Whom Gods Destroy
aired: Thu, Jan 2, 1969
Kirk and Spock deliver medicine to an insane asylum where a former Starfleet captain is being held, only to discover that he has freed the inmates and is running the place.
Elaan of Troyius
aired: Thu, Dec 19, 1968
The Enterprise must escort an alien princess to her marriage to seal an interplanetary alliance...but she becomes attracted to Kirk.
aired: Thu, Dec 5, 1968
On a planet doomed to destruction, Kirk, Spock and McCoy become involved with two aliens who use them as laboratory animals in a bizarre series of tests on an alien empath who may be the savior of her planet.
Wink of an Eye
aired: Thu, Nov 28, 1968
Hyper-accelerated aliens, invisible to the naked eye, take over the Enterprise.
aired: Thu, Nov 21, 1968
Platonians use psychokinetic power to toy with the crew.
The Tholian Web
aired: Thu, Nov 14, 1968
Kirk is trapped in interphase, while the Enterprise is trapped by a powerful energy web.
For the World Is Hollow and I Have Touched the Sky
aired: Thu, Nov 7, 1968
At the same time McCoy discovers that he has a year to live, the U.S.S. Enterprise encounters the asteroid Yonada which is determined to be artificially propelled.
Day of the Dove
aired: Thu, Oct 31, 1968
A malevolent entity pits Klingons against the Enterprise crew.
Spectre of the Gun
aired: Thu, Oct 24, 1968
When coming to a xenophobic isolationist planet, Captain Kirk and his landing party are punished for trespassing. They are sentenced to death in a surreal recreation of the Gunfight at the OK Corral with the landing on the losing side.
Is There in Truth No Beauty?
aired: Thu, Oct 17, 1968
Miranda Jones, a telepath who studied mental disciplines on Vulcan, arrives with Ambassador Kolos, a Medusan - an alien life form whose physical form is so hideous, humanoid life forms are driven insane if they look upon him.
And the Children Shall Lead
aired: Thu, Oct 10, 1968
A group of children is being controlled by and evil force.
The Paradise Syndrome
aired: Thu, Oct 3, 1968
Kirk loses his memory and begins a life in a native village.
The Enterprise Incident
aired: Thu, Sep 26, 1968
Captain Kirk becomes increasingly erratic and orders the Enterprise into Romulan space...where the ship is captured by a beautiful Romulan commander.
aired: Thu, Sep 19, 1968
Kirk pursues aliens who have taken Spock's brain.
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aired: Thu, Mar 28, 1968
Kirk must decide whether to thwart or help a traveller from the future sent back to 1960s Earth on a secret mission.
Bread and Circuses
aired: Thu, Mar 14, 1968
Spock and McCoy are forced to fight in Roman-like games on a planet whose inhabitants see glatiator matches to the death as entertainment.
The Ultimate Computer
aired: Thu, Mar 7, 1968
Starfleet uses the Enterprise to test a new super-sophisticated computer, but it soon develops a mind of its own.
The Omega Glory
aired: Thu, Feb 29, 1968
The Enterprise finds a planet devastated by disease that completely drains its victims of moisture.
By Any Other Name
aired: Thu, Feb 22, 1968
The Enterprise's command crew must thwart an invasion by aliens from another galaxy who plan to conquer this one.
Patterns of Force
aired: Thu, Feb 15, 1968
Enterprise is sent to planet Ekos to investigate a disappearance of Federation historian John Gill, only to find they have developed a culture identical to Nazi Germany.
Return to Tommorrow
aired: Thu, Feb 8, 1968
Telelpathic aliens take over Kirk and Spock's bodies in order to save themselves from oblivion.
A Private Little War
aired: Thu, Feb 1, 1968
Kirk becomes involved in an arms race when the Klingons equip a native people with superior weaponry.
The Immunity Syndrome
aired: Thu, Jan 18, 1968
After Spock senses the destructiion of a Vulcan ship, the Enterprise is sent to investigate the loss of all communications in that star system .
A Piece of the Action
aired: Thu, Jan 11, 1968
Kirk investigates a planet with an Earth-like 1920's gangster culture.
The Gamesters of Triskelion
aired: Thu, Jan 4, 1968
Kirk, Chekov, and Uhura are kidnapped and forced to participate in a series of gladiatorial games.
The Trouble With Tribbles
aired: Thu, Dec 28, 1967
The Enterprise is overrun by furry creatures while tangling with Klingons and bureaucrats.
Wolf in the Fold
aired: Thu, Dec 21, 1967
Scotty is implicated in a Jack the Ripper-style murder.
aired: Thu, Dec 14, 1967
The Enterprise must deal with a creature from Kirk's past that feeds on human blood.
The Deadly Years
aired: Thu, Dec 7, 1967
A landing party, including the command staff, is infected with a disease that causes rapid aging and senility.
aired: Thu, Nov 30, 1967
The Enterprise crew clash with the Kingons in a local power struggle on tribal planet Capella IV.
Journey to Babel
aired: Thu, Nov 16, 1967
Tensions run high when the Enterprise transports ambassadors, including Vulcans Sarek and Amanda, to The Babel Conference.
aired: Thu, Nov 9, 1967
When their shuttle is diverted to a planetoid, Kirk, Spock, and McCoy encounter Earth's Warp Drive pioneer, Zefram Cochrane, who appears to have survived there alone for 150 years.
aired: Thu, Nov 2, 1967
The Enterprise is taken over by a group of androids who are working for Kirk's old nemesis, Harry Mudd.
aired: Thu, Oct 26, 1967
Aliens on a mission of conquest threaten the crew with witches, gouls, and goblins on a mysterious planet.
The Doomsday Machine
aired: Thu, Oct 19, 1967
A machine that destroys entire planets threatens the Enterprise.
aired: Thu, Oct 12, 1967
Kirk attempts to assist a primitive people that are ruled over by a computer named Vaal.
aired: Thu, Oct 5, 1967
A transporter malfunction sends Kirk, Scotty, McCoy and Uhura to a parallel universe.
aired: Thu, Sep 28, 1967
The Enterprise encounters an ancient Earth probe bent on the sterilization of all life.
Who Mourns for Adonais?
aired: Thu, Sep 21, 1967
The Enterprise encounters an alien who claims to be the Greek god Apollo.
aired: Thu, Sep 14, 1967
Spock undergoes the Vulcan mating ceremony.
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aired: Wed, Apr 12, 1967
Kirk's brother, his wife, and much of the Deneva colony are found dead from a mysterious epidemic of mass insanity. Spock too becomes infected but survives with Vulcan techniques until he is blinded by the cure McCoy tests on him.
The City On the Edge of Forever
aired: Wed, Apr 5, 1967
Accidentally overdosing on medication, a psychotic McCoy leaps through a time portal into the 1930s and somehow disrupts Earth's future so that the Federation and Starfleet do not exist. The stranded Kirk and Spock follow him back to set things right, where a tragic love tests Kirk's resolve.
The Alternative Factor
aired: Wed, Mar 29, 1967
When the entire universe seems to "blink," the Enterprise suspects invasion but finds only Lazarus, a man who seems to alternate between two different extremes of nature. In time, "he" is found to be two twinned beings locked in eternal struggle between their matter and anti-matter universes — a rift Kirk must help seal.
Errand of Mercy
aired: Wed, Mar 22, 1967
In the first episode to feature the Klingons, Kirk and Spock intervene to offer protection to the people of a planet caught dangerously between the Empire and the Federation. But the seemingly lethargic Organians turn out to have a few surprises of their own.
The Devil in the Dark
aired: Wed, Mar 8, 1967
When mysterious deaths and damage in the mines of Janus VI threaten operations at several colony worlds, Kirk and Spock find not a monster but a mother — a silicon-based lifeform just doing its duty. The foe becomes a friend thanks to McCoy's cure by concrete and the Vulcan's mind-meld.
This Side of Paradise
aired: Wed, Mar 1, 1967
The Enterprise visits a colony where flower spores provide the settlers with peaceful contentment — and Spock finds he can experience love. The spores also offer protection from fatal stellar radiation, but Kirk's crew finds they also have a more sinister effect.
A Taste of Armageddon
aired: Wed, Feb 22, 1967
Ordered to open relations with Eminiar VII, the Enterprise finds itself tagged in a mutual "computer war" with the planet's neighbor, Vendikar. The idea that citizens report voluntarily for disintegration according to the program of the "clean" war drives Kirk to dirty things up at the source, forcing a real peace.
aired: Wed, Feb 15, 1967
Kirk meets Khan, a leader of Earth's Eugenics War of the 1990s who has been preserved in a old cryo-stasis ship along with dozens of his fellow genetically-bred "supermen." But Khan is anything but an antiquity, and his ambition and ruthlessness burn anew in a bid to hijack the Enterprise with the help of an admiring female officer.
The Return of the Archons
aired: Wed, Feb 8, 1967
Searching Beta III for survivors of the USS Archon, Kirk and crew discover a society whose citizens appear to be staid and respectable, until the advent of "Red Hour" allows them to run amok. Kirk and Spock avoid being "absorbed" into the "body" long enough to discover the bizarre source of the planet's unity.
aired: Wed, Feb 1, 1967
Arriving at Starbase 11, Kirk faces court-martial for negligence resulting in the death of a colleague. Accused by the victim's family and prosecuted by a former lover, Kirk's career seems doomed until an unlikely attorney and Spock's chess game uncover the truth.
Tomorrow Is Yesterday
aired: Wed, Jan 25, 1967
Transported back in time to 20th century Earth by a black star's gravity well, Kirk rescues the pilot of a destroyed U.S. interceptor plane who had seen the ship as a UFO. Now the pilot must be returned without altering Earth's future — and the Enterprise and crew get back to their own time.
aired: Wed, Jan 18, 1967
To settle a skirmish between the Enterprise and a Gorn ship, a powerful race calling itself the Metrons force Kirk and the Gorn captain to fight to the death on a empty world, using only their wits and natural materials. The captain eventually finds empathy with the Gorn, surprising not only him but the Metrons as well.
The Squire of Gothos
aired: Wed, Jan 11, 1967
Encountering an uncharted planet in an empty region of space, Kirk and his crew are entertained by Trelane, a playful being who lacks the self control to wield his great psionic powers with discipline. When he threatens the whole ship, Kirk himself faces down Trelane's tantrums until relief surprisingly arrives.
The Galileo Seven
aired: Wed, Jan 4, 1967
Crash-landing on Taurus II, the seven crewmembers aboard the Shuttlecraft Galileo are unable to communicate with the Enterprise or to escape the planet's atmosphere and its hostile, giant natives. Spock's first command finds him with a restless crew as he faces the failures of logic at every turn.
aired: Wed, Dec 28, 1966
When McCoy sees the white rabbit from Alice in Wonderland and is later stabbed by a black knight, the crew begins to realize that the idyllic planet they are visiting is anything but. Somehow, the planet holds the dangerous power to turn any thought into reality.
Balance of Terror
aired: Wed, Dec 14, 1966
Like the Enterprise crew, viewers got their first look at the Romulans in this tale as Kirk engages the enemy commander in a cat-and-mouse game of wits. How should Kirk react as the Romulans wipe out century-old treaty border outposts with a new superweapon, and Spock's loyalty is suddenly questioned?
The Conscience of the King
aired: Wed, Dec 7, 1966
As one of the two surviving witnesses to the mass murders of "Kodos the Executioner," Kirk learns that the criminal may be disguising himself as an actor in a traveling troupe. But Shakespeare has nothing on this real-life tragedy once Kirk meets the suspect's beautiful daughter.
The Menagerie, Part 2
aired: Wed, Nov 23, 1966
Forced to watch Talosian transmissions of Captain Pike's visit during Spock's shipboard trial, Kirk learns just why their planet is off-limits under penalty of death — and why Spock wants to return his former captain there. (Part 2 in Star Trek's only two-parter)
The Menagerie, Part 1
aired: Wed, Nov 16, 1966
Apparently summoned to Starbase 11, Kirk, Spock and McCoy visit a former Enterprise commander, the paralyzed and horribly disfigured Christopher Pike. Incredibly, Spock then kidnaps his old captain, commandeers the Enterprise without Kirk, sets it on a forbidden course, and then turns himself in for court-martial. (Part 1 in Star Trek's only two-parter)
The Corbomite Maneuver
aired: Wed, Nov 9, 1966
While exploring an uncharted area of space, the Enterprise is outmatched and taken in tow by a massive spherical spaceship. Doomed by the imposing being Balok and his huge ship, Kirk finally resorts to a bluff about a self-destruct system that will also destroy Balok's ship -- and the gamble pays off with surprising results.
Dagger of the Mind
aired: Wed, Nov 2, 1966
Tipped off by a crazed runaway who is far more than he seems, Kirk investigates an experimental facility at Tantalus II for mentally ill criminals and finds a sinister scheme behind its amazing research.
aired: Wed, Oct 26, 1966
On a planet just like Earth that is populated only by children, Kirk's landing party contracts the virus that killed adults while stretching the youngsters' lifespan to hundreds of years. Enduring the natives' bizarre and violent tactics, the trapped party must cure themselves and the children — including one who has a crush on Kirk.
What Are Little Girls Made Of?
aired: Wed, Oct 19, 1966
Viewers are introduced to Nurse Christine Chapel in this story as she signs aboard the crew to search for her missing fiance, the brilliant Dr. Korby. He turns up on Exo III, oddly working on a plan to create android duplicates of key figures, beginning with James Kirk — until the captain sabotages his duplicate to alert Spock.
aired: Wed, Oct 12, 1966
Just as his ship is destroyed by an asteroid field, conman Harry Mudd and his "cargo" of three beautiful wives for lonely miners are rescued by the Enterprise and arrested. The rescue burns out the big starship's dilithium crystals, but Kirk's unhappy reliance on Mudd's clients for replacements is in jeopardy when the women's real secret is exposed.
The Enemy Within
aired: Wed, Oct 5, 1966
A magnetic ore brought back from Alfa 177 causes a beam break-up in the transporter, splitting Captain Kirk into two different beings: one "good" and one "evil." The malfunction must be repaired before Sulu's stranded landing party freezes to death -- and Kirk's separated "halves" perish.
The Naked Time
aired: Wed, Sep 28, 1966
An alien virus picked up from the now-dead Psi 2000 outpost strips the crew of their inhibitions, causing chaos as each individual is overcome by hidden emotions -- even Spock. Meanwhile, the disabled crew have left the Enterprise unable to react to the planet break-up below that is pulling them down.
Where No Man Has Gone Before
aired: Wed, Sep 21, 1966
While exploring the energy barrier at galaxy's edge that crippled an earlier ship, Kirk's long-time friend and crewmate Gary Mitchell begins mutating into a god-like entity disdainful of the "mortals" around him. Can the captain overcome his own feelings for his friend before the new entity grows too powerful to stop?
aired: Wed, Sep 14, 1966
Raised from infancy by noncorporeal beings, 17-year-old Charles Evans is ferried by an Enterprise crew unaware of his true nature. Once aboard, the teenager develops a crush on Yeoman Rand and proves dangerously unable to wield his enormous psionic powers with maturity until higher authorities intervene.
The Man Trap
aired: Wed, Sep 7, 1966
Dr. Leonard "Bones" McCoy meets a former girlfriend when the Enterprise brings supplies to a remote archaeological survey group. Still attractive to McCoy, the woman's current appearance and her colleague hide a deadly secret, ultimately revealed as a tragedy of ecology.