Star Trek - The Original Series
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The Turnabout Intruder
aired: Mon, Jun 2, 1969
A woman from Kirk's past exchanges bodies with him and takes control of the ship.
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 are forced into a battle of good and evil.
The Cloud Minders
aired: Thu, Feb 27, 1969
Kirk is forced into negotiating peace on a planet with severe class inequities.
The Way to Eden
aired: Thu, Feb 20, 1969
A charismatic leader and his followers hijack the Enterprise in their search for "Eden."
Requiem for Methuselah
aired: Thu, Feb 13, 1969
Kirk and crew meet an immortal human named Flint.
The Lights of Zetar
aired: Thu, Jan 30, 1969
Zetarians threaten Lieutenant Mira Romaine.
That Which Survives
aired: Thu, Jan 23, 1969
A deadly computer image protects a long dead outpost.
The Mark of Gideon
aired: Thu, Jan 16, 1969
KKirk is abducted by aliens who wish to use him to help solve their overpopulation problem.
Let That Be Your Last Battlefield
aired: Thu, Jan 9, 1969
Two survivors of a devasted planet remain committed to destroying one another.
Whom Gods Destroy
aired: Thu, Jan 2, 1969
Kirk is confronted by one of his heroes, now criminally insane.
Elaan of Troyius
aired: Thu, Dec 19, 1968
Kirk is distracted while the Enterprise is threatened.
aired: Thu, Dec 5, 1968
The landing party is used to test an empathic race.
Wink of an Eye
aired: Thu, Nov 28, 1968
Hyperaccelerated 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
An inhabited asteroid is on a collision course with a Federation planet.
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
As punishment for trespassing, Kirk and crew are forced to re-enact the shootout at the OK Corral.
Is There in Truth No Beauty?
aired: Thu, Oct 17, 1968
The sight of a Medusan ambassador causes insanity.
And the Children Shall Lead
aired: Thu, Oct 10, 1968
A group of children are being controlled by an 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
Disguised as a Romulan, Kirk steals a cloaking device.
aired: Thu, Sep 19, 1968
Kirk pursues aliens who have taken Spock's brain.
Watch Star Trek - The Original Se... Season 2
aired: Thu, Mar 28, 1968
The Enterprise goes back in time and discovers a mysterious stranger trying to interfere with 20th-century events.
Bread and Circuses
aired: Thu, Mar 14, 1968
Spock and McCoy are forced to fight in Roman-like games.
The Ultimate Computer
aired: Thu, Mar 7, 1968
Enterprise is used to test the new M-5 computer.
The Omega Glory
aired: Thu, Feb 29, 1968
The Enterprise finds a planet devasted by disease that appears to treat the American flag with great reverence.
By Any Other Name
aired: Thu, Feb 22, 1968
Extra-galactic beings commandeer the Enterprise in an attempt to return home.
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
Telepathic aliens take over Kirk and Spock's bodies.
A Private Little War
aired: Thu, Feb 1, 1968
The Klingons provide arms to a peaceful planet and disrupt the balance of power.
The Immunity Syndrome
aired: Thu, Jan 18, 1968
A giant space amoeba threatens the entire galaxy.
A Piece of the Action
aired: Thu, Jan 11, 1968
Kirk investigates a planet with an Earth-like 1920s gangster culture.
The Trouble With Tribbles
aired: Thu, Dec 28, 1967
Three disembodied beings wager on fights staged by prisoners abducted from around the galaxy.
Wolf in the Fold
aired: Thu, Dec 21, 1967
Scotty is implicated in a Jack the Ripper-style murder.
aired: Thu, Dec 14, 1967
Kirk is determined to hunt down a vampiric entity he failed to destroy in his past.
The Deadly Years
aired: Thu, Dec 7, 1967
Accelerated aging affects the senior officers and threatens Kirk's ability to lead.
aired: Thu, Nov 30, 1967
The Enterprise crew becomes embroiled in a local power struggle on a tribal planet.
Journey to Babel
aired: Thu, Nov 16, 1967
Tensions run high when the Enterprise transports ambassadors to the Babel Conferences.
aired: Thu, Nov 9, 1967
The shuttlecraft Galileo makes a forced landing on a world with a single human inhabitant.
aired: Thu, Nov 2, 1967
A takeover leads Kirk to his old nemesis, Harry Mudd.
aired: Thu, Oct 26, 1967
Aliens on a mission of conquest hold the crew captive.
The Doomsday Machine
aired: Thu, Oct 19, 1967
A machine that destroys planets threatens the Enterprise.
aired: Thu, Oct 12, 1967
The crew discovers a paradise controlled by computer.
aired: Thu, Oct 5, 1967
Kirk, Scott, McCoy and Uhura enter a parallel universe.
aired: Thu, Sep 28, 1967
The Enterprise encounters a probe named Nomad.
Who Mourns for Adonais?
aired: Thu, Sep 21, 1967
The Enterprise is held captive by the Greek god, Apollo.
aired: Thu, Sep 14, 1967
Spock undergoes the Vulcan mating ceremony.
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aired: Fri, Apr 14, 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: Fri, Apr 7, 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.
Star Trek: - The Alternative Factor
aired: Fri, Mar 31, 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.
Star Trek: The Original Series - Errand of Mercy
aired: Fri, Mar 24, 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.
Star Trek: - The Devil in the Dark
aired: Fri, Mar 10, 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.
Star Trek: - This Side of Paradise
aired: Fri, Mar 3, 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.
Star Trek: - A Taste of Armageddon
aired: Fri, Feb 24, 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.
Star Trek: The Original Series - Space Seed
aired: Fri, Feb 17, 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.
Star Trek: - The Return of the Archons
aired: Fri, Feb 10, 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.
Star Trek: The Original Series - Court Martial
aired: Fri, Feb 3, 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.
Star Trek: - Tomorrow is Yesterday
aired: Fri, Jan 27, 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.
Star Trek: The Original Series - Arena
aired: Fri, Jan 20, 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.
Star Trek:The Original Series-The Squire of Gothos
aired: Fri, Jan 13, 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.
Star Trek: The Original Series - The Galileo Seven
aired: Fri, Jan 6, 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.
Star Trek: The Original Series - Shore Leave
aired: Fri, Dec 30, 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.
Star Trek: The Original Series - Balance of Terror
aired: Fri, Dec 16, 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?
Star Trek: - The Conscience of the King
aired: Fri, Dec 9, 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.
Star Trek: The Original Series - The Deadly Years
aired: Sat, Dec 9, 1967
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)
Star Trek: - The Menagerie - Part 1
aired: Fri, Nov 18, 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)
Star Trek: - The Corbomite Maneuver
aired: Fri, Nov 11, 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.
Star Trek:The Original Series - Dagger of the Mind
aired: Fri, Nov 4, 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.
Star Trek: The Original Series - Miri
aired: Fri, Oct 28, 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.
Star Trek: - What are Little Girls Made Of
aired: Fri, Oct 21, 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.
Star Trek: The Original Series - Mudd's Women
aired: Fri, Oct 14, 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.
Star Trek: The Original Series - The Enemy Within
aired: Fri, Oct 7, 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.
Star Trek: The Original Series - The Naked Time
aired: Fri, Sep 30, 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.
Star Trek: - Where No Man Has Gone Before
aired: Fri, Sep 23, 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?
Star Trek: The Original Series - Charlie X
aired: Fri, Sep 16, 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.
Star Trek: The Original Series - The Man Trap
aired: Fri, Sep 9, 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.