Star Trek: The Original Series

This classic science fiction series, set in the 23rd century, follows the voyages of the starship U.S.S. Enterprise as it explores the endless universe - seeking new life, and new civilizations.

Season 1

S1 E1 - The Man Trap

A shape-shifting, salt-craving creature terrorizes the crew of Enterprise.

S1 E2 - Charlie X

A powerful teenage boy wreaks havoc aboard the U.S.S. Enterprise

S1 E3 - Where No Man Has Gone Before

Kirk's friend, Gary Mitchell, is transformed into a god-like entity.

S1 E4 - The Naked Time

The Enterprise crew catch a virus that removes their inhibitions

S1 E5 - The Enemy Within

A transporter malfunction creates an evil Kirk

S1 E6 - Mudd's Women

The Enterprise rescues con artist Harry Mudd and his "beautiful" female cargo.

S1 E7 - What Are Little Girls Made Of?

Nurse Chapel's long-lost fiancé is found — along with his androids

S1 E8 - Miri

A strange group of children are discovered on an Earth-like planet

S1 E9 - Dagger of the Mind

A new treatment for the criminally insane has deadly results

S1 E10 - The Corbomite Maneuver

Kirk bluffs his way past what appears to be a powerful alien.

S1 E14 - Balance of Terror

After attacking an outpost, Romulans battle the Enterprise

S1 E15 - Shore Leave

On shore leave, the crew's thoughts come to life

S1 E16 - The Galileo Seven

Seven Enterprise crew members go on a shuttle mission with Spock in command

S1 E18 - Arena

Kirk is pitted in a barehanded duel with a Gorn

S1 E19 - Tomorrow is Yesterday

The Enterprise is thrown back to 20th century Earth

S1 E20 - Court Martial

Kirk is recalled for a potential court-martial

S1 E21 - The Return of the Archons

The Enterprise crew finds a world run by a computer named Landru

S1 E22 - Space Seed

Kirk meets Khan, a leader of Earth's Eugenics War

S1 E23 - A Taste of Armageddon

The Enterprise is diverted by two planets fighting a computerized war

S1 E24 - This Side of Paradise

The Enterprise visits a colony where indigenous flower spores provide the settlers with peaceful contentment

S1 E25 - The Devil in the Dark

An unknown monster threatens a mining operation

S1 E26 - Errand of Mercy

Kirk and Spock battle Klingons to free Organia

S1 E28 - The City on the Edge of Forever

Kirk and Spock go back in time to restore history

Season 2

S2 E1 - Amok Time

Spock undergoes the Vulcan mating ceremony

S2 E2 - Who Mourns for Adonais?

The Enterprise is held captive by the Greek god, Apollo

S2 E3 - The Changeling

The Enterprise encounters a probe named Nomad

S2 E4 - Mirror, Mirror

Kirk, Scott, McCoy and Uhura enter a parallel universe

S2 E5 - The Apple

The crew discovers a paradise controlled by computer

S2 E6 - The Doomsday Machine

A machine that destroys planets threatens the Enterprise

S2 E7 - Catspaw

Aliens on a mission of conquest hold the crew captive

S2 E8 - I, Mudd

A takeover leads Kirk to his old nemesis, Harry Mudd

S2 E9 - Metamorphosis

The shuttlecraft Galileo makes a forced landing on a world with a single human inhabitant

S2 E10 - Journey to Babel

Tensions run high when the Enterprise transports ambassadors to the Babel Conferences

S2 E11 - Friday's Child

The Enterprise crew becomes embroiled in a local power struggle on a tribal planet

S2 E12 - The Deadly Years

Accelerated aging affects the senior officers and threatens Kirk's ability to lead

S2 E13 - Obsession

Kirk is determined to hunt down a vampiric entity he failed to destroy in his past

S2 E14 - Wolf in the Fold

Scotty is implicated in a Jack the Ripper-style murder

S2 E15 - The Trouble with Tribbles

The Enterprise is overrun by furry creatures while tangling with Klingons and bureaucrats

S2 E16 - The Gamesters of Triskelion

Three disembodied beings wager on fights staged by prisoners abducted from around the galaxy

S2 E17 - A Piece of the Action

Kirk investigates a planet with an Earth-like 1920s gangster culture.

S2 E18 - The Immunity Syndrome

A giant space amoeba threatens the entire galaxy

S2 E19 - A Private Little War

The Klingons provide arms to a peaceful planet and disrupt the balance of power

S2 E20 - Return to Tomorrow

Telepathic aliens take over Kirk and Spock's bodies

S2 E21 - Patterns of Force

Enterprise is sent to planet Ekos to investigate a disappearance of Federation historian John Gill

S2 E22 - By Any Other Name

Extra-galactic beings commandeer the Enterprise in an attempt to return home

S2 E23 - The Omega Glory

The Enterprise finds a planet devasted by disease that appears to treat the American flag with great reverence

S2 E25 - Bread and Circuses

Spock and McCoy are forced to fight in Roman-like games

S2 E26 - Assignment: Earth

The Enterprise goes back in time and discovers a mysterious stranger trying to interfere with 20th-century events

Season 3

S3 E1 - Spock's Brain

Kirk pursues aliens who have taken Spock's brain

S3 E2 - The Enterprise Incident

Disguised as a Romulan, Kirk steals a cloaking device

S3 E3 - The Paradise Syndrome

Kirk loses his memory and begins a life in a native village

S3 E5 - Is There in Truth No Beauty?

The sight of a Medusan ambassador causes insanity

S3 E6 - Spectre of the Gun

As punishment for trespassing, Kirk and crew are forced to re-enact the shootout at the OK Corral

S3 E7 - Day of the Dove

A malevolent entity pits Klingons against the Enterprise crew

S3 E8 - For the World is Hollow and I Have Touched the Sky

An inhabited asteroid is on a collision course with a Federation planet

S3 E9 - The Tholian Web

Kirk is trapped in interphase, while the Enterprise is trapped by a powerful energy web

S3 E10 - Plato's Stepchildren

Platonians use psychokinetic power to toy with the crew

S3 E11 - Wink of an Eye

Hyperaccelerated aliens, invisible to the naked eye, take over the Enterprise

S3 E12 - The Empath

The landing party is used to test an empathic race

S3 E13 - Elaan of Troyius

Kirk is distracted while the Enterprise is threatened

S3 E14 - Whom Gods Destroy

Kirk is confronted by one of his heroes, now criminally insane

S3 E15 - Let That Be Your Last Battlefield

Two survivors of a devasted planet remain committed to destroying one another

S3 E17 - That Which Survives

A deadly computer image protects a long dead outpost

S3 E18 - The Lights of Zetar

Zetarians threaten Lieutenant Mira Romaine

S3 E20 - The Way to Eden

A charismatic leader and his followers hijack the Enterprise in their search for "Eden"

S3 E21 - The Cloud Minders

Kirk is forced into negotiating peace on a planet with severe class inequities

S3 E22 - The Savage Curtain

Kirk and Spock are forced into a battle of good and evil

S3 E23 - All Our Yesterdays

Kirk, Spock and McCoy enter a time portal and get stuck in the past on a planet about to be consumed by a nova

S3 E24 - Turnabout Intruder

A woman from Kirk's past exchanges bodies with him and takes control of the ship

Clips

Star Trek - They're Humans!

Spock and Captain Pike run into some other humans on the forbidden planet Talos IV planet...and little do they know that they're being watched (The Menagerie - Part 1)

Star Trek - I Have Security Clearance

Spock fights with a crew member and uses fake recordings of Kirk's voice to hijack the Enterprise (The Menagerie - Part 1)

Star Trek - Treachery & Mutiny

Kirk, McCoy and Spock visit a severly injured Captain Pike, but Spock stays behind and mysteriously promises Pike to commit teachery and mutiny (The Menagerie - Part 1)

Star Trek - Primitive vs. Superior

Kirk plays a poker-like bluff with a powerful alien, who insist on demonstrating their superiority (The Corbomite Maneuver)

Star Trek - A Daring Escape

Kirk makes a daring escape, which is followed by a passionate kiss (Dagger of the Mind)

Star Trek - Where's the Captain?

A man enters the bridge of the Enterprise and, at gunpoint, demands asylum (Dagger of the Mind)

Star Trek - Classified Material

The Enterprise crew beams up some classified cargo that a dangerous man stowed away in (Dagger of the Mind)

Star Trek - The Mind of A Child

While exploring an earth-like planet, a distorted human has a seizure and dies after attacking McCoy (Miri)

Star Trek - You're Not Human

Kirk tries to reason with the human side of Nurse Chapel's fiance, Roger, before he and his android are zapped away (What Are Little Girls Made Of)

Star Trek - Nurse Chapel Finally Reunited

Nurse Chapel's long-lost fiance is found - along with his androids (What Are Little Girls Made Of)

Star Trek - Mudd Gets Beamed Up

The Enterprise crew rescues con artist Harry Mudd and his "beautiful" female cargo (Mudd's Women)

Star Trek - We Got to Risk A Full Power Start!

Kirk tries to literally slap Spock into helping him save the ship, but Spock, infected with the virus, can only lament about spending a whole lifetime learning to hide his feelings...until Kirk catches the virus himself (The Naked Time)

Star Trek - Evil Kirk Comes Aboard

A transporter malfunction creates an evil Kirk (The Enemy Within)

Star Trek - Don't Fight Me, Janice

Evil Kirk makes sexual advances on Janice against her will (The Enemy Within)

Star Trek - I Want to Live!

The Enterprise crew finally get rid of evil Kirk using the transporter (The Enemy Within)

Star Trek - Hit With An Electric Charge

Kirk's friend, Gary Mitchell, is struck with an electric charge, turning him into a god-like entity (Where No Man Has Gone Before)

Star Trek - The Unpleasant Alternative of Punishment

The Talosians command Pike to drink the vile given to him, or face the unpleasant alternative of punishment (The Menagerie - Part 2)

Star Trek - Stop This Illusion Or I'll Twist Your Head Off!

Pike fights back and captures one of the Talosians, who threatens to destroy Pike's ship if he's not released (The Menagerie - Part 2)

Star Trek - Romantic Virtual Realities

The Talosians send Pike through romantic virtual realities, hoping they will cause him to mate with Vina (The Menagerie - Part 2)

Star Trek - Kirk Does Some Research

Kirk does research to figure out if Shakespearean actor Anton Karidian is a mass murderer (The Conscience of the King)

Star Trek - The Murder of a Mass Murderer

Kirk is almost killed by Anton Karidian's daughter, but Anton saves his life and is accidentally killed instead (The Conscience of the King)

Star Trek - Some Singing and Some Poisoning

Uhura sings a song to Lieutenant Riley over the intercom system just before Riley is poisoned (The Conscience of the King)

Star Trek - Romulans Attack!

The Enterprise crew speaks with a survivor of the outpost attacked by the Romulans before witnessing first-hand the outpost's total destruction (Balance of Terror)

Star Trek - I Won't Underestimate Them Again

The Enterprise fires at the Romulans (Balance of Terror)

Star Trek - Just An Illusion

The Talosians tell Kirk that the Commodore Mendez was just an illusion and gets word that no action is going to be taken against Spock (The Menagerie - Part 2)

Star Trek - Prepare to Abandon Your Vessel

The Enterprise has destoryed the Romulan ship, but the Romulan captain insists that he and his crew will go down with the ship (Balance of Terror)

Star Trek - Fight to the Death

Kirk fights his former friend, Gary Mitchell, to the death (Where No Man Has Gone Before)

Star Trek - We Don't Belong Here

After the Enterprise crew catch a virus that removes their inhibitions, one crew member rambles angrily how humans don't belong in space and threatens Sulu with a knife (The Naked Time)

Star Trek - Virus

The Enterprise crew catch a virus that removes their inhibitions

Star Trek - Transformation

Kirk's friend, Gary Mitchell, is transformed into a god-like entity

Star Trek - Time Traveling

Kirk and Spock go back in time to restore history

Star Trek - Salt-Craving Creature Attack

A shape-shifting, salt-craving creature terrorizes the crew of Enterprise

Star Trek - Nobody Wants Eve

One of Mudd's women, Eve, runs away into harsh and dangerous conditions after her true appearance is revealed and the men no longer want her (Mudd's Women)

Star Trek - Parallel Universe

Kirk, Scott, McCoy and Uhura enter a parallel universe

Star Trek - Opening Title Sequence

The classic opening title sequence from Star Trek: The Original Series.

Star Trek - DJ Spock

DJ Spock is laying down some sweet beats on the Starship Enterprise.

Star Trek - This Isn't A Game!

Kirk begs the children to give him back the communicators, but has a hard time getting through (Miri)

Star Trek - Space Farts

Something smells foul on the Starship Enterprise...

Star Trek: The Original Series - Greatest Intergalactic Dog

Watch James Kirk and Beth Joy duke it out for the title 'Greatest Intergalactic Dog.' Find out who gets kicked off this week's episode.

Star Trek - Spock Vs Professor Crater

Spock destroys a shape-shifting alien who has over the body of an archaeologist. (The Man Trap)

Star Trek - Radiation At the Tolerance Level!

The Enterprise ship gets shaken up as Kirk commands it to approach a powerful alien being with high radiation levels (The Corbomite Maneuver)

Star Trek - Dead Crew Member on M-113

Kirk and McCoy discover a dead crew member during a routine check-up of a pair of archaeologists on planet M-113 (The Man Trap)

Star Trek - Sailor Talk

Who knew that the crew of The Enterprise had such dirty minds?

Star Trek - Charlie's Fate

A repentant Charlie can't pursuade Thasian to let Charlie stay onboard the Enterprise. (Charlie X)

Star Trek - Charlie X's Anger Issues

Young Charlie X exposes his darker side to Kirk. (Charlie X)

Star Trek - Charlie X, Stalker

Charlie gets spurned by pretty Yeoman Rand and then proceeds to injure Spock. (Charlie X)