 | 1x01 The Man Trap (Air Date: Sep. 08, 1966)
Stardate: 1513.1 When the crew goes to a distant archaeological outpost to conduct routine medical examinations, they find the husband and wife team healthy. However, each of the Enterprise’s ... |  | 1x02 Charlie X (Air Date: Sep. 15, 1966)
Another ship drops off a teenager that they found stranded on a planet, and Enterprise will deliver the boy, “Charlie,” to the next Starbase. Charlie has been without human contact for ... |  | 1x03 Where No Man Has Gone Before (Air Date: Sep. 22, 1966)
When the Enterprise attempts to penetrate the galactic barrier, they are thrown back and one of the crew, Kirk's friend Gary Mitchell, gains godlike powers and threatens the entire ship. ... |  | 1x04 The Naked Time (Air Date: Sep. 29, 1966)
The crew of the Enterprise is infected with a alien compound that alters crewmens' minds and emotions in a way similar to alcohol and is spread by contact. The compound's effects led to ... |  | 1x05 The Enemy Within (Air Date: Oct. 06, 1966)
A transporter malfunction separates Kirk into two people: a kind and gentle vacillitating version, and a strong-willed arrogant Kirk who gives in to his every bestial urge. When the divided ... |  | 1x06 Mudd's Women (Air Date: Oct. 13, 1966)
When their ship is destroyed, a freighter captain and three stunningly beautiful women arrive on the Enterprise. They want Kirk to take them to a mining colony where the women are wanted ... |  | 1x07 What Are Little Girls Made Of? (Air Date: Oct. 20, 1966)
Nurse Chapel is reunited with her fiancée Dr. Roger Korby whom she has not seen in years. But he captures Kirk and they soon discover that he has created a small army of androids and plans ... |  | 1x08 Miri (Air Date: Oct. 27, 1966)
The Enterprise investigates an Earth-like planet and an abandoned city, where they discover the entire planet was wiped out by a disease. The disease strikes at puberty, and the only survivors ... |  | 1x09 Dagger of the Mind (Air Date: Nov. 03, 1966)
The Enterprise crew drop off supplies at a penal colony and pick up a stowaway, a doctor who has gone insane. Kirk investigates and the facility director gives him a look at a neural neutralizer ... |  | 1x10 The Corbomite Maneuver (Air Date: Nov. 10, 1966)
While exploring an unknown sector of space, the Enterprise encounters a gigantic spaceship that immobilizes the Federation starship and threatens to destroy it. With minutes ticking away ... |  | 1x11 The Menagerie Part I (Air Date: Nov. 17, 1966)
Spock kidnaps his former captain and illegally takes control of the Enterprise, forcing a court martial where the events of a fateful mission to Talos IV are revealed. |  | 1x12 The Menagerie Part II (Air Date: Nov. 24, 1966)
Spock and Pike's fate is in jeopardy as Kirk and Mendez learn of Pike's incarceration at the hands of the Talosians years earlier, and how it relates to Spock's theft of the Enterprise. ... |  | 1x13 The Conscience of the King (Air Date: Dec. 08, 1966)
When a friend of Kirk's dies under mysterious circumstances, Kirk suspects a Shakespearean actor of being a mass murderer at a colony where Kirk was during the massacre. Kirk brings the ... |  | 1x14 Balance of Terror (Air Date: Dec. 15, 1966)
A Romulan warbird has crossed the Neutral Zone and attacked Federation outposts with a deadly new weapon, and Spock's loyalties are questioned when a Romulan transmission is intercepted. ... |  | 1x15 Shore Leave (Air Date: Dec. 29, 1966)
The crew of the Enterprise investigate a seemingly serene planet with no life, but then encounter fictional characters and old friends and enemies from their pasts. |  | 1x16 The Galileo Seven (Air Date: Jan. 05, 1967)
McCoy, Scott, Spock, and four other crewmen crashland on a hostile planet while on an exploratory mission in the shuttlecraft Galileo. While the stranded crew attempt to survive against ... |  | 1x17 The Squire of Gothos (Air Date: Jan. 12, 1967)
The crew is captured by Trelane, the Squire of Gothos, who has styled himself and his dwelling on his ouit-of-date observations of Earth. Trelane has almost unlimited power and decides to ... |  | 1x18 Arena (Air Date: Jan. 19, 1967)
After an unknown alien race destroys an Earth colony, Kirk pursues them into unknown space where a third group of aliens, the Metrons, transport him and the alien captain to a deserted planet ... |  | 1x19 Tomorrow is Yesterday (Air Date: Jan. 26, 1967)
After a near-collision with a black star, the Enterprise is thrown back to 20th century Earth. They rescue an Air Force pilot, John Christopher, when his ship breaks up in their tractor ... |  | 1x20 Court Martial (Air Date: Feb. 02, 1967)
Kirk is forced to eject a sensor pod containing a crewman and friend during an ion storm. When he arrives at the next starbase, he discovers he must face a court martial when he is accused ... |  | 1x21 The Return of the Archons (Air Date: Feb. 09, 1967)
The Enterprise travels to a planet that was the last known location of a Federation ship, the Archon, that went missing a century ago. Sulu is "infected" with the peacefulness and Kirk must ... |  | 1x22 Space Seed (Air Date: Feb. 16, 1967)
The Enterprise encounters the SS Botany Bay. She has been in space for centuries, carrying seventy two men and women in suspended animation. Kirk and Spock realize these people are dangerous ... |  | 1x23 A Taste of Armageddon (Air Date: Feb. 23, 1967)
The Enterprise comes across two civilizations that fight a virtual war using computers. Each side's computer simulates losses on the other side, checks with its counterpart, and the "victims" ... |  | 1x24 This Side of Paradise (Air Date: Mar. 02, 1967)
The Enterprise is sent to evacuate a colony which should be dead due to radiation exposure. But the colonists are alive and well and oddly sedate. When Kirk tries to evacuate them, they ... |  | 1x25 The Devil in the Dark (Air Date: Mar. 09, 1967)
The Enterprise goes to a mining colony where 50 workers have been killed by a creature that can move through solid rock. Shortly after Kirk starts investigating, the creature takes a vital ... |  | 1x26 Errand of Mercy (Air Date: Mar. 23, 1967)
War breaks out between the Federation and the Klingon Empire. Spock and Kirk are sent to establish a treaty with the residents of the planet Organia, which occupies a key strategic position. ... |  | 1x27 The Alternative Factor (Air Date: Mar. 30, 1967)
After a dimensional disruption shakes the known galaxy to its very core, the Enterprise is sent to investigate the planet of origin and find a man named Lazarus who claims ignorance. But ... |  | 1x28 The City on the Edge of Forever (Air Date: Apr. 06, 1967)
Dr. McCoy receives an accidental overdose of a powerful medication and becomes dangerously paranoid. He escapes into Earth's past and there changes history in a way that prevents the Federation ... |  | 1x29 Operation -- Annihilate! (Air Date: Apr. 13, 1967)
Colonists on a distant planet are taken over by alien organisms that control their hosts by inflicting pain. Things take a turn for the worse when Spock is infected by one of the organisms ... |  | 1 The Cage (Pilot) (Air Date: N/A)
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 | 2x01 Amok Time (Air Date: Sep. 15, 1967)
Spock is unusually restless and ill-tempered. After he throws a bowl of soup at Nurse Chapel, Kirk insists on an answer and Spock reveals that he is in the early stages of Pon Farr, the ... |  | 2x02 Who Mourns for Adonais? (Air Date: Sep. 22, 1967)
The Enterprise is heading to Pollux 4 on a archeology mission when a large energy field in the shape of a giant green hand stops the Enterprise dead in space. A giant figure appears out ... |  | 2x03 The Changeling (Air Date: Sep. 29, 1967)
The Enterprise responds to a distress call from the planet Mulour, only to find the entire civilization has been destroyed. Then a small probe with incredible weaponry and defense capabilities ... |  | 2x04 Mirror, Mirror (Air Date: Oct. 06, 1967)
The Enterprise is on a mission to convince the Halkan Council to allow the Federation to mine dilithium crystals on their planet. Kirk, Scotty, McCoy, and Uhura beam back up to the planet, ... |  | 2x05 The Apple (Air Date: Oct. 13, 1967)
Kirk and a large landing party beam down to explore the beautiful garden planet of Gamma Trianguli 6. But the planet turns deadly when the party are killed by dart-shooting flowers, exploding ... |  | 2x06 The Doomsday Machine (Air Date: Oct. 20, 1967)
The Enterprise responds to a distress call in the L370 system and discovers that something has destroyed almost every planet in the system. They also find its sister ship the U.S.S. Constellation, ... |  | 2x07 Catspaw (Air Date: Oct. 27, 1967)
A landing party beams down to Pyrus 7 to survey the surface. The Enterprise loses contact with them, then gets a message from one crewman, Jackson, asking to be beamed up. When they do, ... |  | 2x08 I, Mudd (Air Date: Nov. 03, 1967)
The Enterprise is taken over by a new crewman, Mr. Norman, who redirects it to a distant planet. He booby traps the controls and the crew is forced to wait and see where they end up. They ... |  | 2x09 Metamorphosis (Air Date: Nov. 10, 1967)
Kirk, Spock, and McCoy transport an ailing Commissioner Nancy Hedford from Epsilon Caneris 3 to the Enterprise. Their shuttle is intercepted by an ionized hydrogen cloud and forced to land ... |  | 2x10 Journey to Babel (Air Date: Nov. 17, 1967)
The Enterprise is transporting ambassadors and mediators to a conference on the planet Babel. There the delegates will determine if admitting Coridan to the Federation is feasible. While ... |  | 2x11 Friday's Child (Air Date: Dec. 01, 1967)
Kirk negotiates with the highly honor-bound natives of Capella 4 to obtain mining rights. The Klingons interfere in the tribe's politics and attempt to secure their own deal. When the tribe's ... |  | 2x12 The Deadly Years (Air Date: Dec. 08, 1967)
Kirk and a landing party investigate a colony on Gamma Hydra 4 and find that most of the residents have died... of old age. They bring the last few survivors on board the Enterprise where ... |  | 2x13 Obsession (Air Date: Dec. 15, 1967)
Kirk and a landing party beam down to examine tritantium deposits and are attacked by a gaseous creature that feeds on red blood cells. Kirk remembers the creature as one that he fought---and ... |  | 2x14 Wolf in the Fold (Air Date: Dec. 22, 1967)
Scotty, Kirk, and McCoy beam down to Argellius II for shore leave. Scotty becomes attracted to a belly-dancer and goes on a romantic walk with her. Later the belly-dancer is found stabbed ... |  | 2x15 The Trouble with Tribbles (Air Date: Dec. 29, 1967)
The Enterprise goes to Deep Space Station K7 responding to a distress call. After reaching the station, Kirk finds out the distress call to be unwarranted and the Klingons have come there ... |  | 2x16 The Gamesters of Triskelion (Air Date: Jan. 05, 1968)
Kirk, Uhura, and Chekov are kidnapped away from the transported pad as they prepare to beam down to Gamma 2, an uninhabitable plant with an automated station. The party appears on a completely ... |  | 2x17 A Piece of the Action (Air Date: Jan. 12, 1968)
Kirk and the Enterprise try to make contact with the people of Sigma Iotia II who have modeled their culture around the a book “Chicago Mobs of the Twenties” left behind by another Federation ... |  | 2x18 The Immunity Syndrome (Air Date: Jan. 19, 1968)
The Enterprise is redirected to investigate the loss of communication with the Gamma 7A star system. While in route, Spock senses the destruction of a Vulcan manned starship, the Intrepid. ... |  | 2x19 A Private Little War (Air Date: Feb. 02, 1968)
Spock, Bones, and Kirk beam down to a planet whose inhabitants are far less technologically evolved. However, they realize that some of the planet's inhabitants are armed far beyond their ... |  | 2x20 Return to Tomorrow (Air Date: Feb. 09, 1968)
The Enterprise receives a distress call from a planet that is too far away from Earth to have been visited by the Federation. When the Enterprise reaches the planet, a telepathic voice address ... |  | 2x21 Patterns of Force (Air Date: Feb. 16, 1968)
The Enterprise arrives in a planetary system to find missing Federation historian John Gill. They are attacked by a nuclear missile from Ekos, even though that planet didn't have the technology ... |  | 2x22 By Any Other Name (Air Date: Feb. 23, 1968)
An Enterprise landing party beams down to investigate a distress call. Two humans appear and thank Kirk for their speedy response to the distress call. They then demand that Kirk surrender ... |  | 2x23 The Omega Glory (Air Date: Mar. 01, 1968)
While on a routine expedition to Omega 4, the Enterprise arrives to find another starship, the U.S.S. Exeter, in orbit circling the planet. Kirk and a party go to the ship and find it abandoned ... |  | 2x24 The Ultimate Computer (Air Date: Mar. 08, 1968)
Kirk and the Enterprise are ordered to a space station and told to evacuate the crew on the station. Kirk is informed that the Enterprise will be the test vehicle for the M5 Multitronic ... |  | 2x25 Bread and Circuses (Air Date: Mar. 15, 1968)
The Enterprise comes across debris from the Federation scout vessel, S.S. Beagle, that went missing six year earlier. The crew extrapolate the path of the wreckage backwards and finds it ... |  | 2x26 Assignment: Earth (Air Date: Mar. 29, 1968)
The Enterprise has travelled back in time to the year 1968 and are in orbit around Earth. They are monitoring transmissions on a fact-finding mission to see how Earth survived such a terrible ... |
 | 3x01 Spock's Brain (Air Date: Sep. 20, 1968)
A woman from a strange alien ship transports to the Enterprise. She stuns everyone on the bridge with a device on her forearm and takes an interest in Spock. When Kirk and McCoy wake up, ... |  | 3x02 The Enterprise Incident (Air Date: Sep. 27, 1968)
Kirk has been acting irrational lately from the stress of command and orders the Enterprise into the Neutral Zone. Once there, they are quickly surrounded by three Romulan Warbirds and ordered ... |  | 3x03 The Paradise Syndrome (Air Date: Oct. 04, 1968)
The Enterprise is sent to deflect the path of an asteroid that is on a collision course with a Class-M planet. They reach there with enough time to go down to the planet's surface and explore ... |  | 3x04 And the Children Shall Lead (Air Date: Oct. 11, 1968)
The Enterprise is responding to a distress call of the Triacus Science Colony. When they arrive, they find that all but one of the adults have committed suicide. The lone surviver dies shortly ... |  | 3x05 Is There in Truth No Beauty? (Air Date: Oct. 18, 1968)
The Enterprise transports a Medusan ambassador back to his home planet along with two passengers. The Medusans are a race of aliens so vile and ugly that humans who see them go insane. One ... |  | 3x06 Spectre of the Gun (Air Date: Oct. 25, 1968)
The Enterprise comes across a space probe as they go to establish contact with the reclusive Melkotians. The probe warns the Enterprise to immediately leave Melkot space. Kirk tries to contact ... |  | 3x07 Day of the Dove (Air Date: Nov. 01, 1968)
The Enterprise is investigating the distress call of the Earth colony Beta 12A. When they arrive, they find that all 100 men, women, and children are nowhere to be found. Kirk's suspicion ... |  | 3x08 For the World is Hollow and I Have Touched the Sky (Air Date: Nov. 08, 1968)
McCoy tells Kirk that he has become infected with a fatal disease for which there is no known cure. Shortly thereafter the Enterprise is attacked and extrapolates that the attack came from ... |  | 3x09 The Tholian Web (Air Date: Nov. 15, 1968)
The Enterprise investigates the disappearance of its fellow starship the U.S.S. Defiant. Kirk takes a team over and they find the entire crew dead, having killed each other in fits of madness. ... |  | 3x10 Plato's Stepchildren (Air Date: Nov. 22, 1968)
The Enterprise diverts from its current heading and answers a distress call asking for medical attention. When they arrive at the planet Kirk discovers a group of individuals who claim to ... |  | 3x11 Wink of an Eye (Air Date: Nov. 29, 1968)
The Enterprise receives and answers a distress call from the planet Scalos. When the Enterprise reaches Scalos, they are unable to locate the individuals responsible for the signal. An odd ... |  | 3x12 The Empath (Air Date: Dec. 06, 1968)
When the Enterprise arrives at Minara 2 to pick up a two-man science team because the planet's sun is going to supernova. Kirk, Spock, and McCoy find the station abandoned and discover the ... |  | 3x13 Elaan of Troyius (Air Date: Dec. 20, 1968)
The Enterprise goes on a top-secret mission to take Queen Elaan of Elas to neighboring planet Troyius where she has been promised to their ruler. Their union will stop a bloody conflict ... |  | 3x14 Whom Gods Destroy (Air Date: Jan. 03, 1969)
Kirk and Spock are delivering medicine to the metal health facility on Elba II. The asylum is home to the most insane criminal of the Federation. Once there, an inmate tells Kirk and Spock ... |  | 3x15 Let That Be Your Last Battlefield (Air Date: Jan. 10, 1969)
The Enterprise comes across a shuttlecraft taken from Starbase 4 on their way to the planet, Arianis. The alien piloting the shuttlecraft is completely white on one side of his body and ... |  | 3x16 The Mark of Gideon (Air Date: Jan. 17, 1969)
The Federation is attempting to establish relations with the planet, Gideon. Gideon refuses to allow any visitors or sensor scans, but claims to be a complete paradise. After much debate, ... |  | 3x17 That Which Survives (Air Date: Jan. 24, 1969)
A landing party from the Enterprise transport down to investigate a planet that is only the size of the Moon, but has the mass of the Earth. The planet appears to be thriving despite its ... |  | 3x18 The Lights of Zetar (Air Date: Jan. 31, 1969)
While on their way to Memory Alpha, the library of all cultural history and scientific knowledge of the Federation, the Enterprise detects a mysterious storm. The storm is traveling at speeds ... |  | 3x19 Requiem for Methuselah (Air Date: Feb. 14, 1969)
While on a planet in the Omega system trying to find ryetalyn to stop an epidemic of Rigellian Fever, Kirk, Spock and McCoy come into contact with a strange man, Flint, that didn't register ... |
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