| ep# | episode name | air-date | synopsis |
|---|---|---|---|
| 100 | Cage, The | orig unaired | pilot// spock had been under capt pike's command before kirk// when requested he defies orders and returns to talusia with pike on-board |
| 101 | Man Trap, The | 9/8/1966 | salt-monster //disguised as mccoy's old flame dr. nancy crater// it can appear as anyone, long enough to get your "salt"// bodies pile up |
| 102 | Charlie X | 9/15/1966 | when a young boy is found,(after a spaceship crash his parents died and he had been raised by aliens, ) the crew welcome him, but his values are not human |
| 103 | Where No Man Has Gone Before | 9/22/1966 | . Warnings from the rediscovered Valiant's recorder-marker bear out when Gary Mitchell, Kirk's second officer and best friend, begins mutating into a godlike superbeing (gary lockwood) |
| 104 | Naked Time, The | 9/29/1966 | on Psi 2000, the Enterprise is doomed along with the planet by an alien disease, which acts as intoxicant.//mccoy tries to create an antidote |
| 105 | Enemy Within, The | 10/6/1966 | |
| 106 | Mudd's Women | 10/13/1966 | another run-in with the rascal captain mudd// this time he has an army of androids serving him as master |
| 107 | What are Little Girls Made of? | 10/20/1966 | The Enterprise arrives in orbit around Exo III, to search for exobiologist Dr. Roger Korby. |
| 108 | Miri | 10/27/1966 | The Enterprise answers an old distress signal to find an unnamed planet that is almost an exact duplicate of Earth in the 1960's. |
| 109 | Dagger of the Mind | 11/3/1966 | Dr. Simon van Gelder, part of the psychiatric staff at the Tantalus Penal Colony escapes to the Enterprise, exhibiting signs of manic insanity |
| 110 | Corbomite Maneuver, The | 11/10/1966 | |
| 111 | Menagerie, The | 11/17/1966 | The Enterprise and her crew are diverted by a signal from the former captain of the Enterprise on Starbase 6, and proceed to the call. |
| 112 | Menagerie, part 2 | 11/24/1966 | |
| 113 | Conscience of the King, The | 12/8/1966 | Kirk suspects that Anton Karidian, the head actor in a theater troupe, is really "Kodos the Executioner" |
| 114 | Balance of Terror | 12/15/1966 | |
| 115 | Shore Leave | 12/29/1966 | A Enterprise landing party beams down to an uncharted planet which seems like a perfect candidate for shore leave with it's "Earth-type" characteristics. |
| 116 | Galileo Seven, The | 1/5/1967 | On its way to deliver medical supplies to plague-ridden Hansen's Planet, the Enterprise passes Murasake 312.// McCoy, Spock, Scott and four crewmen take a shuttlecraft, the Galileo, for a closer look. |
| 117 | Squire of Gothos, The | 1/12/1967 | The Enterprise must cross an empty sector of space on their way to supplies to Colony Beta VI. In this space, they find an uncharted planet whose presence can't be explained. |
| 118 | Arena | 1/19/1967 | The Enterprise is in pursuit of an unknown alien ship which has destroyed a Starfleet base on Cestus III. // both the alien ship and the Enterprise are caught by an advanced race called Metrons. |
| 119 | Tomorrow is Yesterday | 1/26/1967 | When the Enterprise is thrown into a time warp by a black star, it ends up orbiting Earth in the 20th century. |
| 120 | Court Martial | 2/2/1967 | When the Enterprise puts in at Starbase 11 for repairs caused in an ion storm, Kirk gives his report of the circumstances of Lt. Comm. Ben Finney death to Commodore Stone. |
| 121 | Return of the Archons, The | 2/9/1967 | The Enterprise is investigating Beta III, where the U.S.S. Archon disappeared over 100 years before. |
| 122 | Space Seed | 2/16/1967 | one of history's great puzzles falls into place when Kirk's crew comes across the S.S. Botany Bay. The ship contains Khan Noonian Singh, one of the leaders of Earth's Eugenics War. |
| 123 | Taste of Armageddon, A | 2/23/1967 | The Enterprise is ordered to pick up Ambassador Robert Fox, who is headed to planet Eminiar VII on a diplomatic mission.Upon arriving at the planet, the ship is warned away. |
| 124 | This Side of Paradise | 3/2/1967 | Expecting the colonists of Omicron Ceti III to be dead after three years of exposure to deadly Berthold rays, Kirk and Spock are surprised to find the colony alive and flourishing. |
| 125 | Devil in the Dark, The | 3/9/1967 | The Enterprise arrives to investigate reports of an unknown monster deep in the mining tunnels of Janus VI. |
| 126 | Errand of Mercy | 3/16/1967 | Kirk and Spock beam down to the surface of planet Organia to negotiate for the erection of a Federation base. |
| 127 | Alternative Factor, The | 3/23/1967 | While orbiting what should be a dead planet, the Enterprise experiences a moment of "nonexistence." Starfleet Command fears an enemy invasion |
| 128 | City on the Edge of Forever, The | 4/6/1967 | Doctor McCoy leaps through a living time machine called "The Guardian of Forever." At that moment, the U.S.S. Enterprise ceases to exist and the landing party is stranded. |
| 129 | Operation- Annihilate | 4/13/1967 | Arriving at the planet Deneva the Enterprise picks up a transmission from a Denevan pilot who has steered his craft into the sun to destroy some unknown menace. |
| 201 | Amok Time | 9/15/1967 | When Spock begins to exhibit strange, erratic behavior, Kirk asks McCoy to conduct a medical examination. McCoy concludes that Spock is experiencing a potentially lethal internal distress. |
| 202 | Who Mourns for Adonais? | 9/22/1967 | As the Enterprise nears the planet Pollux IV, a huge, green hand made of energy materializes in space, catching the Enterprise and holding it captive. |
| 203 | Changeling, The | 9/29/1967 | The Enterprise is sent to investigate the destruction of the Malurian System and its four billion inhabitants. |
| 204 | Mirror, Mirror | 10/6/1967 | Scotty beams the landing party aboard as a burst from the storm hits the starship. The transporter malfunctions, sending Kirk, McCoy, Scotty and Uhura into an alternate universe. |
| 205 | Apple, The | 10/13/1967 | When a landing party beams down to the planet Gamma Trianguli VI, they find what appears to be an idyllic paradise. |
| 206 | Doomsday Machine, The | 10/20/1967 | Sent to investigate the destruction of several planetary systems, the Enterprise discovers a crippled starship, the U.S.S. Constellation, floating in space. |
| 207 | Catspaw | 10/27/1967 | On the planet Pyris VII, two beings known as Korob and Sylvia have been sent on a mission of conquest by their home world. |
| 208 | I, Mudd | 11/3/1967 | An android pretending to be a member of the Enterprise crew, takes control of the starship and her crew// Kirk discovers an old nemesis... Harry Mudd. |
| 209 | Metamorphosis | 11/10/1967 | Assistant Federation Commissioner Nancy Hedford has become ill while trying to stop a war on Epsilon Canaris III. The shuttlecraft Galileo is assigned to take her to the Enterprise |
| 210 | Journey to Babel | 11/17/1967 | The Enterprise is appointed to transport ambassadors from many worlds to the Babel Conferences.Among those aboard are Ambassador Sarek of Vulcan and wife, Amanda... Spock's parents. |
| 211 | Friday's Child | 12/1/1967 | Sent to the planet Capella IV , Kirk and a party beam to the surface and find that a Klingon agent, Kras, has gotten there before them and established an agreement with some of the planet's rebels. |
| 212 | Deadly Years, The | 12/8/1967 | The Enterprise stops to deliver supplies to the colonists of Gamma Hydra IV. They find that accelerated aging has taken place, killing most of the colonists. |
| 213 | Obsession | 12/15/1967 | Eleven years ago, the U.S.S. Farragut encountered a deadly cloud creature with vampire-like tendencies.Kirk encounters what he believes is the same blood-sucking entity. |
| 214 | Wolf in the Fold | 12/22/1967 | Scotty is accused of killing a young dancer from a nightclub on the planet Argelian. |
| 215 | Trouble With Tribbles, The | 12/29/1967 | little cute creatures multiply like--TRIBBLES!!// the ship is overrun, threatening the mission they are on// all the grain is being eaten |
| 216 | Gamesters of Triskelion, The | 1/5/1968 | During a routine transport to a planet, Captain Kirk, Lieutenant Uhura and Ensign Chekov are intercepted and abducted by a powerful and distant transporter beam. |
| 217 | Piece of the Action, A | 1/12/1968 | a case for the Prime Directive: Sigma Iotia II, where the humanoid natives have such a drive for mimicry//history of gangland Chicago left by the USS Horizona a century ago changed history. |
| 218 | Immunity Syndrome, The | 1/19/1968 | Bound for shore leave after a particularly difficult mission, the Enterprise receives an emergency rescue call. Contact has been lost with system Gamma 7A and Starbase 6 wants Kirk to check it out |
| 219 | Private Little War, A | 2/2/1968 | The Enterprise is sent to the planet Neural to gather vegetation samples, were years ago, Kirk had headed a planetary survey and became friends with one of the planet's leader, Tyree. |
| 220 | Return to Tomorrow | 2/9/1968 | Responding to a hail from an ancient, unpopulated world, Kirk beams into a chamber where ancient essences are preserved. Using the captain as a host the alien asks to build androids for his companions |
| 221 | Patterns of Force | 2/16/1968 | the Enterprise is attacked with a thermonuclear missile. According to Federation surveys, the culture on Ekos should not be able to support that kind of technology. |
| 222 | By Any Other Name | 2/23/1968 | |
| 223 | Omega Glory, The | 3/1/1968 | the Kohms and the Yangs are fighting to the death on their world// politics by star command are in dispute--longevity question |
| 224 | Ultimate Computer, The | 3/8/1968 | the automated M-5 is designed to replace living crews on starship -- and it seems posed to do just that, relegating Kirk to a relic. Then trouble looms |
| 225 | Bread and Circuses | 3/15/1968 | The Enterprise finds the wreckage of the S.S. Beagle, with no survivors, orbiting near the Planet 892-IV. |
| 226 | Assignment: Earth | 3/29/1968 | Sent back in time to find out how Earth managed to survive without destroying itself, the Enterprise inadvertently beams aboard a space traveler,Gary Seven and his black cat,Isis |
| 301 | Spock's Brain | 9/20/1968 | a group of aliens beam aboard enterprise and steal spock's actual brain to man the "super computer" which runs their world |
| 302 | Enterprise Incident, The | 9/27/1968 | |
| 303 | Paradise Syndrome, The | 10/4/1968 | Kirk becomes separated from his party and succumbs to amnesia, awakening to be proclaimed the tribe's god after the "miracle" of him reviving a drowning child. |
| 304 | And the Children Shall Lead | 10/11/1968 | |
| 305 | Is There in Truth no Beauty? | 10/18/1968 | |
| 306 | Spectre of the Gun | 10/25/1968 | Kirk ignores an alien buoy that warns the Enterprise that it is trespassing into Melkotian space// gunfight at the OK corrall ensues |
| 307 | Day of the Dove, The | 11/1/1968 | |
| 308 | For the World is Hollow, and I Have Touched the Sky | 11/8/1968 | |
| 309 | Tholian Web, The | 11/15/1968 | The Defiant is a sister ship trapped in an interphase of overlapping universes, its crew dead from mass insanity induced by the distorted subspace |
| 310 | Plato's Stepchildren | 11/22/1968 | McCoy's mercy mission to aid an ailing colony leader uncovers the sadistic Platonians: 38 refugees from a doomed world// strong telekinetic powers and sadistic tendencies abound |
| 311 | Wink of an Eye | 11/29/1968 | Kirk is held hostage aboard his own ship thanks to the Scalosians, a race who exist at a rate so accelerated they appear invisible |
| 312 | Empath, The | 12/6/1968 | doc is chosen to be part of an experiment// the aliens put an empath in with the crew, to see if she will sacrifice herself to help others |
| 313 | Elaan of Troyius | 12/20/1968 | Two UFP members, Elas and Troyius, suffered war for centuries. With Klingon Empire expansion approaching, the Federation sends the Enterprise to help make peace . |
| 314 | Whom Gods Destroy | 1/3/1969 | cure has been discovered that should fully reverse the mental illness of one of Starfleet's greatest warriors, Captain Garth, now at the Elba II penal colony for the insane |
| 315 | Let That be Your Last Battlefield | 1/10/1969 | |
| 316 | Mark of Gideon, The | 1/17/1969 | |
| 317 | That Which Survives | 1/24/1969 | a mysterious "woman" appears around the ship, killing with a touch// only one may be "touched" at a time |
| 318 | Lights of Zetar, The | 1/31/1969 | |
| 319 | Requiem for Methuselah | 2/14/1969 | In search of pure ryetalyn to help cure a plague, the Enterpriseencounters the enigmatic recluse Flint and his ward Rayna Kapec on a small planetoid in the Omega system. |
| 320 | Way to Eden, The | 2/21/1969 | a circle led by the enigmatic Dr. Sevrin, a onetime engineer obsessed with locating the mythical planet Eden as a cure for the fatal disease he acquired from his high-tech lifetime// hippies w/mission |
| 321 | Cloud Minders, The | 2/28/1969 | |
| 322 | Savage Curtain, The | 3/7/1969 | abe lincoln appears //surak, a vulcan icon appears, too//the excalibans are doing an experiment with pitting "good " against "evil"// the effects may be permenent! |
| 323 | All Our Yesterdays | 3/14/1969 | a race whose sun is about to go supernova escape thru time to places in their planet's past// mariette hartley guests |
| 324 | Turnabout Intruder | 6/3/1969 | Janice Lester, a onetime love interest of Kirk, has grown so bitter over her rejection from the Academy that she blames sexism as the reason she washed out of the program. //she swaps bodies with kirk |
