"The Corbomite Maneuver."Stardate 1512.2 The U.S.S. , on a routine star-mapping mission, makes first contact with the spaceship Fesarius of the First Federation. Although Fesarius commander Balok is initially wary of the , presenting a false image, he eventually accepts the assurances of good intentions by personnel after Kirk offers assistance when Balok's ship appears to be disabled. Kirk assigns Lieutenant Bailey to cultural exchange aboard the Fesarius.

A number of women on planet Rigel IV are brutally murdered by an unknown assailant, popularly known as Kesla. The killer is later discovered to be the same energy entity responsible for similar murders a year later on planet Argelius II. The entity is believed to have traveled in the body of Hengist, a native of Rigel IV, hired by the Argelian government as an administrator.

"Mudd's Women" Stardate 1329.8 The attempts to rescue a small Class-J cargo chip that has strayed too close to an asteroid belt. The attempt fails, although the crew of the vessel is successfully beamed aboard the before the smaller ship is destroyed. In the rescue attempt, however, the lithium crystal circuits are damaged, nearly crippling the ship. The captain of the transport, Harcourt Fenton Mudd, is later coerced into assisting Kirk in dealing with lithium miners on Rigel XII to provide crystals to save the from a decaying orbit.

Three women traveling with Mudd, who had apparently been recruited by Mudd as wives for settlers on planet Ophiucus III, elect instead to remain with the lithium miners on Rigel XII.

Harcourt Fenton Mudd is turned over to Federation authorities for illegal operation of transport vessel.

"The Enemy Within" Stardate 1672.1 The U.S.S. on routine geological survey to planet Alfa 177. Magnetic ore contamination from landing party site causes a transporter malfunction, resulting in a partial replication of Captain Kirk. The duplication is nearly perfect, but each copy has only part of the personality traits of the original, thereby threatening the survival of both copies. Science Officer Spock and Engineer Scott successfully modify the transporter to recombine the Kirk to his original form.

Remaining members of the landing party are trapped on the surface of Alfa 177 until the repair of the transporter, resulting in severe frostbite and exposure to those personnel. Upon return to the all landing party members are treated by medical personnel and are given excellent prognosis for a full recovery.

"The Man Trap" Stardate 1513.1 The U.S.S. is assigned to perform routine health examinations of archaeological personnel at planet M-113. An investigation is conducted when three members of the crew is discovered dead on the planet, killed under unknown circumstances. It is learned that the killer is the last specimen of a species indigenous to M-113. The creature, which is later found to possess an unusual hypnotic ability to cause its prey to see it as someone else, is also discovered to live on sodium chloride that it extracts from its victims' bodies. Two additional casualties are discovered on board the , including archaeologist Robert Crater, before the creature is killed while it is attempting to attack Captain Kirk.

Dr. McCoy spills a small amount of acid on a table in his medical laboratory, scarring the table. A year later he notices an identical scar on the same table on the alternate universe of the .

"The Naked Time" Stardate 1704.2 U.S.S. assigned to pick up science team from planet Psi2000. Landing party discovers all researchers to be dead under unusual circumstances, later determined to have been caused by an alien virus. The landing party accidentally brings back the virus to the ship, infecting the Enterprise when the virus causes personnel to lose emotional control. Among those most seriously affected is Lieutenant Kevin Riley, who commandeers the ship's engine room. McCoy develops a serum that enables personnel to regain emotional stability. An emergency restart of the ship's engine using a theoretical intermix formula results in the accidental regression of the Enterprise and all ship's personnel through some 71 hours into the past.

Charles Evans is rescued from the planet Thasus by the crew of the science probe vessel Antares, under the command of Captain Ramart. Evans, a 17-year-old human boy, is the only survivor of a spaceship crash on Thasus some 14 years ago.

"Charlie X" Stardate 1533.6 First contact with mythical Thasians. U.S.S. Enterprise assigned to rendezvous with the spaceship Antares to transport the orphaned Charles Evans to his nearest living relatives on Colony 5. Evans is found to exhibit unusual telekinetic powers, evidence of the existence of the Thasians, previously believed to be purely mythical. Evans eventually returns to Thasus, where his powers, given to him to aid his survival, would not be a threat as they would be in normal human society. Evans is believed to have been responsible for the destruction of the science vessel Antares shortly after its rendezvous with the Enterprise.

"Balance of Terror" Stardate 1709.2 Neutral zone outposts 2 through 4 are reported destroyed in apparent Romulan attack. The Enterprise responds, determining the Romulan action to be a measure of Federation resolve, untested by the Romulans since the establishment of the Neutral Zone a century ago. The Romulan spacecraft, while capable of sublight speeds only, is discovered to be equipped with a cloaking device that can render a ship nearly invisible to sensors, as well as a powerful new plasma energy weapon used to destroy the Neutral Zone outposts. The Enterprise, acting in direct violation of Starfleet orders, enters Neutral Zone under the authority of Captain Kirk and successfully destroys the Romulan ship, thereby repelling a potential Romulan incursion.

The sole casualty aboard the Enterprise is phaser specialist Robert Tomlinson. He is survived by his fiancee, Angela. Their wedding ceremony had been in progress when interrupted by news of the Romulan attack.

An accident aboard an old Class-J starship causes the death of several Starfleet cadets. The toll would have been higher if not for Fleet Captain Christopher Pike, who dragged several cadets to safety. Pike is seriously injured in the incident and is later confined to a wheelchair due to severe delta-ray exposure.

"What Are Little Girls Made Of?" Stardate 2712.4 U.S.S. Enterprise at planet Exo III on a search mission for missing scientist Dr. Roger Korby, fiancee of Enterprise nurse Christine Chapel. Korby is discovered alive, but it is learned he had imprinted his personality into an android body, using ancient alien technology he had discovered on the planet. Also transferred to an android body is Korby's assistant, Dr. Brown. Korby ultimately discovers that the process somehow diminishes his human emotions, and he destroys himself.

Nurse Christine Chapel elects to remain on board the Enterprise. Chapel had given up a promising career in bioresearch to sign aboard a starship in the hopes of someday finding her lost fiancee.

"Dagger of the Mind" Stardate 2751.1 The Enterprise, on a resupply mission to Tantalus V penal colony, accidentally takes on an inmate attempting to escape. The inmate is later discovered to be Dr. Simon Van Gelder, associate director of the rehab colony. Investigation by Kirk and psychiatrist Helen Noel reveals Van Gelder to be suffering from adverse effects of an experimental neural neutralizer device developed by colony director Dr. Tristan Adams. The device, intended for treatment of violent patients, had induced temporary mental disorders in Van Gelder. The device is destroyed , and Van Gelder is apparently promoted to colony director. Dr. Adams is reported to have died as a result of overexposure to the neural neutralizer.

The U.S.S. Enterprise, on a star-charting mission, reports finding seven planets in star system L-370.

"Miri" Stardate 2713.5 The Enterprise responds to a distress call, discovered to be from a Class-M planet virtually identical to Earth. Indigenous humanoid inhabitants determined to be nearly all dead, found to be victims of a disastrous research project whose goal, ironically, was to prolong life. Investigation reveals the only survivors are a group of children, who are discovered to be aging at a rate equivalent to one month for every century of real time. A native child, a young woman named Miri, provides information from which Enterprise personnel determine that these children die upon reaching puberty. The Enterprise landing party, infected with the same disease, is quarantined on planet surface until a viable antitoxin can be developed by Dr. Leonard McCoy.

Federation authorities dispatch a sociological team to help the children on Miri's planet.

Klingon Operatives attempt to influence local politics on Tyree's planet by provinding firearms to the technologically unsophisticated inhabitants.

Enterprise summoned by scientist Dr. Thomas Leighton to planet Q to investigate reports of a new synthetic food process. Because of the hope that this development will end the threat of famine at the Earth colony on planet Cygnia Minor, Kirk orders the Enterprise to divert three light-years off course to meet with Leighton.

"The Conscience of the King" Stardate 2817.6 Kirk learns that Dr. Thomas Leighton's report was an effort to inform Kirk covertly of a suspicion that actor Anton Karidian, currently performing on Planet Q, is in fact the infamous Kodos the Executioner. These allegations are eventually borne out, but not before Karidian's daughter isfound to be responsible for a series of murders, an attempt to eliminate all remaining witnesses of Karidian's crimes 20 years ago. Among Lenore Karidian's victims is Dr. Thomas Leighton, killed shortly after he revealed his suspicions to Kirk. Attempts are also made against James Kirk and Kevin Riley, the last surviving eyewitnesses to Kodos's killings.

The people of Acamar III, having endured generations of clan wars, finally establish peace for nearly all concerned. A significant exception is the outcast nomadic Gatherers, who continue to be a source of violence for a century, raiding many nearby planets and star systems.

A space vessel carrying visitors from planet Ingraham B to planet Deneva carries a deadly parasitic life-form that has already caused mass insanity on Ingraham B over a year ago.

A serious plague threatens the inhabitants of the New Paris colonies. The U.S.S. Enterprise is assigned to transport emergency medical supplies to planet Maku III for transfer to New Paris under the direction of Galactic High Commissioner Ferris.

2267

"The Galileo Seven" Stardate 2821.5 The Enterprise is on an emergency medical supply mission to Makus III. Mission is delayed when shuttlecraft Galileo is lost investigating Muraski 312, a quasar-like phenomenon. Galileo, under command of Science Officer Spock, is later discovered to have crash-landed on planet Taurus II, but attains a suborbital trajectory sufficient for detection by Enterprise sensors before criticality of New Paris mission forces ship to leave the system. Galileo crew members at Latimer and Gaetano are reported killed by indigenous life-forms on Taurus II.

The U.S.S. Enterprise proceeds at warp speed to Makus III to deliver emergency medical supplies for the New Paris colonies.

Stardate 2945.7. The Starship Enterprise encounters ion storm, Records Officer Benjamin Finney is reported killed when sensor pod is ejected.

"Court Martial" Stardate 2947.3 The Enterprise makes and unscheduled layover at Starbase 11 for repairs from ion storm. Kirk is accused of negligent homicide in the death of Ben Finney, but court-martial investigation reveals Finney to be still alive. Kirk, who becomes the first starship captain to stand trial, is exonerated of all charges when it is revealed that Finney had tampered with Enterprise computer records. Kirk's case is prosecuted by Areel Shaw, with Samuel T. Cogley serving for the defense and Commodore Stone presiding. The Enterprise departs Starbase 11.

Spock receives a promotion from lieutenant commander to the rank of full commander.

U.S.S. Enterprise First Officer Spock reports orders for the ship to return to Starbase 11, although no computer record is found of the message.

"The Menagerie, Part I" Stardate 3012.4 The Enterprise arrives at Starbase 11, but investigation by Commodore Mendez fails to reveal source of orders to return to starbase. Further investigation shows the orders to have been falsified by Commander Spock, who kidnaps Fleet Captain Pike, then commandeers the Enterprise to planet Talos IV in violation of General Order 7, which prohibits such contact. Pike had been seriously injured several months prior in an accident aboard a training vessel. Kirk and Mendez, who had been left behind at Starbase 11 when the Enterprise departed, are successful in pursuing the ship aboard a shuttlecraft. Once Kirk and Mendez are aboard the Enterprise, Spock submits himself for arrest, and Mendez orders a general court-martial convened against Spock.

"The Menagerie, Part II" Stardate 3013.1 The Enterprise, en route to Talos IV, is site of court-martial proceedings against Commander Spock on charges of commandeering the Enterprise, sabotage, abduction of Captain Pike, and attempted violation of General Order 7. All charges are dropped when it is determined that Spock had been acting on behalf of the Talosians in the best interests of Captain Pike. Captain Kirk, under special authority from Starfleet Command, permits Captain Pike to accept and offer from the Talosians to live the remainder of his life on their planet, where he need not suffer the infirmities of his injured body.

"Shore Leave" Stardate 3025.3 The U.S.S. Enterprise surveys a newly discovered planet in the Omicron Delta region for possible shore leave. Initial studies suggest a near-idyllic environment, but later reports indicate some highly unusual phenomena. The ship is briefly incapacitated due to crew unfamiliarity with the planet's technology, which is determined to have been built as a vast amusement park.

Enterprise crew personnel (except for Spock) enjoy R&R on the "amusement park planet."

U.S.S. Enterprise on resupply mission to colony on planet Beta VI.

"The Squire of Gothos" Stardate 2124.5 U.S.S. Enterprise bridge personnel are abducted by an unknown alien agency to Gothos, a newly discovered "rogue planet" in a star desert. Investigation reveals the alien to be an entity named Trelane, who is learned to be a child member of an extremely advanced and powerful racewho possess the ability to create and manipulate planets.

A Federation outpost on Cestus III is destroyed by a Gorn spacecraft. The Gorn ship reportedly approached at sublight speeds along standard Federation approach lanes before knocking out the outpost's phaser batteries with their first salvo.

Commodore travers of Cestus III base apparently invites Captain Kirk and senior Enterprise staff to dinner. It is not discovered until later that the message had been falsified by the Gorns, and that the Cestus III outpost had already been destroyed at the time the messages were sent.

"Arena" Stardate 3045.6 The U.S.S. Enterprise arrives at planet Cestus III, discovering the base destroyed by an apparently unprovoked Gorn attack. The Enterprise pursues the attacking vessel, but chase is interrupted by intervention and first contact with the Metrons. The Enterprise crew learns that Gorn hostilities may have been due to the Federation ignorance of boundaries of Gorn space. Ultimately, the Metrons decline to establish diplomatic relations with the Federation.

The Starship Enterprise returns to Cestus III.

Federation miners on planet Janus VI open a new underground level in search of mineral pergium deposits.

"The Alternative Factor" Stardate 3087.6 The U.S.S. Enterprise detects a violent time/space discontinuity while surveying an uncharted planet. Investigation suggests the time/space phenomenon was triggered by Lazarus, a being from our universe, and his mentally unstable counterpart from a parallel continuum composed of antimatter. Their conflict threatens the existence of both universes, but the Lazarus from the alternate universe succeeds in sealing himself and his counterpart in an isolated time pocket.

The U.S.S. Enterprise puts in for general repair and maintenance at Cygnet XIV. The technicians at Cygnet XIV, a society dominated by women, reportedly felt the Enterprise computer lacked character, and gave it a stereotypically female personality.

U.S.S. Enterprise heads toward Starbase 9, but suffers near collision with a black hole. Full reverse warp power is successful in pulling the ship away, but the resulting whiplash effect propels the Enterprise across space and backward in time.

"Tomorrow Is Yesterday" Stardate 3113.2 The Enterprise is accidently thrown back in time to 1969 after a near collision with black hole, where the starship's appearance results in potential disruption of Earth history. This potential disruption is in the form of U.S. Air Force Captain John Christopher, accidentally taken aboard the Enterprise when the ship is sighted as a UFO in Earth's atmosphere Research suggests Christopher's inadvertent abduction would prevent him from fathering a child who, according to records, will lead the first Earth-Saturn probe. Kirk leads a landing party to Earth's surface to avoid altering history before the Enterprise can employ the light-speed breakaway factor to return to present day.

"Return of the Archons" Stardate 3156.2 The U.S.S. Enterprise investigates the loss of th starship Archon, which disappeared near planet Beta III in 2167. Landing party discovers the Archon had been destroyed by a sophisticated computer that acts to protect and provide for the planet's inhabitants. The self-aware computer system, Known as "Landru" to the planet's inhabitants, self-destructs when it realizes it has become harmful to the society it was designed to protect.

Enterprise sociologist Lindstrom, and a team of experts remain on planet Beta III to help the native in habitants, now free of Landru's control, guide their culture back to a more normal form.

The Enterprise heads for star cluster NGC 321 under orders from Federation Ambassador Robert Fox. Thousands of Federation lives have been lost in the region over the past twenty years, and it is hoped that a treaty port can be established at planet Eminiar VII to help avoid future loss of life.

"A Taste of Armageddon" Stardate 3192.1 The U.S.S. Enterprise is warned to remain away from planet Eminiar VII, where the Starship Valiant had disappeared in 2217. Despite a Code 710 forbidding contact, Ambassador Fox orders the Enterprise to make contact with the local planetary government. The ship's crew is declared a casualty in a computerized war with neighboring planet Vendikar, according to Eminiar official Anan Seven. Kirk, acting to protect his ship, causes the war agreement to be abrogated, resulting in both sides suing for peace rather than facing actual armed combat.

"Space Seed" Stardate 3141.9 The Starship Enterprise detects a distress signal from old DY-100 interplanetary space vehicle, adrift near the Mutara sector. Investigation determines the craft to be the S.S. Botany Bay, a sleeper ship carrying refugees from Earth's Eugenics Wars.

One surviving passenger on the ship is identified as Khan Noonien Singh, former dictator of one-quarter of Planet Earth. Captain Kirk renders an administrative ruling permitting Khan and his shipmates to settle on planet Ceti Alpha V. Also choosing to settle on Ceti Alpha V is Enterprise historian Marla McGivers, charged with acting improperly in rendering aid to Khan during an unsuccessful bid to take control of the ship.

"This Side of Paradise" Stardate 3417.3 The U.S.S. Enterprise investigates the Omicron Ceti III colony, believed to be seriously endangered by prolonged exposure to lethal Berthold rays. Medical tests show all colonists to be in perfect health, a phenomenon later found to be due to the effects of a symbiotic alien spore which also protected the colonists from th Berthold rays. The spores also had unusual psychological effects upon their hosts. Enterprise personnel are also affected by these spores but exposure to intense subsonic energy is found to nullify their effects.

Fifty mining personnel on planet Janus VI are killed by a mysterious subterranean entity. The U.S.S. Enterprise is summoned by colony administrator Vanderberg to help investigate the deaths.

"The Devil in the Dark" Stardate 3196.1 The U.S.S. Enterprise arrives at Janus VI pergium Mining Colony to probe mysterious deaths. Investigation determines the deaths to have been caused by a silicon-based indigenous life-form known as a Horta. Further investigation reveals that the Horta to be intelligent and the killings to have been done in self-defense after miners inadvertently damaged the Horta's underground egg chamber when opening a new level three months ago. Peaceful relations are established with the newly discovered life-form.

Negotiations with the Klingon Empire over disputed areas of space are reported in danger of breaking down. Starfleet Command anticipates a possible surprise attack by the Klingons, who have just issued an ultimatum to withdraw from disputed areas. Starfleet learns that the Klingons have invaded the Planet Organia, and orders the Enterprise to intervene.

"Errand of Mercy" Stardate 3198.4 The Starship Enterprise is assigned to prevent an anticipated Klingon incursion at Organia, a planet that is believed to be inhabited by an agrarian humanoid culture of relatively low technical sophistication. This incursion becomes the focal point of the long-simmering dispute between the Federation and the Klingon Empire, threatening to erupt into interstellar war.

Local planetary government declines offer of Starfleet assistance, at which time is the true noncorporeal form of the Organians is discovered. The immensely powerful Organians announce the imposition the Organian Peace Treaty on both the Klingons and the Federation, predicting that the two adversaries would become friends.

"The City on the Edge of Forever" The U.S.S. Enterprise investigates a time/space distortion phenomena, later discovered to be a time portal, an artifact of an ancient dead civilization. While treating helmsman Sulu for injuries suffered during a shipboard mishap, ship's surgeon Leonard McCoy is accidentally injected with an overdose of cordrazine. Suffering from the resulting paranoid delusions, McCoy flees through the time portal, effecting disastrous changes in Earth's history. Kirk and Spock follow in an attempt to undo the damage. While searching for McCoy in the past, Kirk falls in love with a social worker named Edith Keeler. Although Kirk and Spock are ultimately successful in restoring the time continuum, the mission is made infinitely more difficult when Kirk learns that to repair the damage, he must permit the death of Keeler.

"Operation: Annihilate!" Stardate 3287.2 The Starship Enterprise makes an unsuccessful attempt to save the pilot of a small spacecraft on a course directly into the sun of the planet Deneva. Further investigation reveals that the entire population of the Deneva colony (Approximately 1,000,000 individuals) had been infected by a parasite that dominates its host through control of the nervous system.

Among the victims are Kirk's brother, George Samuel Kirk, and his sister-in-law, Aurelan Kirk. They are survived by their son Peter Kirk.

This same parasite, which was apparently of extragalactic origin, was also believed responsible for planetwide infestations in the Beta Portalan system, on planet Lavinius V, and on Ingraham B. McCoy develops a means of eradicating the parasites by exposing them to high levels of ultraviolet radiation. Planetwide treatment of Deneva is effected through the use of 210 ultraviolet satellites placed into orbit around the planet.