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Star Trek Episode Guide

Season 3

Spock's Brain

 S3 E1 ● 1968-Sep-20
The U.S.S. Enterprise is on a routine mission in deep space when a beautiful young woman beams onto the bridge, touches a band on her wrist, rendering everyone unconscious. When the crew awaken...

The Enterprise Incident

 S3 E2 ● 1968-Sep-27
Seeming tense and erratic, Captain Kirk takes the U.S.S. Enterprise into Romulan space and the ship is immediately surrounded by Romulan warships. Kirk and Spock beam aboard the Romulan flag-sh...

The Paradise Syndrome

 S3 E3 ● 1968-Oct-04
Investigating a planet in danger of collision with an asteroid, Kirk, Spock, and McCoy discover Native American inhabitants and a strange alien obelisk. While examining the obelisk, Kirk is accidental...

And the Children Shall Lead

 S3 E4 ● 1968-Oct-11
When the U.S.S. Enterprise finds that all the adults in the Starnes Expedition to Triacus have killed themselves, they beam to the planet's surface to investigate. The children, however, are al...

Is There in Truth No Beauty?

 S3 E5 ● 1968-Oct-18
In an attempt to adapt Medusan technology to Federation use, and vice versa, the U.S.S. Enterprise picks up Medusan ambassador Kollos, instrument specialist Laurence Marvick and telepath Dr. Mi...

Spectre of the Gun

 S3 E6 ● 1968-Oct-25
Kirk ignores an alien buoy that warns the U.S.S. Enterprise that it is trespassing into Melkotian space and continues forward when the Melkots transport Kirk, Spock, McCoy, Scotty, and Chekov t...

Day of the Dove

 S3 E7 ● 1968-Nov-01
A U.S.S. Enterprise landing party beams to a human-colonized planet in answer to a distress call. A Klingon ship, apparently damaged, is detected and a group of Klingons accuse Kirk of having d...

For the World is Hollow and I Have Touched the Sky

 S3 E8 ● 1968-Nov-08
At the same time McCoy discovers that he has a year to live, the U.S.S. Enterprise encounters an asteroid which is determined to be artificially propelled. Kirk leads Spock and McCoy on a landi...

The Tholian Web

 S3 E9 ● 1968-Nov-15
The U.S.S. Enterprise arrives in an uncharted area of space to answer a distress call from the U.S.S. Defiant. The starship is visible on their viewscreen, but sensors say it's not there...

Plato's Stepchildren

 S3 E10 ● 1968-Nov-22
When the U.S.S. Enterprise receives a distress call from the planet Platonius, Kirk, Spock and McCoy beam down to the planet's surface. There they find the planet's leader, Parmen, with a badly...

Wink of an Eye

 S3 E11 ● 1968-Nov-29
When a landing party investigating Scalos begins to vanish one by one, Kirk, Spock and McCoy try to find out what is happening before more of the crew disappears, until Kirk himself is abducted. Kirk ...

The Empath

 S3 E12 ● 1968-Nov-06
The U.S.S. Enterprise arrives to pick up research personnel on the second planet of the star Minara. While Kirk, Spock and McCoy are on the surface, they are captured by the Vians and find them...

Elaan of Troyius

 S3 E13 ● 1968-Dec-20
Two United Federation of Planets members, Elas and Troyius, suffered war for centuries. With Klingon Empire expansion approaching the planets' system, Tellun, the Federation sends the U.S.S. Enterp...

Whom Gods Destroy

 S3 E14 ● 1969-Jan-03
The U.S.S. Enterprise is bringing a new medicine to the mental hospital on Elba II with which they hope to eliminate mental illness forever. When Kirk and Spock beam down to the facility of 15 ...

Let That Be Your Last Battlefield

 S3 E15 ● 1969-Jan-10
The U.S.S. Enterprise intercepts a stolen Federation shuttlecraft which contains a humanoid named Lokai, who is half black and half white, starkly separated down the middle of his body. Taken a...

The Mark of Gideon

 S3 E16 ● 1969-Jan-17
The United Federation of Planets sends the U.S.S. Enterprise to Gideon, in the hope that the Gideons will become a member. The planet Gideon appears to be a haven — the inhabitants are healthy...

That Which Survives

 S3 E17 ● 1969-Jan-24
As a landing party prepares to beam down to a previously unexplored Class-M planet, a beautiful woman appears in the transporter room and kills an ensign with a touch. Already dematerializing in the t...

The Lights of Zetar

 S3 E18 ● 1969-Jan-31
The U.S.S. Enterprise's mission is to take Lieuenant Mira Romaine to Memory Alpha, the central library for the United Federation of Planets, where she will supervise the transfer of new equipme...

Requiem for Methuselah

 S3 E19 ● 1969-Feb-14
Rigellian fever, an extremely deadly plague, strikes the U.S.S. Enterprise crew. Kirk, Spock and McCoy beam down to a supposedly uninhabited planet, Holberg 917-G, in search of the only known a...

The Way to Eden

 S3 E20 ● 1969-Feb-21
Chasing the stolen vessel Aurora, the U.S.S. Enterprise rescues the thieves just before the Aurora is destroyed. The group is led by Dr. Sevrin in a search for a mythological plan...

The Cloudminders

 S3 E21 ● 1969-Feb-28
The U.S.S. Enterprise comes to the planet Ardana to acquire zienite, a rare mineral needed to stop a planet-wide plague on Merak II. The zienite is not available, however, because the miner cla...

The Savage Curtain

 S3 E22 ● 1969-Mar-07
The U.S.S. Enterprise is scanned by a powerful energy source coming from the planet Excalbia. The starship had been sent to survey the planet, but it was thought to consist of nothing but a lav...

All Our Yesterdays

 S3 E23 ● 1969-Mar-14
The crew of the U.S.S. Enterprise investigate the planet Sarpeidon whose sun is soon to go nova. Upon beaming to the surface, Kirk, Spock, and McCoy discover the inhabitants gone and a library ...

Turnabout Intruder

 S3 E24 ● 1969-Jun-03
On their way to Beta Aurigae, the U.S.S. Enterprise receives a call for help from Camus II. The landing party finds only Dr. Janice Lester and Dr. Coleman, who claim that the everyone else was ...