Star Trek (1966–1969)
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The Mark of Gideon 

Kirk beams down to the planet Gideon and appears to find himself trapped on a deserted Enterprise. Spock on the real Enterprise must use his diplomatic skills to deal with the uncooperative inhabitants of Gideon and find the Captain.



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While beaming down to the planet Gideon, Captain Kirk finds himself still in the transporter room. He can find no one on the ship, now apparently abandoned by the entire crew. He does find one other occupant on the Enterprise, a beautiful young woman, Odona, who does not know how she got there. Back on the real Enterprise, Spock tries to deal with Gideon's representatives who claim that Kirk never arrived and claim no knowledge of his whereabouts. Soon, Odona falls deathly ill, which is exactly what the leaders of Gideon were hoping for. Spock soon realizes that there is problem with the beam down coordinates they were provided. Written by garykmcd

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TV-PG | See all certifications »


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Release Date:

17 January 1969 (USA)  »

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Aspect Ratio:

1.33 : 1
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Did You Know?


Remarkably, this episode did not run afoul of NBC censors, despite Kirk broaching such sensitive matters as sexual sterilization and birth control. See more »


When Spock confronts the Gideon guards, the second guard swings at him--obviously missing his face (in spite of the sound effect). Then Spock throws the guard to the floor with enough force, incredulously, to be rendered unconscious. See more »


[first lines]
Captain James T. Kirk: [narrating] Captain's Log, stardate 5423.4: We are orbiting the planet Gideon, which is still not a member of the United Federation of Planets. The treaty negotiations have been difficult because Gideon has consistently refused the presence of a delegation from the Federation on its soil or any surveillance by the ship's sensors. They have finally agreed to a delegation of one. They insisted it be the captain of the Enterprise. I am, therefore, beaming down at once.
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Edited into Star Trek: The Next Generation: Relics (1992) See more »

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User Reviews

Population 'bomb
8 May 2014 | by (United States) – See all my reviews

This episode has so many holes. Kirk beams down to the surface of a planet, or so he thinks. He finds himself on what appears to be the Enterprise. But there is no crew. After a thorough investigation of the ship he is suddenly face to face with a young woman. She claims she does not know why she is there. Meanwhile, on he real Enterprise, Spock and the gang are trying to negotiate the ability to beam down and look for the Captain. Unfortunately, the officials on the planet refuse to allow this. Kirk, who despite being in grave danger, can't control his hormones and has contact with the young woman. After their tryst Kirk sees faces on the viewing screen. A group of people wearing some kind of hoodie. It turns out that this is a planet where people no longer die (unless they grew extremely old) and they have only to wander the planet, no room, like they were stuck in Time Square on New Year's Eve. The hope is that Kirk will infect the young woman and she will in turn bring disease to the population, decreasing it through mass death. It's unfortunate that there is no satisfactory resolution. I guess it is a lesson in population control.

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