While investigating the destruction of the fleet by a flying saucer, Nelson and Kowalski are captured by aliens. One of the aliens offers help to the Seaview crew to stop ...

After the arrival of a newly elected U.S. Senator to inspect Admiral Nelson's new weapon, strange things begin to happen, culminating with the realization that everyone o ...

Admiral Nelson becomes involved in a project to develop an amphibian adaption for man. He encounters conflict with the two chief scientists, rather than being cautious, b ...

While completing the autopsy of a construction worker who fell to his death Quincy spots some unusual abnormalities. He gets Sam to run some further tests to see if there ...

The Enterprise is ordered to pursue a group of anti-establishment idealists who have stolen a space cruiser and made off for the mythical planet Eden. When the group push ...

The Enterprise searches the reportedly primitive and warlike planet, Ekos, for the missing Federation cultural observer, Professor John Gill (David Brian). When Kirk (Wil ...