John Winston

A derelict spaceship, bearing the survivors of a past civilisation held in suspended animation, drifts into the path of the USS Enterprise.

The Enterprise is forced to defend itself when it is mistaken as a UFO.

Capt Kirk discovers a time vortex while searching for Dr McCoy.

A transporter malfunction sends Capt Kirk and his party to a cutthroat parallel universe, where Enterprise officers advance through assassination.

The Enterprise encounters a vast mechanical monster in space, which is set on a path of destruction so that whole worlds are threatened.

Capt Kirk faces double trouble when the USS Enterprise becomes trapped in a cosmic cauldron and a landing party sent to Pirus VII become the `guests' of Korob and Sylvia, weavers of magic spells.