David L. Ross

Kirk and a landing party discover a replica Earth trapped in the year 1960, and inhabited only by children. After learning that a plague has wiped out all the adults, the crew fear that they will become the next victims of the disease.

Mr Spock and the crew fight for survival when their shuttlecraft crash-lands on a barren planet.

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

While investigating the disappearance of the USS Archon on the planet Beta III, Kirk and his crew encounter an old-style Western community brainwashed and subservient to a sinister godlike figure called Landru.

A Federation under-secretary demands special security for a shipment of precious cereal when the Enterprise plays host to Uhura's curious new pet, a tribble.

The crew's loyalty to Kirk dwindles when he returns in an unusually petulant mood from a mission involving an old flame. However, the reaction of the officers seems unnecessarily harsh and the prospect of mutiny looms.