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.

The Enterprise is sent on a diplomatic mission to one of the protagonists in a 500-year-old space war, only to discover that the starship is itself destined for destruction.

Sent to investigate the mysterious solar system of Murasaki 312 by Captain Kirk, Mr Spock and the crew of his shuttle craft find themselves losing contact with the Enterprise when all communication systems are made inoperable by a mysterious force. Crash landing on the hostile planet of Taurus II, Mr Spock and his crew are attacked by a giant creature bent on destroying them. Is Mr Spock's first command doomed to be his last?

After being accidentally injected with a powerful drug, Dr McCoy flees the Enterprise in a hysterical state and beams down to the desolate planet the ship has been orbiting. Searching for McCoy, Captain Kirk and his landing party discover a mysterious time vortex through which the good doctor has escaped.

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.