Bill Blackburn

After landing on planet M-113, the Enterprise is stalked by a creature which can assume the shape and form of anyone it chooses and which kills by removing the entire salt content of its victims' bodies.

While investigating the deaths of a research team on Psi 2000, the Enterprise is infected with a virus that causes crew members to behave irrationally.

As the crew of the Enterprise stand by for some well-deserved rest and recreation on a planet resembling Earth, the landing party beamed down to prepare the way find themselves experiencing some distinctly unearthly happenings.

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

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.

Kirk discovers a Garden of Eden where life seems idyllic, but where the innocent inhabitants slavishly follow Vaal, the ruler.