Eddie Paskey

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.

Two crew members develop god-like ESP capabilities when the Enterprise passes through the edge of the galaxy while searching for the Valiant.

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.

A transporter malfunction causes a double of Captain Kirk to appear - one that embodies his wild, negative side.

When Spock begins to act illogically, Captain Kirk is astounded to discover the cause of his strange behaviour: the Vulcan is literally dying to get married. Accompanying Spock to his home planet, Kirk witnesses an ancient wedding ritual, but finds that being best man is not without its dangers.

When the Enterprise encounters a mysterious spacecraft, Captain Kirk is forced to bluff his way out of a dangerous situation.