Star Trek 9

Ninth in a series of Star Trek: The Original Series episode adaptations. Includes six stories: Return To Tomorrow, The Ultimate Computer, That Which Survives, Obsession, The Return Of The Archons, The Immunity Syndrome.

(from the back cover)

Explore the outer reaches with the Enterprise and her crew as they exchange bodies with an alien intelligence; engage in deadly war games; pursue a vaporous creature to a desolate planet; and probe a fearsome zone of darkness that threatens to destroy them all.