The Trellisane Confrontation

The Trellisane Confrontation is a science fiction novel by American writer David Dvorkin, part of the Star Trek: The Original Series franchise.

Plot
The planet Trellisane is the breeding ground for a three-way war. Captain Kirk ends up as a passenger on a Klingon warship. Dr. McCoy is stuck with cannibals. The USS Enterprise is surrounded by Romulans and the Neutral Zone is filled with more danger than ever.