By 
The Klingon Gambit by Robert E. VardemanCaptain Kirk and his crew are ordered to Alnath II to challenge the deadliest Klingon starship Terror. A defenseless Vulcan crew of a Federation science ship has been wiped out and the remaining members of the Alnath II mission have discovered a fabulous ancient city, except that their report doesn’t make sense.
Soon Captain Kirk cannot make decisions, Spock starts to throw temper tantrums, and Chekov has disobeyed vital orders.
The crew of the Enterprise are losing their minds.
