Star Trek #16: The Final Reflection by John M. Ford (Very Good, 1984, Pbk, 253 pgs, Pocket Books)

Cover has light wear; pages appear to be unmarked and are age-toned. ISBN 0671473883

Klingon Captain Krenn is a ruthless war strategist. But on a mission to Earth, Krenn learns a lesson in peace. Suddenly he must fight a secret battle of his own. His empire has a covert plan to shatter the Federation. Only Krenn can prevent a war -- at the risk of his own life!