Crystal Soldier - Lee, Sharon, and Miller, Steve

Centuries in the past, mankind fought a seemingly unbeatable adversary across the Spiral Arm until the war ground to a standstill and the Enemy withdrew. Now, the Enemy is back--and this time they'll be satisfied with nothing less than the extinction of the galaxy.

Crystal Soldier 2007, Ace Books, New York, NY

ISBN-13: 9780441014873

Mass-market paperback