When a bundle of unidentified body parts tumbles out the rear door of a van on a Los Angeles freeway, FBI agent Scott Houston knows just where to go for an off-the-record analysis: Agency 32/1, a non-profit missing persons identification resource center run by forensic anthropologist Jayne Hall and Steelie Lander.

Sergeant Amy Callan and Lieutenant Caroline Cook have a lot in common. High-flying army career women, both are victims of sexual harassment from their superiors; both are forced to resign from the service. And now they're both dead. Their unmarked bodies are discovered in their own homes, naked, in baths filled with army-issue camouflage paint. Expert FBI psychological profilers start to hunt for a serial murderer, a smart guy with a score to settle,...