Karin Schaeffer thought she had already defeated evil. But there was more.

Three years ago, Detective Karin Schaeffer wanted to die when a madman murdered her family—and she would have if her partner, Mac MacLeary, hadn't pulled her back from the edge of the abyss. Now they are married, with a toddler son, and Karin is learning to live again.

Then Mac's parents are slain in a brutal home invasion . . . And Mac vanishes . . . And a new nightmare begins.

Karin is determined to do whatever it takes to find her husband. But the answers waiting for her in the shadows are almost as unbelievable as his disappearance. Karin pursues the truth—leading her away from her home in Brooklyn to the terrifying heart of the Mexican drug wars to Cape Cod in winter—as dark secrets about the man she loves are revealed. . . .