Five years ago, Dean Harper finally escaped hell. His marriage to Katie Vaughn had been a slow-motion nightmare that ended only when he caught her cheating and she snapped. Katie's attack landed her in prison. Dean's freedom cost him everything.

Now thirty-four and rebuilding his life, Dean has a steady job, a quiet home, and a woman who makes him believe in love again. Candice Rowan is kind, patient, and everything Katie pretended to be. For the first time in years, Dean dares to breathe easy.

Until the messages start. A photo left on his truck. A package with no return address. A text that reads, "He's mine."

When Candice's car is run off the road by a driver matching Katie's description, Dean's fragile peace shatters. But Katie's supposed to be behind bars... right?

What follows is a descent into paranoia and terror as Dean discovers the truth... Katie's been released early, and she's coming for him. Her obsession has curdled into something unrecognizable, something far deadlier than before.

Trapped between his past and present, Dean must fight not only for his life, but for the woman he loves - before Katie's twisted devotion destroys them both.