When radio presenter Casey Fallon answers the call, she assumes it's a prank. But then a woman's body is discovered, and she finds herself up against a cruel and calculating killer who wants her to find his victims before they take their last breath. Fifteen years ago, Casey was a key witness in the trial of serial killer Steve Noakes, and her evidence helped put him behind bars for the murders of five women. Someone remembers what happened that summer—someone who is desperate for revenge, someone who won't stop until Casey has been punished...