Dr. Caroline Kincaid isn't happy that Beck Daggart is back in her life; she's worked hard to erase any memories of him. But she agrees to house her ex-fiancé and vows she can handle it—she needs Beck's help to uncover the mystery behind her father's alleged suicide.

After ten long years of wondering why Caroline Kincaid left him lying comatose in a hospital, Special Agent Beck Daggart goes undercover at his ex's rehabilitation center to expose a killer. Not one to waste an opportunity, Beck plans to stop a maniac and to get answers concerning Caroline's disappearing act.

One stormy night sends Beck and Caroline into each other's arms as lightning ignites their passion in the woods, and sets them up for the fall of a lifetime. As the lovers both struggle with their own demons, Beck and Caroline must join forces just to stay alive, as a psychopathic killer makes them his next targets.