Detective Karin Schaeffer was a happily married mother in New Jersey when her life was shattered by a serial killer who murdered her husband and daughter. Martin Price is known to the police as JPP for Just Plain Psycho because of the brutality of his attacks. To the press and the public he is known as The Domino Killer because he systematically murders whole families one by one, after leaving a trail of dominoes as clues.
Now JPP has escaped prison and is on his way to find Karin...but instead of fleeing, she waits for him in her new apartment in Brooklyn. After a failed attempt at suicide she has promised her family she will not try again to take her own life; instead, she will let JPP do it for her. But in the course of the attack she realizes that he won't stop with her but will go on to hunt other members of her family. She changes her mind, fights back and barely escapes.
With the help of her former partner and close friend, Mac MacLeary, she struggles to overcome despair and save her remaining loved ones. Layers peel away, unexpected truths surface and in a startling revelation they discover that JPP does not work alone. Then Karin's young niece vanishes, marking her as the next victim.
Now a child is missing and the bar is raised on the challenge to put a stop to this deadly team. Just as Karin and Mac close in—and as they begin to recognize tender shoots of love for each other—they find themselves in yet another ruthless trap. As the clock ticks on their lives, Karin has only moments to locate her niece, rescue Mac...and save herself.