A series of disturbing murders in Blackpool, England puts Detective Rosalind Kray on the path of a serial killer in this crime thriller series finale.

A body washes up on a Blackpool beach, tortured and shot through the head. A man is found in an alleyway with his throat ripped open. A woman is murdered in a hospital bed. What connects them? Only Billy Ellwood knows. Since his disappearance eight years ago, Billy has lived in his own private hell—a hell he imparts on his victims before disappearing once gain into the shadows of Blackpool.
After years of personal turmoil, Detective Inspector Rosalind Kray is finally seeing a chance at happiness with her new boyfriend Millican. But her boss, DCI Dan Bagley, is hell-bent on making her life miserable. As Kray struggles to connect the dots of her latest baffling case, a devastating discovery rocks her world to the core. Because this is no ordinary killer she's up against. He has his own twisted principles . . . and he always keeps his promise.