A London detective finds himself working a serial murder case. The killer's unique method sees his victims, believing they have the chance to live, each answer a series of questions whilst attached to a lie detector. All they have to do is tell the truth. It soon becomes apparent that James is the key to everything. Someone is trying to send him a message, but who? His investigations soon take him to New York to solve the case, but with the killer seemingly following him there, he finds himself in a race against time to unmask the murderer. With his wife pregnant with their first child, he has everything to lose.