When Europol Agent Tom Brindle is called to Barcelona to track down the notorious serial killer known as Pygmalion, he makes a startling discovery, DNA found near the body at the latest crime scene matches a young, volatile soldier, Marco Soler, but further investigation reveals the real killer may actually be Marco's estranged twin brother. Agent Brindle uses Marco to create a psychological profile of his deadly brother, but as he closes on the killer, the killer closes on him. The hunter becomes the hunted as Pygmalion also discovers he has a twin brother and believes to stalk the investigation team. Now, the only way Agent Brindle will catch the killer is to risk everything and everyone he holds dear.