It's five years since Ed Fagan disappeared, and since then nothing has been heard from the serial killer known as the Night Hunter. Until now. A Dublin newspaper has received a chilling letter claiming to be from Fagan that promises a new reign of terror. But it's not until the body of prostitute Mary Lynch is found that the police become convinced the Night Hunter has returned. Saxon, a former FBI agent, was writing a book about Fagan when he disappeared. She is absolutely certain he can't be responsible this time. So while Detective Chief Superintendent Grace Fitzgerald and her sniff at a cold trail, Saxon has to convince them to look beyond the obvious. But Saxon is running out of time...