August 2006. The disembowelled body of a young woman is fished out of Boston harbour. The distinctive mutilations to the corpse bear all the hallmarks of the killer they call Little Jack. But unlike the six previous victims, Natalie Caldwell was no prostitute, but a highflying lawyer. As the last person to see her alive, Scott Finn, her colleague and ex-lover, comes under intense scrutiny in the subsequent investigation. Finn is also struggling to pick up the pieces of the high-profile case Natalie was involved in before she died. On September 11th 2005, a packed commuter train was targeted in an atrocity that became known as the Anniversary Bombing. Now the widow of one of the victims is suing the company in charge of security on the rail line. The more Finn uncovers about Tannery vs. Huron Security, the murkier the case appears. As revelation follows revelation, Finn begins to harbour a dark suspicion. Was Natalie the random victim of a deranged psychopath? Or could the case she was working on have some connection with her death? Meanwhile, the city is terrorised by a vicious serial killer. And Finn begins to fear for his own survival.