On what is supposed to be a quiet long weekend in New Hampshire, Deputy U.S. Marshal Mackenzie Stewart is viciously attacked at the lakefront cottage of her friend, federal judge Bernadette Peacham. But while Mackenzie fends off her attacker, he manages to escape. Everything suggests he's a deranged drifter–that is until FBI Special Agent Andrew Rook arrives. With Rook, Mackenzie broke her own rule not to get involved with anyone in law enforcement, but she knows he isn't up from Washington to set things straight between them. He's on a case. But soon they realise the stakes are higher than they had imagined, and a master criminal with nothing left to lose is prepared to gamble anyone and everything.