Norman Estabrook, a thrill-seeking billionaire, is confined to his Montana ranch after his arrest on suspicion of money laundering and aiding drug traffickers. Estabrook yearns to kill FBI director John March and special agent Simon Cahill as well as catch the anonymous snitch, hotelier Lizzie Rush, who turned him in. Rush has flown to Ireland to warn Kiera Sullivan, Cahill's lover, that their lives are in danger, but her mission gets complicated when she runs into Lord Will Davenport, an attractive SIS agent. In Boston, March's homicide detective daughter, Abigail Browning, goes missing after Estabrook's cohorts bomb the triple-decker house where she lives with her fianc.̌