John Kruger - a top United States Marshals Service for the WITSEC (WITSEC) - specializes in "erasing" high-profile witnesses: faking their deaths to protect them from anyone that might silence them. After erasing mob witness Johnny Casteleone, Kruger is given a new assignment by his boss, Chief Arthur Beller, to protect Lee Cullen, a senior executive at Cyrez Corporation, a defense contractor.