Billy Boyle, World War II US Army detective and ex-Boston cop, faces his toughest investigation yet: infiltrating enemy lines in France as the Allies invade Normandy. May 1944: Captain Billy Boyle is convicted on spurious charges of black market dealings stripped of his officer's rank, reduced to private, and sentenced to three months' hard labor. But Billy is given an opportunity: if he takes on the incredibly dangerous mission of investigating a...