Irish-American Army Lieutenant Detective Billy Boyle returns to his family's homeland only to get sucked into a complex web of wartime intrigue.

Autumn, 1943: Fifty Browning Automatic Rifles and thousands of rounds of ammunition have been stolen from a US Army base in Northern Ireland. A few miles from the depot, the body of a known IRA man has been found with a bullet in the head and a pound note in his hand—the mark of an informer. 

Fearing a German-sponsored IRA uprising, General Eisenhower, Billy’s uncle by marriage, sends him to recover the weapons before more damage is done. Billy searched for the missing weapons with the help of a beautiful Irish woman, an officer in British intelligence. Soldiers of the US Army, members of the Royal Ulster Constabulary, as well as of local Protestant societies, and local Catholic laymen all come under suspicion. Bodies begin to accumulate, and Billy finds unexpected challenges to his Boston-Irish upbringing and his own IRA sympathies. There are rogues on both sides, he learns.