A twisting, turning plot drives Benn’s gripping fourth WWII mystery to feature Lt. Billy Boyle (after 2008’s Blood Alone
). Billy, a former Boston cop and a nephew by marriage to General Eisenhower, on whose staff he serves, receives orders in late 1943 to look into a raid on a U.S. Army depot in Northern Ireland. The thieves took 50 new Browning automatic rifles plus 200,000 rounds of ammunition. A few miles from the depot, the body of a known IRA man was found shot in the back of the head with a pound note in his hand—the mark of an informer. Billy’s military superiors suspect the Germans are supporting an IRA uprising. As an Irish-American whose family is sympathetic to the Republican cause, Billy struggles to remain impartial as he investigates the various factions on both sides of the Catholic-Protestant divide. Benn offers no easy answers in this rich mix of Irish history and wartime intrigue. Author tour. (Sept.)