What’s a twenty-two-year-old Irish American cop who’s never been out of Massachusetts before doing at Beardsley Hall, an English country house, having lunch with King Haakon of Norway? Billy Boyle himself wonders. Back home in Southie, he’d barely made detective when war was declared. Unwilling to fight—and perhaps die—for England, he was relieved when his mother wangled a job for him on the staff of a general married...

Praise for the Billy Boyle series:
“The brash kid from Southie is still open, direct and fearless in his manner (and in his wonderfully loose-jointed use of the English language) and in no danger of losing his cover as a ‘happy-go-lucky Yank.’ But even amid the excitement of the spirited wartime storytelling, Benn allows Boyle’s experiences to change him in ways both subtle and dramatic.”—Marilyn Stasio, The...

The fifth Billy Boyle investigation
American Lieutenant Billy Boyle is assigned to London by his uncle, General Dwight D. Eisenhower, to investigate the murder of a Russian security officer in the buildup to D-Day. Billy recognizes that this is a politically charged case, pitting Allies against one another, and that he must proceed with caution. The Polish contingent is incensed over evidence that implicates the Russians in the murder of...

In this seventh installment of James R. Benn’s hit WWII-era mystery series, Lieutenant Billy Boyle goes undercover in the Vatican.
 
Lieutenant Billy Boyle could have used a rest after his last case, but when his girlfriend, Diana Seaton, a British spy, goes missing in the Vatican, where she was working undercover, he insists on being assigned to a murder investigation there so he can try to help her.
 
An American...

A novel inspired by the controversial Operation Tiger tragedy follows Billy Boyle's investigation into an unidentified body that has washed up on the beach near a secret training site for the approaching D-Day invasion of Normandy.

"Billy Boyle, US Army detective and ex-Boston cop, faces his toughest investigation yet: infiltrating enemy lines in France as the Allies invade Normandy. It's late May 1944. Captain Billy Boyle is court-martialed on spurious charges of black market dealings. Stripped of his officer's rank, reduced to private, and sentenced to three months' hard labor, Boyle is given an opportunity: he can avoid his punishment if he goes behind enemy lines to rescue...

"A double murder in a French chateau just after D-Day threatens Allied operations, and US Army detective Billy Boyle is called to investigate. July, 1944, a full month after D-Day. Billy, Kaz, and Big Mike are assigned to investigate a double murder, close to the front lines in Normandy.An American officer and a member of the French Resistance were found dead in a manor house outside the town of Trevieres. The investigation is shrouded in secrecy,...

England, 1944: Recovering from physical and psychological wounds sustained in the liberation of Paris, US Army detective Billy Boyle and Lieutenant Kazimierz are sent to a convalescent hospital in the English countryside—only to discover that St. Albans may have its own war secrets, including a killer.
"As historical detective series go, this one is extremely well tended by an author who clearly dotes on his hero....

US Army Captain Billy Boyle plunges into partisan warfare alongside betrayed French Resistance fighters in his seventeenth WWII investigation.
Southern France, 1944: Ex-Boston cop and wartime military investigator Billy Boyle is given a dangerous assignment—to extract a British Special Operations Executive officer from Crete and take him to France to serve on a security detail to identify fascist sympathizers. The mission gets even...