Billy Boyle

Two officers from the American troops stationed in Caserta, Italy, not far from Naples, have been found murdered. The MOs are completely different, and it seems like the officers had no connection to each other, but one frightening fact links the murders: each body was discovered with a single playing card: the Lieutenant, the 10 of hearts; the Captain, the jack of hearts. The message seems to be clear: If the murderer isn't apprehended, the higher ranks will be next.

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.

March, 1944: US Army Lieutenant Billy Boyle, back in England after a dangerous mission in Italy, is due for a little R&R, and also a promotion. But the now-Captain Boyle doesn't get to kick back and enjoy his leisure time because two upsetting cases fall into his lap at once.

When an unidentified corpse washes ashore at Slapton Sandson England's southern coast, US army captain Billy Boyle and his partner, Lieutenant Piotr "Kaz" Kazimierz, are assigned to investigate. The Devonshirebeach is the home to Operation Tiger, the top-secret rehearsal for theapproaching D-day invasion of Normandy, and the area is restricted; no one seems to know where the corpse could have come from.

It's 1943: Amid the bitter, violent Solomon Islands campaign, Billy is assigned the murder investigation of a native coastwatcher whom future president Jack Kennedy discovered on a nearby island with his head bashed in. As the body count climbs, Billy must figure out whether Jack is a cold-blooded killer, even as war rages around him.

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 high-value Allied soldier.

A murder in wartime Switzerland reveals Swiss complicity with the Nazis and profiteering during World War II. Billy and Kaz are sent to neutral Switzerland to investigate the murder of a Swiss banking official with ties to the Office of Strategic Services (OSS). Swiss banks are openly laundering gold "harvested" from concentration camps, and those that are profiting will do everything they can to protect their wealth and hide their dark secrets.

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, due to the highly confidential nature of the American unit headquartered at the Manoir de Castilly; the 23rd Headquarters Special Troops. 

Just days after the Liberation of Paris, US Army Detective Billy Boyle and Lieutenant Kazimierz are brought to Saint Albans Convalescent Hospital in the English countryside. Kaz has been diagnosed with a heart condition, and Billy is dealing with emotional exhaustion and his recent methamphetamine abuse. Meanwhile, Billy's love, Diana Seaton, has been taken to Ravensbrück, the Nazi concentration camp for women, and Kaz's sister, Angelika, who he recently learned was alive and working with the Polish Underground, has also been captured and transported to the same camp.   

Southern France, 1944: What should be a simple assignment with a Special Operations Executive officer gets complicated quickly as Billy navigates the tensions between Resistance groups in the process of gathering information on Vichy officials and other collaborators who escaped with the retreating Germans. Unexpectedly, the SOE officer has many enemies in the Resistance, linked to the failed Vercors uprising. With sacrifice and betrayal afoot, Billy doesn’t know who he can trust, or how close to death this case may bring him.