"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). The US and Swiss governments are about to embark on diplomatic discussions regarding the Safehaven Protocols, which are aimed at limiting the amount of war materials exported by Switzerland...

"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,...

Billy Boyle, a young Irish-American cop from Boston, has just made detective when World War II breaks out. His "Uncle Ike" is Dwight D. Eisenhower, plucked from obscurity to command Army forces in Europe, and he wants Billy to be his personal investigator. Accompanied by an aristocratic Polish officer in exile and a beautiful British WREN, his mission is to catch a spy who may have been planted in Beardsley Hall, where the Norwegian government in...

"It's September 1944, and the US is poised to launch Operation Frantic, a shuttle bombing mission to be conducted by American aircraft based in Great Britain, southern Italy, and three Soviet airfields in the Ukraine. Tensions are already high between the American and Russian allies when two intelligence agents-one Soviet, one American-are found dead at Poltava, one of the Ukrainian bases. Billy is brought in to investigate, and this time he's paired,...

"Just days after the Liberation of Paris, Billy and Kaz 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 Ravensbruck, the Nazi concentration camp for women, and Kaz's sister, Angelika, who he recently learned was alive and working with...

"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 monsignor is found murdered at the foot of Death's Door, one of the five entrances to Saint Peter's Basilica. Wild Bill Donovan, head of the OSS, wants the killing investigated....

In November 1942 the Allies are poised to liberate Algeria from the Vichy French regime, a client state of Nazi Germany. This, it is hoped, will squeeze Rommel's Afirka Korps between two forces and sweep him from North Africa. But no one knows whether the French will greet the Americans as friends or foes. Based on family connections rather than experience, Billy Boyle, a young Irish-American cop from Boston, has become General Dwight D. Eisenhower's...

Fifty Browning Automatic Rifles have been stolen from a US Army base in Northern Ireland. His “uncle” Ike Eisenhower sends Billy to recover the weapons, which might be used in a German-sponsored IRA uprising. Bodies begin to accumulate as Billy finds unexpected challenges to his Boston-Irish upbringing and IRA sympathies. There are rogues on both sides, he learns.