Death's Door

A WWII-era mystery novel, Death's Door, follows Lieutenant Billy Boyle as he goes undercover in the Vatican to investigate a murder and search for his missing British spy girlfriend. The Vatican's neutral territory in German-occupied Rome poses numerous obstacles, including navigating its politics and personalities, and risking an open violation of its neutrality to rescue his girlfriend from the Regina Coeli prison. James R. Benn's seventh installment in the hit series is an exciting and thrilling read.