Raymond Batvinis recounts equally thrilling stories of international intrigue as the FBI, working alongside other US government elements and allies, sought to overcome Germany’s efforts to disrupt and defeat its war effort in the US before and during the war. They will transfix the reader to the book’s pages much as the writings of the great spy novelists. However, unlike the novelists’ works, Batvinis’ accounts are not amusements, but discussions of real cases of a struggle between adversaries filled with lessons on counterintelligence (spycatching) as well as counterespionage (turning enemy agents against their spymasters).