A series of murders in Michigan lead an American secret agent to Amsterdam, where he uncovers a plot to imperil the world with a potent new drug.

June 1942. As Rommel swept toward the Nile, the fall of Egypt and the capture of the Suez Canal seemed inevitable. Italian and German advance units raced toward Alexandria. Mussolini had given explicit orders: The Italians must arrive first!

Hans von Arnam travels to a Flemish village to study a strange carousel located in an old windmill that displays famous murderesses and other notorious women from history. Professor Gregorius Wahl, owner of the windmill, warns Hans to stay away from his mysterious daughter Elfi, in order to keep Hans from discovering the horrible secret shared by the Professor and Elfi's Doctor.