Still an earth-bound spirit-detective, Tuck is on the case of the murder of a mysterious philanthropist with ties to the Russian mob and 1939 gangsters. With the help of his wife, Professor Angela Tucker, and his former partner, Detective Bear Braddock, they must find the killer and be the first to read "the book"-an old gangster's journal of the roots of espionage, racketeering, and corruption leading to the identity of modern-day powerbrokers and spies. Tuck finds a colorful cast of allies in a tough Assistant U.S. Attorney General, a secretive FBI agent, and the spirits of a long-dead 1930s gangster and his sassy girlfriend.

As Tuck searches to learn the secrets of "the book," he begins to unravel his own ancestry of mobsters, adventurers, and wayward spirits. Is being a ghost hereditary?