"Brilliantly constructed and grimly fascinating. . . . The result is a terrific and important book. . . . It's important because it is a morality play on the subject of loyalty. To whom are you loyal, and from who should you be able to expect loyalty?" — New York Times Book Review
 
Sammy the Bull Gravano is the highest-ranking member of the Mafia in America ever to defect. In telling Gravano's story, Peter Maas brings us as never before into the innermost sanctums of the Cosa Nostra as if we were there ourselves—a secret underworld of power, lust, greed, betrayal, and deception, with the specter of violent death always waiting in the wings.
 
Underboss: Sammy the Bull Gravano's Story of Life in the Mafia
Author: Peter Maas
Published 1997
Hardback