When Joe Valachi has a price put on his head by Don Vito Genovese, he must take desperate steps to protect himself while in prison. An unsuccessful attempt to slit his throat puts him over the edge to break the sacred code of silence.

Charles Bronsonas Joe Valachi
Lino Venturaas Vito Genovese
Jill Irelandas Maria Reina Valachi
Walter Chiarias Dominick Petrilli, aka "Gap"
Joseph Wisemanas Salvatore Maranzano
Gerald S. O'Loughlinas Ryan, federal agent
Amedeo Nazzarias Gaetano Reina
Fausto Tozzias Albert Anastasia
Pupella Maggioas Letizia Reina
Angelo Infantias Lucky Luciano
Aldo Tonti