Six Six Six - The Fbi Agent, The Mob Killer, And The Bloody Alliance The Feds Couldn't Hide.
Lance draws on three decades of once secret FBI files to tell the definitive story of Greg Scarpa Sr., a.k.a. the "Grim Reaper," a Mafia capo who "stopped counting" after 50 murders, while secretly betraying a crime family as an informant for the FBI.--From publisher's description.