Narrator (16 episodes, 2008-2010)
Narrator / Self - Narrator (12 episodes, 2010-2012)
Self - Author, 'Five Families' / Self / Self - Author 'Five Families' / Self - Author 'The Families' / Self - New York Times Investigative Reporter / Self - The New York Times (7 episodes, 2007-2012)
Self - Author 'Gangbusters' / Self / Self - Author, 'Gangbusters' / Self - Author: 'Gangbusters' (7 episodes, 2007-2010)
Mobster (6 episodes, 2012)
Self - www.ganglandnews.com / Self - Editor / Self - Former Reporter, New York Daily News / Self - Reporter (5 episodes, 2007-2012)
Mad Sam Destefano / Mobster / Paul Varto / Policaman (4 episodes, 2012)
Self / Self - Chief Counsel, House Assassinations Committee / Self - Former Chief Counsel, U.S. Committee on Assassinations (4 episodes, 2007-2008)
Self - Crime Historian / Self / Self - Organized Crime Historian (4 episodes, 2008-2010)
Host / Self - Hitman for Chicago Mob / Self - Mafia Hit Man (3 episodes, 2007-2012)
Self - Former Director, New York Organized Crime Task Force / Self - Former Head of New York Organized Crime Force / Self - Former Head of New York Organized Crime Task Force (3 episodes, 2007-2008)
Self / Self - Mafia Insider / Self - Marcello Associate (3 episodes, 2007-2008)
Self - Retired NYPD Mob Investigator / Self - Former NYPD Mob Investigator (3 episodes, 2007)
Author, 'The Life & Times of Lepke Buchalter' / Self / Self - Author, 'The Life & Times of Lepke Buchalter (3 episodes, 2008-2010)
Self - Commanding Officer, Organized Crime Task Force, New York Police Department / Self - Former NYPD Commanding Officer / Self - Nypd (Retired) (3 episodes, 2008)
Self (3 episodes, 2009-2012)
Self - Author / Self - President, Merry Gangsters Literary Society (2 episodes, 2007-2009)
Self - Former Hill Family Attorney / Self - Henry Hills' Attorney (2 episodes, 2007-2008)
Self - Author / Self - Author 'Mafia Dynasty' (2 episodes, 2007-2008)
Self / Self - Author: 'The Valachi Papers' (2 episodes, 2007)
Self - Author 'Little Man' / Self - Author, 'Little Man' (2 episodes, 2007)
Self - Friend of Bugsy Siegel / Self - Friend of Luciano (2 episodes, 2007)
Narrator (2 episodes, 2007)
Self - Author and Mob Reporter / Self - Author: ' Loyalty and Betrayal' (2 episodes, 2007)
Self / Self - Hoffa Attorney (3 episodes, 2007-2008)
Self - Former New York Daily News Columnist / Self - New York Daily News Editor (2 episodes, 2008-2010)
Self / Self - NYPD (2 episodes, 2008)
Self / Self - Author, 'The Road to Dallas' (2 episodes, 2008)
Self - Former FBI Special Agent / Self - Retired FBI Special Agent (2 episodes, 2008)
Self - Author, 'For The Sins Of My Father' / Self - Roy DeMeo's son (2 episodes, 2008)
Narrator (1 episode, 2007)
Self - Gregory's Daughter (1 episode, 2012)
Self (1 episode, 2007)
Self - Author 'Longtime No See' (1 episode, 2007)
Self - Former Assistant U.S. Attorney (1 episode, 2007)
Self - RFK Confidant (1 episode, 2007)
Self - Widow of Flamingo Architect (1 episode, 2007)
Self - FBI Agent (1 episode, 2007)
Self - Girlfriend of Henry Hill (1 episode, 2007)
Self - Author, 'The Teamsters' (1 episode, 2007)
Self - New York District Attorney (1 episode, 2007)
Self - Jimmy Hoffa's Daughter (1 episode, 2007)
Self - Luciano Relative (1 episode, 2007)
Self - author (1 episode, 2007)
Self - Author, 'Flamingo' (1 episode, 2007)
Self - Brother of Henry Hill (1 episode, 2007)
Self - Retired Teamster (1 episode, 2007)
Self - Son of Jimmy Hoffa (1 episode, 2007)
Self - Chief of Lansky Strike Force (1 episode, 2007)
Self - Former Federal Mob Investigator (1 episode, 2007)
Self - Lansky Family Friend (1 episode, 2007)
Self - Special Agent, FBI (1 episode, 2007)
Self - Former Justice Department Aide (1 episode, 2007)
Self - Author 'Blood and Power' (1 episode, 2007)
Self - Lansky's Attorney (1 episode, 2007)
Self - Hoffa Biographer (1 episode, 2007)
Self - Friend of Lucky in Palermo (1 episode, 2007)
Self - Hoffa Friend (1 episode, 2007)
Self - Giancana Friend (1 episode, 2007)
Self - Dewey Staff Prosecutor (1 episode, 2007)
Self - Former U.S. Attorney (1 episode, 2007)
Self - news photographer (1 episode, 2007)
Self - Defense Attorney (1 episode, 2007)
Self - Luciano's Waiter (1 episode, 2007)
Self - Sister of Henry Hill (1 episode, 2007)
Self - Investigative Journalist (1 episode, 2007)
Self - Detective, NYPD (Retired) (1 episode, 2007)
Self - Manager of Henry Hill (1 episode, 2007)
Self - Bugsy's Former Attorney (1 episode, 2007)
Self - Retired NYPD Detective (1 episode, 2007)
Self - Brazil, Indiana Town Historian (1 episode, 2007)
Self - Former Hoffa Family Friend (1 episode, 2007)
Self - Author, 'L.A. Confidential' (1 episode, 2008)
Self (1 episode, 2008)
Self - Former Los Angeles Photographer (1 episode, 2008)
Self - Author, 'King of the Sunset Strip' (1 episode, 2008)
Self - Former Gambino Soldier (1 episode, 2008)
Self - FBI Gambino Squad (1 episode, 2008)
Self - Friend of Karen Hill (1 episode, 2008)
Self - Daughter of Frank Lucas (1 episode, 2008)
Self - Bulger Associate (1 episode, 2008)
Self - 'Philadelphia Inquirer' Reporter (1 episode, 2008)
Self - Former News Reporter, L.A. Times (1 episode, 2008)
Self - Scarfo Associate (1 episode, 2008)
Self - Former Narcotics Agent (1 episode, 2008)
Self - Author: 'Gangsters of Harlem' (1 episode, 2008)
Self - Castellano's Housekeeper (1 episode, 2008)
Self - Former Reporter, WBBM-TV (1 episode, 2008)
Self - Jewish Mob Expert (1 episode, 2008)
Self - Retired FBI Agent (1 episode, 2008)
Self - Former U.S. Attorney (1 episode, 2008)
Self - Former Supervisory Special Agent, New York FBI (1 episode, 2008)
Self - Retired IRS Agent (1 episode, 2008)
Self - Aithor, 'Sunshine and Wealth' (1 episode, 2008)
Self - FBI Special Agent (Retired) (1 episode, 2008)
Self - James Mcbratney's Son (1 episode, 2008)
Self - Former Boston Globe Reporter (1 episode, 2008)
Self - Former Investigator, Cook County Sheriffs Dept. (1 episode, 2008)
Self - Senior Editor, Marietta Daily Journal (1 episode, 2008)
Self - Mafia Historian (1 episode, 2008)
Self - Former FBI Special Agent (1 episode, 2008)
Self - Founder, Marietta Museum of History (1 episode, 2008)
Self - Assistant U.S. Attorney (1 episode, 2008)
Self - Son of Thomas Dewey (1 episode, 2008)
Self - Marcello Defense Attorney (1 episode, 2008)
Self - Retired FBI Special Agent (1 episode, 2008)
Self - Massachusetts State Police (Retired) (1 episode, 2008)
Self - Former Chief Investigator, Chicago Crime Commission (1 episode, 2008)
Self - Former NYPD Detective (1 episode, 2008)
Self - FBI, Boston (1 episode, 2008)
Self - DEA Agent (1 episode, 2008)
Self - Former US Attorney, New York (1 episode, 2008)
Self - Grandson of 'Little Augie' Pisano (1 episode, 2008)
Self - Retired Det. Sgt., Chicago PD (1 episode, 2008)
Self - Philadelphia Police Department (Retired) (1 episode, 2008)
Self - Author, 'Tough Jews' (1 episode, 2008)
Self - Former Boxing Promoter (1 episode, 2008)
Self - Defense Attorney (1 episode, 2008)
Self - Former Assistant U.S. Attorney - Brooklyn (1 episode, 2008)
Self - FBI Agent (1 episode, 2008)
Self - Professor of History, Southeastern Louisiana University (1 episode, 2008)
Self - Reporter, 'Chicago Tribune' (1 episode, 2008)
Self - Mob Lady (1 episode, 2008)
Self - Retired Las Vegas PD Commander (1 episode, 2008)
Self - Author: 'Harlem Godfather' (1 episode, 2008)
Self - Federal Prosecutor (1 episode, 2008)
Gangster (1 episode, 2009)
Mickey Featherstone (1 episode, 2009)
Self - Chicago Crime Commission (1 episode, 2009)
Self - Prohibition Historian (1 episode, 2009)
Self - Author, 'Frank Nitti' (1 episode, 2009)
Self - Author, 'After Capone' (1 episode, 2009)
Greenfield (1 episode, 2010)
Self (1 episode, 2010)
Self - Author, 'Butcher' (1 episode, 2010)
(1 episode, 2010)
Self - Former DEA Agent (1 episode, 2010)
Self - Former P:itera Associate (1 episode, 2010)
Self - Author, 'Gangland Gotham' (1 episode, 2010)
Self - Author, 'Organized Crime' (1 episode, 2010)
Self - Formlr Asst. US Attorney (1 episode, 2010)
Self - New York Journalist (1 episode, 2010)
Self - Defense Attorney (1 episode, 2010)
Self - DEA Special Agent (1 episode, 2010)
Self - ATF Special Agent (1 episode, 2010)
Self - Ex Wife (1 episode, 2012)
Self - Author, 'Mafia Son' (1 episode, 2012)
Self - ATG Agent (1 episode, 2012)
Self - Author (1 episode, 2012)
Iceman (1 episode, 2012)
Self - Scarpa's Attorney (1 episode, 2012)
Self - Asst. Attorney General (1 episode, 2012)
Self - Former FBI Agent (1 episode, 2012)
Self - Investigator (1 episode, 2012)
Self - Brooklyn DA's Office (1 episode, 2012)