4x1 - Mad Dog Sullivan

July 13, 2012

Gun-for-hire Joe "Mad Dog" Sullivan tries to hide his criminal activities from his family.

4x2 - Family Secrets

July 20, 2012

Frank Calabrese Jr., son of mobster Frank Calabrese, flipped against his father, and nearly brought down the vaunted Chicago Outfit.

4x3 - “Mad Sam” DeStefano

July 27, 2012

One of the most violent and outrageous characters in mob history, "Mad Sam" DeStefano lived up to his moniker throughout a three-decade reign as a juice loan lender and sadistic enforcer with the notorious Chicago Outfit.

4x4 - Dutch Schultz

Dutch Schultz ruled the numbers rackets until mob bosses ordered his murder.

4x5 - The Iceman: Richard Kuklinski

August 14, 2012

Richard Kuklinski lived a shocking double life; suburban husband and father at home, and brutal contract killer on the streets.

4x6 - Carmine ''The Snake'' Persico

August 21, 2012

Carmine Persico stands as one of most enduring Godfathers in mafia history.

4x7 - The Grim Reaper: Greg Scarpa

August 28, 2012

Gregory Scarpa lived a charmed triple life; mafia hit man, loving father and husband, and secret FBI informant.