This episode explores six of the most notorious mafia killings of all time and the everlasting effects these murders had on organized crime. From the Castellammarese War in the late 1920's to the assassination of the Boss of Bosses, Paul Castellano, in 1985, we'll go deep inside the most infamous mafia power struggles in American history. The program delves into the relationships of greedy, power hungry Mafiosi, exploring their conflicts, and illustrating their bloody resolutions. From Maranzano to Masseria, Dutch Shultz to Bugsy Siegel, the outcome is always the same... murder.

• Jack Ruby
• Michael McGlone