Overview: The extraordinary story of one of the war's most secret alliances - between the US Naval Intelligence and the Mafia. Denied for 50 years, the pact was in fact begun on the New York waterfront and sealed in the mountains of Sicily. Now the key players speak for the first time about the deal uniting US Intelligence with "Lucky" Luciano and Don Calò Vizzini - the most feared Godfathers of their day. In Palermo, Leoluca Orlando, head of Italy's newest political party and the Mafia's number one target, talks about the tragic legacy of this most unholy alliance. NEW SEASON.