In the 1960s, the agency is alleged to have roped in many Mafia figures to help topple Fidel Castro from power in Cuba. Roselli, known as "Handsome Johnny," was the most flamboyant among them. Recruited to assassinate Castro, he in turn brought in Chicago mobster Sam Giancana and New Orleans boss Santo Trafficante. Roselli tried to have Castro poisoned, and later, shot. Some conspiracy theorists also link him to the assassination of President John F. Kennedy. But he took his secrets to the grave, having been murdered in 1976, his body found in an oil drum floating off the coast of Miami.