In documents that often read like a cheap detective novel, the story is outlined: The pitch was made to [reputed mobster Johnny] Roselli at the Hilton Plaza Hotel in New York and Roselli was initially cool to the idea. But the contact led the agency to two top mobsters, Momo Salvatore Giancana and Santos Trafficant, who were both on a U.S. list of most-wanted men.
Giancana, who was known as Sam Gold, suggested firearms might be a problem and said using a potent pill that could be slipped into Castro's food or drink might work.
Eventually, six pills of "high lethal content" were provided to Juan Orta, identified as a Cuban official who had been receiving kickback payments from gambling interests, who still had access to Castro and was in a financial bind.
"After several weeks of reported attempts, Orta apparently got cold feet and asked out of the assignment. He suggested another candidate who made several attempts without success," the document said.
Jun 26, 2007
CIA's family jewels more like the keystone kops
Particularly this bit, where they try to enlist the mafia to help them get rid of Fidel Castro.