The FBI Files Sam Giancana - Paperbackby Tony Dark (Author) From movie stars to the president of the United States, Sam Giancana, enjoyed life as being feared as one of Chicago's most infamous mob bosses. Giancana's control over organized crime brought power, riches, and insanity. The FBI spent almost 20 years and millions of dollars to bring this powerful man to justice. After constant pursuit and clever tactics, Giancana's life at the top turned into one of seclusion and paranoia.