- Long-time International Brotherhood of Teamsters boss, James "Jimmy" Hoffa, went missing in 1975.
- While theories surrounding his disappearance are still circulating today, the case has been described as one of America's greatest unsolved mysteries.
- Martin Scorsese's "The Irishman" starring Robert De Niro, Al Pacino, and Joe Pesci, among many other legendary actors, is a fictionalized account of Hoffa's disappearance from the point of view of Mafia hitman Frank Sheeran.
- The film is based on a book by Charles Brandt, "I Heard You Paint Houses," which details interviews and confessions that Sheeran once reportedly made to Brandt before he died.
- Scorsese and De Niro have both said the film isn't necessarily a true representation of Sheeran - rather it's about a character they built together based on Sheeran.
- Here's what we know so far about the real-life Jimmy Hoffa and the ongoing investigation into his disappearance.
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