 This film integrates two popular "conspiracy theories" of gangster  folklore: that John Dillinger didnt really die at the Biograph (for  years, no one bought the idea that the FBI had killed him because  the face was different and the man weighed more but this was easily  explained by Dillinger having plastic surgery and just natural  weight gain) and that Al Capone had hidden away a fortune somewhere  in Chicago. (Geraldo Rivera did an expose in which he did in fact  find the vault...but it was empty)