The film portrays Dillinger as something of a knucklehead, and short-sighted, when in fact he had an extremely high IQ and was always several steps ahead of everyone else. This enabled him to escape jail three times, and plan twenty bank robberies. He had a premonition that he shouldn't go out the night of his assassination, but like many fateful decisions, allowed his love interest to convince him otherwise.
Robert Conrad, who plays Charles "Pretty Boy" Floyd, later played John Dillinger in The Lady in Red (1979).
Only one year later Victor Buono will repeat his pompous, criminal mastermind types in the "Batman", "The Man from Uncle", and rejoining Robert Conrad in "The Wild, Wild West" television series.
The same year the film premiered Robert Conrad began his television series The Wild Wild West (1965) which led to him becoming an international star.
This film was notorious in its time for its gratuitous violence, so much so, that public outcry prompted CBS to cancel plans to air it in early 1968. In a grim coincidence, Nick Adams (John Dillinger) died on February 7, 1968 at the age of thirty-six from a drug overdose.