There's scope for a sequel.

Rating: Null/10 (3 March 2012)

There is a B grade movie, Dillinger and Capone (1995) which starred Martin Sheen and F. Murray Abraham. This particular film can easily from the base for a sequel starring Robert De Niro and Johnny Depp; 'Public Enemies 2: Dillinger Lives!' Here, Robert De Niro and Johnny Depp reprise the roles of Al Capone (The Untouchables (1987)) and John Dillinger respectively. Charles Dance would be ideal to take the role of Capone's butler, Cecil.
In summation, the wrong Dillinger is shot at the Biograph and the real Dillinger slips away and goes straight, settling on a farm in Wisconsin. He picks up his girl Billie Frechette when she is released from prison, marries and has two children.
Of course, Al Capone knows of Dillinger's new identity and kidnaps his wife and his two children in order to make him pull off another job for Capone.