Frank |The Enforcer| Nitti, arguably the most glamorised gangster in history, was an infamous Chicago wiseguy who eventually rose to command Chicago's premier underworld organisation, the Outfit. Although he has been widely mentioned in fictional works, this is the first book to document Nitti's real-life criminal career. Author Ronald Humble chronicles his beginnings in New York's Navy Street Boys, his rise to Al Capone's second-in-command and his eventual leadership of the Outfit.