Francis Dimaio is the head of the Pinkerton's National Detective Agency in Chicago, and a renowned detective in his own right.

He was involved in the killing of Butch and the Sundance Kid, as well as infiltrating and a Maffia operations by posing as a Sicilian counter-fitter in prison.

Naturally his arrival in Chicago was not met with a lot of favour from the South Side Gang, especially since he is currently heading an effort, sponsored by the Mayor, to stop Mafia kidnappings.