May 14, 1931. Eliot Ness and his men notice that the top bosses are leaving Chicago: Frank Nitti has gone to Atlantic City; Bugs Moran and Jack Diamond have left, too. As Ness puts it, ""The rats are leaving the ship."" Obviously, they want to be out of town when someone important is hit. What Eliot doesn't know is that he is the target.
June 25, 1933. Ness and Lee Hobson are called to the Castle, a baronial estate just outside of Chicago, which is both the headquarters and home of the underworld's notorious ""King"" Frank Argos; he is one of Ness' old foes. Argos' attorney Eli Halstead explains that wealthy Frank Argos is about to die; he wants to leave his $5-million in bonds to his long-lost son.
Chicago, October 1932. Within minutes of the time the Globe's top reporter Carlton Edmunds was shot, Eliot Ness and his men are on the scene. Ostensibly it appears a stray bullet in a gunfight hit Edmunds; he was just a passerby in the wrong place at the wrong time.
Chicago. Right after the St. Valentine's Day Massacre. (February 14, 1929.) Ness and his men are scouring Chicago, looking for Bugs Moran. Ness says there used to be 2 gangs in town, now there's just one. Ness figures if they get to Moran first, maybe he'll talk-- he might just be mad enough to give them the information they need.