During a poker game, Wild Bill Hickok is murdered by Jack McCall in Tom Nuttall's #10 Saloon. When McCall is put on trial, Swearengen leans on the acting magistrate, suggesting that McCall must be acquitted to avoid scrutiny from Washington, D.C. The judge cuts the trial short and the jury acquits McCall, who leaves town immediately after the verdict. Bullock pursues McCall, determined to bring him to justice. Bullock and Charlie Utter later find McCall hiding at a boarding house and take him to Yankton for trial.