McCall shot Hickok from behind as he played poker at Nuttal & Mann's Saloon in Deadwood, Dakota Territory, on August 2, 1876.

[1] McCall was intoxicated while drinking alcohol at Nuttal & Mann's saloon in Deadwood, Dakota Territory, on August 1, 1876, when one of the players dropped out of a poker game that included "Wild Bill" Hickok.

[3] An impromptu court was called to order with the prosecution, defense, and jury made up of local miners and businessmen.

On trial the next day in McDaniel's Theater, McCall claimed his actions were in retribution for Hickok having previously killed his brother in Abilene, Kansas.

"[4] Fearing for his safety, McCall soon left the area and headed into Wyoming Territory, where he repeatedly bragged at local saloons about killing Hickok in a "fair" gunfight.

[1] But Wyoming authorities refused to recognize the result of McCall's acquittal on the grounds that the court in Deadwood had no legal jurisdiction.

Agreeing, the federal court in Yankton, Dakota Territory, declared that double jeopardy did not apply, and set a date for a retrial.

[6] The killing of Hickok and the capture of McCall is reenacted every summer evening (except Sundays) at the Masonic Temple in Deadwood.