Elihu Willsson's gangs outgrow their master
Mine owner Elihu Willsson imported gunmen and bootleggers to break the 1921 strike in Personville ('Poisonville'), then found they would not leave and now ran the city through police chief Noonan, gambler Max 'Whisper' Thaler, bootlegger Pete the Finn, and loan shark Lew Yard. After his son Donald, the reforming newspaper publisher, is murdered, Elihu hires the Continental Op to clean up the town. The Op does it by playing the factions against each other until they kill one another off, leaving the town under martial law and Elihu back in charge.
