Bare-Faced Outrage: Justice of Sorts by Martyn C. Marais

When he enters Cheyenne, Billy Cotton realises that it might be a mistake. There are men of influence in the city who want him dead. But he has never been a man to skulk in the shadows when faced by dangerous men. But you can never be sure when your time is up and Ernie McLean is a man who has a particular reason to see Billy dead.