To catch these cons, Longarm will have to play by their rules.   

Rumor has it that Deputy Marshal Custis Long is now riding on the other side of the law—swindling ranchers and taking bribes, just as cool as you please. But if folks’d only look closer, they’d notice the fake moustache and counterfeit badge—and recognize the conman behind them…
 
A motley crew of thieves, gamblers, and ladies of the night has just arrived in Ogallala, looking to relieve the local bank of its contents. But their plan—to have one of their men impersonate the lawman known as Longarm—has a fatal flaw. The owlhoots never counted on running smack into Longarm himself…