Riding with the Devil's Mistress — Peter Brandvold

Most of bounty hunter Lou Prophet's man-hunting jobs have been purely business transactions that he's carried out with cool professionalism. He's seldom seen the depravations his quarries have committed to earn a price on their heads. But when the Red River Gang raids the town of Luther Falls, Prophet witnesses it in person--and can't do a thing to stop it.

It will be days before a posse can be assembled--and a small girl has been kidnapped by the cold-blooded outlaws. Prophet will have to go it alone. The gang is just cocky enough to get careless and make stupid; mistake. But then Prophet meets up with a young woman who's lost her entire family--and thinks that justice and vengeance are one and the same.