Whiskey Creek by Gary McCarthy (Derby Man Series, Book 10) from Books In Motion.com

Wedding bells are in the future for Darby Buckingham, the West's hardest hitting, toughest fighting, fastest thinking, hero. But when his fiancee, Dolly Beavers, fails to show for their announced wedding, he realizes something is wrong and strikes out for Reno convinced she must be a victim of foul play. Darby is accompanied by an overzealous, aspiring, young writer. Looking after this tenderfoot while tracking down Dolly's captors on a danger-ridden trail that winds through Nevada, Wyoming and Colorado, Darby wonders if he'll live through it.