Hellfire Canyon — Max McCoy

2007 Spur Award for Best Paperback Novel by  the Western Writers of America
Heading For A Showdown.  .  .
Towering, flame-haired Alf Bolin is a ruthless young outlaw with a passion for quoting fine literature, slaughtering anyone who gets in his way and keeping the body parts as souvenirs. Already with forty murders under his belt--and counting--the locals of Branson, Missouri, live in a state of constant terror.
.  .  .In Hellfire Canyon
Zach Thomas is a federal trooper with a personal vendetta strong enough to send him deep undercover--into the dark heart of Bolin's vicious gang. Fueled by hatred and justice, he soon wins Bolin's confidence and waits for the killer to turn his back...
Max McCoy's westerns have been called "powerful" by USA Today. Now comes a gripping new novel inspired by the true story of one of America's first serial killers--and the lone federal trooper who took on the most daring mission of all.