Catlow

Ben Cowan and Bijah Catlow had been bound as friends since childhood. By the time they grew to manhood, Catlow had become a top cowhand with a wild streak. It took just one disastrous confrontation with a band of greedy ranchers to make him an outlaw. And when he crossed that line, it was up to U.S. Marshal Ben Cowan to bring him in alive--if only Catlow would give him the chance....

From the Paperback edition.