Bounty Hunter (A Breed Western #13‪)‬

Around the Border they called him Breed. Part white, part Apache, he’d been christened Matthew Gunn, but the Apache had given him their own special name-Azul.
Right now, Breed was in one whole load of trouble. He’d killed two men and got a price on his head. What he didn’t know was that Fritz Baum, a bounty hunter with a taste for violent killing, had been paid a handsome sum for tracking down Breed and delivering him to a mysterious stranger in Cinqua. Baum’s reputation was second to none — but so was Breed’s when it came to dealing in death. And when the two of them clashed the fighting took on a whole new shade-death red!