Valley of outlaws

the long version

"When he first arrived in town, no one knew anything about Shannon except that he was probably a deaf-mute. He bought supplies and ventured off into a secluded valley. Then one day Shannon came upon a horse that had been abused and was near death, and with patience and care restored it to good health. But the horse is lost to him when outlaw Terry Shawn races into the valley with a posse hot on his trail, and grabs the new horse to make his getaway. Terry later hears that the horse he once 'borrowed' is back with his original cruel owner, but he's willing to risk his own capture to somehow return this horse to Shannon."--Publisher description.