Lawless Prairie (Thorndike Large Print Western Series)

Clint Conner took a horse only to stop a man from mistreating it, but a vengeful judge sentenced him to six years. Quietly serving his time, Clint suddenly finds himself free after being swept up in a daring jailbreak. Now a fugitive, he'll need courage, cunning, and cold-blooded ruthlessness as he rides the lawless prairie. But before Clint can escape to the hills of Montana, he'll have to outgun Sioux Indians, malicious outlaws, and a marshal determined to bring him back.