Slocum and the backshooters

"John Slocum is having a fine time traveling across Indian Territory with a pocketful of poker winnings--until a pair of bushwhackers catches him off guard. When he comes to, the money is gone, along with his gun and his horse. But getting back what's his will pit Slocum against a gang of killers who don't care how they kill, as long as you end up dead..."--P. of cover.