John Slocum collected a $7000 bounty on Teddy Cutler. But now he's spotted Teddy walking around Phoenix, Arizona, free as a bird--with no recollection of robbing four stagecoaches and killing three men. The law believes Teddy's been afflicted with amnesia, and Slocum's been given the job of keeping an eye on him to determine whether Teddy's condition makes him an innocent man, or if he's just playing possum.