Gunslinger Joe Buckhorn agrees to the request of a survivor of Andersonville, a Civil War camp for Northern prisoners run by the sadistic General Thomas Wainwright, to kill Wainwright and end his control over an Arizona township.

"Doing time in Texas is no picnic. But getting sent to The Walls in Huntsville is a fate worse than hanging. If the guards don't kill you, the prisoners will. And if it weren't for the fact that the man who framed Hank Fallon and murdered his family could be inside The Walls, Hank would never step one foot in that heinous helltrap-- let alone go undercover as an inmate. But this isn't just another assignment. This is his chance for revenge ... Inside...