Uncle Sam wants Deputy U.S. Marshall Matt Battles …to be an outlaw!  Battles is blackmailed by President Chester A. Arthur who needs an undercover agent to discover why Hatfield J. Warful is gathering every notorious gunslinger to his home in Slaughter Canyon. Thanks to a false news report planted by the Secret Service, Battles is wanted for robbery and murder, leaving him no choice but to infiltrate Warful’s gang–but the trigger happy gunfighters share unpleasant history with the supposed ex-marshall. A target from both the law and the outlaws, Battles faces the challenge of his life. If his particular mission fails, the result could be a second Civil War.