It was a duty to a dead man. Matt Jensen had promised his friend, slain by an outlaw named Pogue Willis, that he would deliver money to his brother in St. Louis. But Matt's search leads him from St. Louis to Arizona Territory and into the company of a rich Easterner and his beautiful young wife. For Matt, the schemes of some citified land prospectors don't mean much, until the young woman is seized by renegade Apaches and it's up to Matt to save her...

"After surviving a brilliantly plotted murder attempt, the richest man in San Francisco is looking to hire the best protection money can buy. Enter Matt Jensen, who, for the princely sum of $5000, agrees to escort millionaire John Gillespie and his very fetching daughter on a railway journey from Frisco to Chicago. There's just one catch: the world's deadliest killers are coming along for the ride. In Provo, Utah, a knife-wielding assassin leads Jensen...

Twelve years ago, newspaperman John Bryce saved an innocent man from the hangman's noose. That man was Matt Jensen. In gratitude, Matt gave Bryce four gold nuggets and told him, "If there's ever anything I can do, just let me know." Now that day has come.

"Purgatory, Arizona, is the last place you'll ever cross the law. Because in this town, the law is the personal fiefdom of an evil man - as Matt Jensen discovered on his first day in town, when an unavoidable gunfight and a dead deputy landed him in jail, sentenced to hang at Yuma Prison. But when the train from Purgatory to Yuma is violently derailed, Matt is set free amidst the carnage - with a choice to make."--Back cover.

Joe Buckhorn is a cowboy handy with a gun. If the gun work is easy, knowing which side to be on is hard.