When a wounded and exhausted rider appears at the Bar ES ranch in search of Pat Stevens, Sam and Ezra are all ears. The stranger- Kern Clymer- has come over from Hardrock at the request of a mine owner named Bragg to ask Pat's aid, but all they can get out of Clymer is something about fuel shipments to the Fire Mountain Mine being blocked.
This book is part of the Powder Valley Books series and is book #53 in the series.