Bob Dayton was a quiet, likable young fellow, and he performed his duties as an express clerk so well, that Mr Fred Dylan - the express agent - relied upon Bob more and more, looking upon him more as a son - especially since Sarah Dylan, the express agent's daughter, had promised to marry Bob. It was after midnight one evening, when Bob went back to his room at the local hotel, where he found two rough-looking men sat grinning back at him. 'Old friends' of Bob's, he wasn't pleased to see them, but they were sure to threaten his comfortable position in town by revealing that he spent three months in prison in relation to a bank robbery in Pecos...