Dyke Darrel the Railroad Detective (Esprios Classics)

"In less than two hours after reading the notice of the crime on the midnight express. Dyke Darrel was in Chicago. He visited the body of the murdered messenger, and made a brief examination. It was at once evident to Darrel, that Nicholson had made a desperate fight for life, but that he had been overpowered by a superior force.
A reward of ten thousand dollars was already offered for the detection and punishment of the outlaws."