Thirty Mile was a stage stop on the Blue River route. One ramshackle building stood there, serving not only as a station, but a mail and express drop, and general store. It was a summer morning when Dan Reid called at Thirty Mile to buy a few supplies for the camp which the masked man and Tonto had established. Dan found no-one in the store except for a boy of his own age, who was behind the counter. The young clerk, hungry for companionship, introduced himself as Jack Harney, and the two quickly became acquainted, and went outside to play a game of horseshoes, during which they found something queer...