Relates the experience of a faithful messenger boy in a large city, who in answering a call was the means of ferreting out a band of criminals who for years had baffled the police and detectives. The story tells of the many dangers and hardships these boys have to undergo, the important services they often render by their clever movements; and how by his fidelity to duty, Messenger Boy No. 48 rose to a most important position of trust and honor. It teaches boys that self-reliance, pluck and the faithful performance of duties are the real secrets of success. 241 pages.