When tragedy hits his family, in the form of a sudden illness to his father, young Teddy Thornton is forced to leave school and find work to help support his family. Without his realization he is thrown into a world of crime and counterfeiting. Will he do the right thing, or will he unwittingly be drawn down the wrong path? And will the mystery of Heron Hall be solved? Mary T. Waggaman was a prolific Catholic writer of juvenile fiction in the late 1800's and early 1900's. (Introduction by Maria Therese)