What is the secret of the old boarded up house? And what is the answer to the mystery of the long lost letter that is found in it? Best friends Joyce and Cynthia - along with their dog "Goliath", are determined to find out in this pre-Nancy Drew juvenile mystery for girls.

Augusta Huiell Seaman was the author of over 40 historical fiction and mystery novels for older children. (Summary by Maria Therese)