What secrets lie within the mysterious old boarded-up house? When Joyce and Cynthia stumble upon a long-lost letter hidden inside, their curiosity piques, and they embark on an adventurous quest to uncover the truth. Accompanied by their loyal dog, Goliath, these best friends are ready to solve this captivating mystery in a tale reminiscent of Nancy Drew. Written by Augusta Huiell Seaman, who crafted over 40 enchanting historical fiction and mystery novels for young readers, this story promises excitement and intrigue for girls everywhere. (Summary by Maria Therese)