"Of the Stolen Music," "The Mystery at the Ball Park," and "The Chocolate Sundae Mystery" are just a few titles that highlight the adventures and puzzling situations faced by characters in the series. Each story presents a unique mystery that the protagonists must unravel, showcasing elements such as crime, intrigue, and various settings, from fairs to caves and even outer space.
One notable entry is "Houseboat Mystery" by Gertrude Chandler Warner,...