"Mary Louise Uncovers a Mystery" is an exciting children's book from the famous author L. Frank Baum, in which the character Mary Louise goes on an exciting investigation to solve the strange events that happened in the town. Thanks to her intelligence and ingenuity, Mary Louise finds the key to solving mysterious crimes, carrying out a true detective investigation. This exciting book is full of adventures, mysteries and unforgettable characters that will not leave any reader indifferent.