The Murmuring Portrait

In "The Murmuring Portrait", Kay, Wilma, and Betty are robbed by Monty the Mole while on a picnic. Later, the girls hear about the Moleson Mansion, and they believe that Mrs. Moleson might be Monty's mother. While at the mansion, the girls learn that Mrs. Moleson is in terrible health. Mrs. Moleson's doctor and nurse appear to be trying to gain control of her fortune. Kay searches for Monty while she tries to keep Mrs. Moleson's fortune safe.