The Vanishing Houseboat
When Penny and Louise take their friend Laura Blair to apply for a new job, they accidentally discover several mysteries. Linda begins work in a boarding house
When Penny and Louise take their friend Laura Blair to apply for a new job, they accidentally discover several mysteries. Linda begins work in a boarding house known for strange disappearances. Meanwhile, Penny becomes acquainted with Mud-Cat Joe and his family who are homeless ever since their houseboat was stolen.
