Clue of the Silken Ladder

In THE CLUE OF THE SILKEN LADDER, Penny investigates multiple mysteries. What is the purpose of the singular silken ladder made by the secretive and somewhat sinister old Japanese curio shop owner? How can the "Riverview Star" obtain evidence that a popular troup of spiritualists really are heartless con artists? Last, who is perpetrating the gravity-defying burglaries that have rocked the town ? Meanwhile, the Parker housekeeper, Mrs. Weems, has come into an inheritance and plans to leave ...