The grand old painting of Toby, Linnet, and Alexander has been given to an art museum for a summer exhibition-and the ghosts have taken it! Even worse, Grandmother Oldknow may have to sell the painting to keep the manor house in the family. If that happens, the children of Green Knowe may be gone forever.
Tolly, however, discovers that the house holds many other magical secrets-including a family treasure that disappeared generations ago. If Tolly can solve a few mysteries, he might be able to find the treasure and save the house, the painting, and his ghost friends!