Strange Affair of the Cinderella Stamps

Strange Affair of the Cinderella Stamps...Their night in a Halloween Mansion led them to...the conclusion of the Ernie Van Arkle series. The Vandewater boys spend a wintery weekend with their friends hunting for activities to pass the time. While up in their attic playing a Halloween game, they stumble across an antique chest filled with strange and intriguing treasures. Using their ingenuity, they embark on a quest into the past, unearthing some amazing discoveries. Will they locate an old key or figure out another way to get to the bottom of a series of puzzling mysteries and events?