"Such deliciously creepy fun I fell in love with Dr. Fell " --Chris Grabenstein, New York Times bestselling author of Escape from Mr. Lemoncello's Library When the mysterious Dr. Fell moves into the abandoned house that had once been the neighborhood kids' hangout, he immediately builds a playground to win them over. But as the ever-changing play space becomes bigger and more elaborate, the children and their parents fall deeper under the doctor's...