Charlie and the Chocolate Factory meets Clue when six children navigate a mansion full of secrets--and maybe money--in this "delightful gem" (School Library Journal, starred review) with heart.

Sweet, shy Tabitha Crum, the neglected only child of two parents straight out of a Roald Dahl book, doesn't have a friend in the world--except for her pet mouse, Pemberley, whom she loves dearly. But on the day she receives one of six invitations to the country estate of wealthy Countess Camilla DeMoss, her life changes forever.

Upon the children's arrival at the sprawling,...