Scarlet and Ivy return to Rookwood School - in their second spine-tingling mystery adventure! The twins have been reunited, but are definitely not out of danger... Evil Miss Fox may have fled the scene, but headmaster Mr Bartholomew is back, imposing a reign of terror with his threats of epic punishments should any of the pupils step out of line. When possessions and food start going missing, Scarlet knows she must uncover the truth to clear her name.