Sophie and Katy should be the worst of enemies - witches and witch hunters just aren't supposed to be friends! So they've got to try and keep their special powers a secret from their friends and family if they want their BFF-dom to last. But when Sophie's grandmother goes missing in mysterious circumstances, the girls are willing to try anything to find her. Even if it means risking revealing themselves. Can they keep their magic undercover and get back to Turlingham Academy in one piece?