Return To Groosham Grange - Anthony Horowitz

Someone is trying to destroy David Eliot's school.

A year ago, he'd have been happy to see the end of Groosham Grange and its ghoulish teachers. Now, he's on course to win the Unholy Grail, a cup of magical power presented to the star pupil. But a series of suspicious mishaps sees the gap between David and new boy Vincent King narrow alarmingly.

Someone, it seems, is trying to stop David winning – and, worse, threatening Groosham Grange itself!