Return To Groosham Grange

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!"