Sent to Groosham Grange by his parents, David Eliot quickly discovers that his new school is a very odd place indeed. New pupils are made to sign their names in blood; the French teacher disappears every full moon; and the assistant headmaster keeps something very chilling in his room.

Someone is trying to destroy David Eliot?s school. A year ago, he?d have given anything to see the end of Groosham Grange and its ghastly, monstrous teachers. Now, he?s on track to win the Unholy Grail, a cup of magical power rewarded to the star pupil. But a series of suspicious mishaps has the space between David and the new boy, Vincent King, narrowing at an alarming rate. It seems that someone?or some thing?is trying to stop David from winning?and, worse, threatening Groosham Grange itself! Blockbuster bestselling author Anthony Horowitz will keep readers up at night with this ghoulishly gratifying sequel to Groosham Grange .