Groosham Grange and Return to Groosham Range(2-in-1) by Anthony Horowitz

Two ghoulish chillers from an award-winning author – in one fang-tastic volume! David quickly discovers that his new school, Groosham Grange, is a very weird place indeed. New pupils sign their names in blood; the French teacher disappears every full moon and the assistant headmaster keeps something very chilling in his room…And that’s just the first year. In his second year, David is on a course to win the Unholy Grail – but something is trying to stop him from winning…This bind-up combines Groosham Grange, the Lancashire Children’s Book of the Year, with its gripping sequel, The Return to Groosham Grange.;From the author of the two-million selling Alex Rider series!