ent 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 roo

Anthony Horowitz (born 5 April 1955), is an English author and screenwriter. He has written many children's novels, including The Power of Five, Alex Rider and The Diamond Brothers series and has written over fifty books. He has also written extensively for television, adapting many of Agatha Christie's Hercule Poirot novels for ITV series. He is the creator and writer of the ITV series Foyle's War and the series Midsomer Murders.