The Demon Headmaster (Demon Headmaster)

Gillian Claire Cross (born 24 December 1945) is a British author of children's books. She won the 1990 Carnegie Medal for Wolf and the 1992 Whitbread Children's Book Award for The Great Elephant Chase. She also wrote The Demon Headmaster book series, which was later turned into a television series by the BBC in January 1996; a sequel series was produced in 2019.