When David Elliot is expelled from his boring school, his parents send him to Groosham Grange to knock him into shape. But when he arrives at the gothic castle on remote Skrull Island, he discovers Groosham Grange is an unusual sort of school: from signing the register in blood, to the creepy teachers - pallid Mr Kilgraw, Mrs Pedicure bandaged head to toe, hairy Mr Leloup who disappears every full moon. David teams up with fellow pupils Jeffrey and Jill to plan his escape. But can anyone ever escape Groosham Grange?