A girl moves in with a new foster family and begins to attend the same school as her new foster brothers. She soon learns that something strange is going on at her school.
The show was created by Gillian Cross and was based on children's books of the same name that she wrote. The series was originally made for the CBBC and won the BAFTA Children's Award for Best Drama in 1997.
The series starred Frances Amey as Dinah Glass and Terrence Hardiman as The Demon Headmaster.