A young teacher takes a job at an unusual private school where she soon discovers that the boys have a sinister power over the girls. As the boys behaviour becomes increasingly threatening she uncovers the source of the girls fear; an ominous locked door at the back of the classroom.
David Bamber
as Headmaster
Madeleine Sims-Fewer
as Miss Byrd
Ben Kerfoot
as Patrick
Haruka Abe
as Seven
Anna Hogarth
as Five
Alfie Stewart
as Hugo
Laura Fedorowycz
as Miss Watson
George Parker
as Martin
