Jealousy flares after the headmistress of an elite boarding school for girls becomes obsessed with a new student.
Eva Green
as Miss G
Juno Temple
as Di
María Valverde
as Fiamma
Imogen Poots
as Poppy
Ellie Nunn
as Lily
Adele McCann
as Laurel
Zoe Carroll
as Rosie
Clemmie Dugdale
as Fuzzy
Sinéad Cusack
as Miss Nieven
Helen Norton
as Matron
Deirdre Donnelly
as Miss Lacey
Barbara Adair
as Miss Cairns
