Jealousy flares after the headmistress of an elite boarding school for girls becomes obsessed with a new student.
| Actor | Role |
|---|---|
 Eva GreenMiss G | Miss G |
 Juno TempleDi | Di |
 María ValverdeFiamma | Fiamma |
 Imogen PootsPoppy | Poppy |
 Ellie NunnLily | Lily |
 Adele McCannLaurel | Laurel |
 Zoe CarrollRosie | Rosie |
 Clemmie DugdaleFuzzy | Fuzzy |
 Sinéad CusackMiss Nieven | Miss Nieven |
 Helen NortonMatron | Matron |
 Deirdre DonnellyMiss Lacey | Miss Lacey |
 Barbara AdairMiss Cairns | Miss Cairns |
| LLorna WaldronSandra du Toit | Sandra du Toit |
| AAlistair RumbleFerry Skipper | Ferry Skipper |
| KKitty McLaughlin-DunningSmall Dreg | Small Dreg |
| JJonathan WhiteShopkeeper | Shopkeeper |