England, 1969. The fascinating Abbie and the troubled Lydia are great friends. After an unexpected tragedy occurs in the strict girls' school they attend, a mysterious epidemic of fainting breaks out that threatens the mental sanity and beliefs of the tormented people involved, both teachers and students.
Maisie Williams
Lydia Lamont
Maxine Peake
Eileen Lamont
Greta Scacchi
Miss Edith Mantel
Monica Dolan
Miss Martha Alvaro
Mathew Baynton
Mr. Hopkins
Florence Pugh
Abbie Mortimer
Joe Cole
Kenneth Lamont
Morfydd Clark
Miss Pamela Charron
