The haunting drama, starring Maisie Williams (Arya, Game of Thrones), charts the outbreak of mass hysteria at an all-girls school in 1960s Britain.
Williams stars as Lydia, a whip-smart and angst-ridden teenager who lives in a cramped hairdressing salon with her brother Kenneth (Joe Cole), and emotionally comatose mother (Maxine Peake). To overcome the boredom and oppression of school and their teenage lives, Lydia and best friend Abbie (Florence Pugh) engage in a series of secret rituals. However, when their bond is broken, Lydia’s world spirals into chaos and strange things start to happen.
