With a battle for power brewing, Helen (Naomie Harris) comes face to face with what she’s been searching for since arriving on the island. When the sisters are separated, Tallulah (Charlotte Gairdner-Mihell) witnesses a gruesome act of violence, and Ellie (Nico Parker) learns of their mother’s hidden agenda. As tensions reach a fever pitch for all those on Osea Island, Helen and her girls make a desperate final attempt to escape.

Written by Kit de Waal, Dean O’Loughlin and Dennis Kelly; Directed by Philippa Lowthorpe.