Winter. Helen (Naomie Harris) surprises her two daughters, Tallulah (Charlotte Gairdner-Mihell) and Ellie (Nico Parker), with a trip to Osea Island for Ellie’s birthday. After finding that the cottage she booked is suspiciously no longer available, Helen scours the island for a place to stay, but finds resistance at every turn.

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