Tuppence Middleton as Rebecca Holland

Jane Wood as Ida Tremlow

Evie Templeton as Grace Holland

Matt Stokoe as Henry Holland

George Keeler as Dave Garfoot

Sally Plumb as Marjorie Garfoot

Ralph Ineson as Jocelyn Abney

Anton Valensi as George Furleigh

Catriona Yuill as Callie Furleigh

Alexa Goodall as Bryony Furleigh

Rosalind March as Miri Tremlow

David Langham as DI Hythe

Luc Ineson as Derry Nash

Robert Goodman as Graham Nash

Marc Hockley as Villager

Simon Bundock as Village Boy

Joe Citro as Village Boy

Rachael Joanne Brown as Goats Head Fire Dancer

Sophie Romer as Villager

Yasmin J. James as Village person / cult donkey (uncredited)