Julia Brown as Laura

Nathaniel Martello-White as Robert

Charles Aitken as James

Mary Woodvine as Mary

Rupert Turnbull as Isaac

Kaisa Hammarlund as Miranda

Deepica Stephen as Saanvi

Nila Aalia as Heather

James Harper-Jones as Older Isaac

Alice Handoll as Bridgette

Matthew Allen as The Creature

Phillipa Flynn as Louise

Lexi Austin-Jones as Alex

Stella Gonet as Ava

Lucy Doyle as Dr. Alice Way

Ako Mitchell as Samuel Jacobs (uncredited)

Asha Soetan as Sister (uncredited)