Distraught, confused, and half-wild with fear, Sarah Carter emerges alone from the Appalachian cave system where she encountered unspeakable terrors. Unable to plausibly explain to the authorities what happened - or why she's covered in her friends' blood - Sarah … Shauna Macdonald, Natalie Mendoza, Gavan O'Herlihy, Josh Dallas, Anna Skellern, Saskia Mulder, Douglas Hodge Added on Amazon Prime 2023-03-31. Added on ZEE5 2023-02-14. Youtube Trailer