A single mother and country vicar comes to believe that gruesome murders are the work of Satanists.
Anna Maxwell Martin as Merrily Watkins,
David Threlfall as Huw Owen,
Ben Bailey Smith as Lol Robinson,
Sally Messham as Jane Watkins,
Nicholas Pinnock as Bishop Mick Hunter,
Kate Dickie as DCI Annie Howe,
Leila Mimmack as Rowenna Napier,