Merrily is on a quest for answers after a murder, a desecrated church and a clergyman's apparent `suicide'. She suspects a Satanic group may be at work, and is guided through a ceremony of lesser exorcism by Huw Owen, but nothing can prepare her for what she is about to uncover.
Casts:
Anna Maxwell Martin, David Threlfall, Ben Bailey Smith, Siobhan Finneran, Leila Mimmack, Sally Messham, David Sterne, Nicholas Pinnock, Kate Dickie, Simon Trinder, Will Attenborough