Midwinter of the Spirit (2015)

S1E2 Episode 2

Merrily embarks on a search for the truth following a murder, a vandalized church, and the apparent suicide of a priest. She begins to suspect that a Satanic cult might be involved and seeks guidance from Huw Owen, who leads her through a lesser exorcism ceremony. However, she is unprepared for the shocking revelations that await her.