It starts with the snap of buttons coming undone, and the whisper of fabric brushing bare shoulders: Marianne (Jessica Brown Findlay), weary after a day’s journey to her new home with her daughter Adelaide (Anya McKenna-Bruce), has retired to the bedroom and begun slowly undressing, though she needs a hand with the final clasp on her dress. “Would you?” she asks her husband, Linus (John Heffernan), as he walks in on her. He complies in dutiful terror, then turns away as if he’s been caught doing something he shouldn’t. Marianne respects his twitchy anxiety, but her disappointment is obvious. Sexual frustration is the price she pays for marrying a vicar. That and all the angry ghosts.