The Witches of East York

S15 E14: Farmer Gunther Wenders is taken into custody for trying to drown his woodland neighbor, Minerva West, a self-confessed witch. Murdoch considers the case a disagreement between a superstitious man and a delusional woman. But when Minerva and her fellow coven members cast a spell outside the station house, Wenders suddenly dies in the cells, and Murdoch must explain how.