Pay the Piper: After a man resembling Murdoch is murdered, William must find the killer before the killer finds him. Violet Hart's scheming father returns, and Crabtree and bride-to-be Effie visit her hometown for him to meet his new in-laws. But he's more intrigued by the community's mystical reputation and the possibility of aliens, and his interest turns investigative after Effie's maid of honor goes missing.