Sir Edward Grey, Witchfinder: The Mysteries of Unland (Sir Edward Grey, Witchfinder: The Mysteries of Unland #3)

Local officials present a façade of normalcy, but the Witchfinder knows there's something wrong with the denizens of Unland, and he's starting to uncover what that has to do with the dying founder of the town and the elixir he invented that put the town on the map...