The Conqueror Worm (1968)

(England, 1645)
IMDb
Wiki

Also known as The Witchfinder General, this film features Vincent Price as just that, a professional witchfinder who is more then just a little bit corrupt and amoral. What you want from a film like this is Vincent Price menacing and torturing people, you get a little bit of that, but not enough. Price's character interrupts the love story in the picture, by bedding the lase, and having her uncle and long time guardian hung for witchcraft. Because of these actions the lase's lover must hunt down and kill the witchfinder and his assistant. Kind of slow, and ends rather odd.