The Castle of the Living Dead (1964)

At first sight, this looks remarkably humdrum, but it's a bit better than that. Christopher Lee's outwardly benign "Count Drago" invites a travelling troupe of performers to stay and perform at his castle. Before long, things start going drastically wrong for them. All humankind is reflected in this film - we have a witch, a dwarf, a deaf mute and lots of creatures that look like the product of the taxidermist's art - but are they really? It's eerily told, very much in the Hammer mould, this story - with quite a bit of suspense as we gradually get to the truth. Keep an eye out for Donald Sutherland as the policeman with a little added extra.