The Terror

The Terror is a 1963 American horror movie about a French soldier (Jack Nicholson) who discovers a mysterious castle and an even more mysterious woman (Sandra Knight), who may or may not be a ghost. The film also starred Boris Karloff and Dick Miller.

Plot Summary
Duvalier (Nicholson) discovers that Helene (Knight) is being hypnotized by a peasant witch (Dorothy Neumann) into haunting the Baron (Karloff); Helene is a double for Ilse, the Baron's dead wife. The hypnotized Helene tries to convince the Baron to kill himself so that they can be together. Duvalier learns that the witch is the mother of a man who was killed by the Baron many years before, and is out for revenge.

Unfortunately, the witch learns too late that Eric killed the Baron and not the other way around; after years of pretending to be the Baron, Eric has gone mad and truly believes that he is the man he killed. A battle takes place in the flooding castle between Helene, Eric, and the Baron's trusty servant Stefan (Miller). Duvalier arrives but is only able to save Helene. As he carries her to safety, she suddenly decomposes into a skeleton, and Duvalier realizes that she was really Ilse's ghost all along.