House of Horrors (also known as Murder Mansion, The Sinister Shadow and Joan Medford is Missing) is a 1946 American horror film released by Universal Pictures, starring Rondo Hatton as a madman named "The Creeper." It was filmed in September 1945.
An entire series of Creeper movies had been planned, with this being the first, and The Brute Man being the second. However, the sudden death of the main star, Rondo Hatton, prevented any future pictures from being made. It is not known how many films were planned.