(also known as Sex Psycho and The Demon in Miss Jones) is a 1970 pornographic horror film written and directed by Walt Davis and starring Alex Elliot, Walt Davis, Charles Lish, Rick Cassidy, John Holmes, Andy Bellamy, Susan Wescott, and Sandy Dempsey.

Nick ignores his wife's advances (not for the first time) and berates her appearance, housekeeping, and cooking before heading to a business appointment, mentioning on his way out that they have been invited to dinner at Eva Blue's house.

As the trio moves the coffin, two of Eva and Jerry's swinger friends drop by unexpectedly, and insist on group sex.

After the orgy, Marshall and the couple leave, and Elise (who Nick and Eva intend to kill) arrives for dinner.

Eva spins a lie about getting a call from her ill mother, and pretends to leave while Nick convinces Elise to have sex in one of the bedrooms.

As Elise chokes to death on Nick's severed genitalia, Eva and Marshall go into hysterics, and run away screaming.

was praised by Fred Adelman of Critical Condition, who wrote "Davis (who appears as Jerry) liked to give his audience some shock value along with the hardcore sex, but theatergoers at the time were not prepared for it.