The Legend of Hell House (1973)

Paranormal investigator Dr Barrett (Clive Revill) is hired to investigate a notorious haunted house owned by a Mr Belasco. Everyone else who has been in the house has either died or gone mad but Dr Barrett still leads his team in anyway including his wife Ann (Gayle Hunnicutt), and two mediums Ben (Roddy McDowall) and Florence (Pamela Franklin).

Whatever is haunting the house doesn't waste much time, the team soon find themselves under attack including poor Florence who gets attacked by a possessed cat and Dr Barrett is attacked by various cutlery in a terrifying poltergeist event. Ann meanwhile has become sex obsessed...

The film is very frightening indeed but the danger is mostly implied with atmosphere and sound without overdoing the special effects. This makes the feeling of creepy menace in this film and house all the more powerful.