The wealthy Edward Osborne and his young wife Cathy live in a huge house. When his employee Michael Fox comes to his home to close some business, Cathy invites him to stay and play with her in an Ouija Board and the reluctant Michael agrees. They contact a spirit called Ben that helps them to find a hidden Madness Room in the house. They find the room and enter inside, where they find hidden secrets.
"Madness Room" is an excellent episode of "Tales from the Darkside". The supernatural tale is very well written, with a simple but great screenplay with explanation for the events. My vote is eight.
Title (Brazil): "Madness Room"