Gothic House

We were inspecting a house we might like to rent and went up some wooden stairs into a 60s style kitchen. The current owners - a little old couple - were at home and offered us a glass of orange juice. They needed to go out so they left us to finish looking around. We went into a narrow hallway and found a door that didn't look like a door. I don't think we were supposed to go in there, but we went in and up some stairs. The room we found had very high ceilings and gothic looking furniture with the only light coming from the fireplace. There was a pointy black cat which was possessed and started following us around. We decided to leave and went back down the stairs - the cat followed us. Then we realised that the owners hadn't left, they were actually dead. We ran to the car to leave, and the cat continued to follow us...