Part of the show Big Bang, Ghosts & The Paranormal
I lived in a house where the dining room which was always colder than all the other rooms, and both my wife and I could see something in our peripheral vision. Then one evening I was sitting in this room, and our cat jumped up looked spooked and I suddenly felt cold, and a presence.
It could have been something, but lots of people feel presences in houses. I would need to see a lot more to be convinced.