Someone in the House (1981)

I Love a Rainy Night With Anne's boyfriend Joe off in Europe on a grant, it seems like the perfect time for she and her colleague Kevin to finally write that English textbook they've been thinking about. The old mansion his parents recently bough in Pennsylvania seems like the perfect place. And at first, Grayhaven does seem like the perfect place. With his recently divorced Aunt Bea playing housekeeper for them, and her new boyfriend Roger O'Neill picking intellectual fights, they have a friendly quartet in residence. But soon Bea and Anne are puzzled by the strange noises echoing from Kevin's room at night...and then by what they see at his door...Everyone has their own theory about what's happening, from ghosts to psychic forces but the truth is far stranger than anything any of them could conjecture...