The Dark at the Top of the Stairs
Starring Robert Preston, Dorothy McGuire, Eve Arden, Angela Lansbury, Shirley Knight, Lee Kinsolving, Frank Overton, Penny Parker, Robert Eyer, Robin Warga
It's a drama and romance movie, and has a rating of 7.3 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Brazil.