I recall seeing this in the mid-80s, on TV, in what I believe was some kind of made-for-TV one-off anthology movie (although it’s possible it was an episode in a series, like Tales from the Darkside, or the like).
I believe there were three segments, but the one I most clearly remember was about a young boy who was being psychologically tormented by his babysitter. After his parents would leave, his babysitter (I want to say it was a teenage girl) would spend the entire night trying to scare the crap out of him, pretending she was an intruder, pretending she wanted to kill him, etc. I remember one scene where he locked himself in the bathroom, and she was standing outside with a knife, or something, telling him that she was going to murder him, and then making like everything was fine when his parents came back. I can’t recall why he didn’t talk to his parents about this – if he did, they didn’t believe him – so instead he asks this doll he has (I think it was a magician) for help. Anyway, at the end, the magician comes to life and kills the babysitter.
I found it very unsettling at the time – I think I was about the same age as the boy in the story.
Anyone have any ideas?