Had a friend back in college who had a friend who was constantly visited by shadow people. He’d open a closet door and they’d be in there and tell him another friend was in an accident.
Great stories, but the same guy believed an old college professor was a witch. I had the professor for a class and they were quite normal.
“I had the professor for a class and they were quite normal.”
If your professor was plural, which is what “they” is, then he was not quite normal.