Dream of

I was watching a bird trying to get through a vent on top of a house that reminded me of my grandparents house (I could see the back yard). It was dim outside like dusk or a storm and all of a sudden I was inside the vent or air duct that the bird was trying to get into. It was pitch black and I was trapped and heard a frightening whispering growling voice. I don’t remember what it said if was real words at all. I immediately connected the voice to someone that works at the same place as me ( never really liked me) and who used to be a big boss but has sense lost that position. I felt really scared of the voice and then it was over.