What does it mean to dream of a ghost and a murder of crows?

I always have pretty vivid dreams, last night is just one of them. I was at my unit, living with friends whom I dont actually live, and a miniture sausepan on my sink lifted up and started to vibrate. Nobody but I noticed and I said to the rest,that the place was haunted.Then my chest of draws came out by themselves and I was feeling scared by it, I felt there was a message the ghost was trying to giv me cos earlier on in the dream I was doing a puzzle of some sort or just randomly writing down things on a newspaper and the ghost made that newspaper fly to me like he wanted me to find what it was he was trying to tell me on something I had written already. I couldn't find what it was. I get a knock on the door, and I knew it was the ghost, he had become visible I could see his shadow out the curtains, I didn't want to answer. I answered anyway and there was a man, boy really around my age (19-25) laughing. It was the ghost. I saw someone else behind him and I had a look and it was him again.He was in double! I shut the door afraid. I felt that he wasn't malicious but he was menacing. Just a menace. Laughing wildly like a happy boy. I've met him once before in another dream a few months ago but I didn't see his face, we were in a dark cave by the ocean and he gave me the same feeling. But I feel he is there as a warning. But I dont know. Then in the dream last nite, I went outside and I seem to be the only one aware of all the different stuff going on, it seemed the world was coming to an end or morphing, something radical was happening anyway. And a Murder of crows came flying down, but around them a black smoke or cloud was surrounding them. Anyone got any ideas? Sorry I cant explain to well.