Probably the scariest dream I have ever had was one where I murdered myself. I was all alone except for myself and I was hunting myself trying to kill myself. It looked like me, but a little off. I think it was an id. But it just walked after me, not run, not shuffle, just walk. The first time I had it I was afraid to look in the mirrior for two weeks. I have it every once in a while, and when I do I sleep walk. One time I had it and I woke up about a mile from my house in the middle of the night.