My collection of dream tales

dream 1:I was taking a test and the kid who was a bout two feet away from me says that he had an invisible friend giving him all the answers. I didn't believe him. Until the friend made himself visible to me and told me some answers. Thats all I remember.
dream 2: There was a serial killer delivering books to my school. He was smoking a cigarette and talking to me and some other kids. They started aggravating him but because of special pills he didn't do anything to them. But he sometimes didn't take his pills and would kille people. I don't remember how he did it or how many times he killed in the dream.