Strange Dreams About Murders

It was about 6-8 months ago that I had these dreams. I hadn't thought about them in a while and I normally don't have dreams like this.

The first one involved a swimming pool. I was there with a bunch of people, most of which I didn't know. I remember swimming inside the water and finding a dead Asian girl floating underneath. I came up screaming. The last thing I remember from the dream was driving in the rain to go to an airport.

In the other dream, I was a school girl, walking to school with a girl who was apparently my sister. We were walking in a bad neighborhood, and I'm pretty sure I was fairly young, maybe 12 or 13.

I remember getting into the back of a police truck because, as my "sister" told me, the police gave lifts to kids for school. There was a man in the driver's seat with a beard (who actually resembled the dad from Family Ties), and a woman sitting next to him. I remember driving along a huge bridge for a while and looking out at huge city buildings. There was screaming and when I looked up, the man in the driver's seat had pulled out a huge knife and was stabbing the woman next to him. He turned around and had this indescribable crazed look in his eyes. Thinking about it now scares me. He slashed at me and this is when I woke up.

I come from Australia, and murders aren't exactly common here, or at least where I live. I don't know if these dreams were psychic or whether or not I have a secret fear of Michael Gross, but if anyone could explain to these dreams, or has any information about murders similar to these I'd be really grateful.

Sorry if they're a bit vague. Thank you for taking the time to read.