nightmare

It's 3am. I was shaken awake by a dream in which my brother confessed to murdering his fiance and mother of his unborn child. It was so real.
This wouldn't be as upsetting to me if earlier this week, a friend of ours from back home myspaced me to tell me that he was arrested for domestic violence.
What is he doing?
In the dream I told him to turn himself in- that he could enter an insanity plea - but that he had to turn himself in immediately so that he could get out sooner.
How can I help him? What can I do for him if I'm so far away?
It's 3am and I'm sitting here sobbing as I type. How can this dream have upset me so much?