i had really awful dreams, worse than yours.. I was actually doing the killings, the abuse and things like that (i'm not an axe wealding murderer by the way..) and it got so bad i made myself scream in my dreams so i could wake my self up, or someone else in my house would hear me to wake me.
It got a vicious cycle where i was afraid to sleep, so my mind went into overdrive to keep me awake so i couldnt sleep at all. So I drank to make myself tired, and eventually i'd fall asleep, but alcohol made my dreams worse, and then in the morning i felt rough as, so i was sleepier but my mind didnt want me to sleep and it just kept over and over, really hard to break out of.
In the end I found that listening to my faourite relaxing albums, things like norah jones, dido, the softer amy winehouse tracks and a bit of jazz stuff helped me fall asleep but also dream of nicer things. I had to think of holidays, of the sea, of happy times with my boyfriend or my mates and really completely relax and empty my head of everything. Its really tough and it takes a while to master so all the best with it, but it can be done.
Oh, and no cheese or nuts before bed. Bananas help sleeping tho apparently!