Who did you kill and how is that person involved in your life? If you don“t recognize the person, the dream may symbolize killing off an unwanted part of yourself.
* Most of the pictures you can find here are not mine. I have no rights to them. Please note I only post them because I find them beautiful. Most of the time I edit them. As far as it's possible I will try to set a click-through link to the author's gallery/site or give credits in other possible way.