B&A Writers: What Would Your Book Cover Look Like If You Got To Choose?

I guess it would be black in colour and it would have a picture of three to four friends taken from behind and one of them holding a knife to the others back and just about to stab her. Ok, that sounds very teeny bopper. Just to clarify, it's a murder mystery, not a high school backstabbing drama thing. And down in cursive font, red color, would be the title 'No Friends of Mine' and of course my name right on top :D