Verin killed Asmodean. I know that no one else thinks this, but hear me out, please. I think this problem is being approaced from the wrong angle, we should be asking why Jordan would hide the killer's identity. We all know that he was killed, and we can all name a number of people we think might have killed him. It wouldn't come as much of a surprise to us to find out that any of these killed him, so why the suspense? Because the killer is one of the "good guys" who allegience Jordan wants to keep secret. If we look at our collection of "good guys", who's the most likely? Verin. There's definatly someting odd about her, and she was around Caemlyn at the time. Finally, we don't know she's "good", as we haven't really seen her thoughts much.