I am a chronic insomniac. This not only gives me more time to pursue web-sleuthing, but it also pretty effectively dulls my brain when it comes to understanding all the technical "stuff" . (I like to think that's the only thing wrong with my brain ! But anyway, I just want to add a bit to the less technical and more emotional side - for me, one of the things which turns this tragedy into something even more appalling is BK saying to Xana "Don't worry, I'm going to help you." Beyond creepy and evil. Yes, I do believe that BK is guilty.