"It was Semirhage"... Mmm, wow that makes sense. You know, the Forsaken did want to kill Asmodean, and he often mentioned her as being a great source of his fear. She's also the psycho murderer type.

Seriously, this is ridiculous. There are fifty characters who fulfilled the 'revelation'. As if Wilson would have said 'holy crap, I can't believe it' if RJ said it was Mesaana, Lanfear or Taim. To reason out that Slayer automatically flies to the top of the list based on this 'information' is hilarious.

I could write a whole post on why is makes 'sense' that it was Graendal, and it would be no worse than any other theory out there. It's also laughable to think that it took the rare reader, or perhaps a single unique one, to figure out this murder.