oh, knowing sloane and rambaldi it will be some diabolical creation that scares us all even more than that thing in firebomb...but what I want to know is how he knew it was there~
of course sark knew. He caught Sydney when she was trying to retrieve the antidote for Vaughn. The other big hint that he knew was in Phase One when he told her that everyone had secrets and the new director would find them out.