I think that one thing that I haven't read was that now we know there are OBVIOUSLY two traitors in the tower. One was sent to Burt's Room to create a distraction with the alarm. (Anyone in the tower would know there was a alarm on that door and setting it off would not be an accident). And the second traitor would be there to kill Pippin. Classic distraction and assassination.

Other notes.

Hope is probably not dead. Why kill someone who can't ID you?
Stephen is an obvious red herring.
Whoever killed Pippin probably tried to kill Durai. Killing off the evidence of being a traitor. (I'll make another post about this in the Theories section later.)