zombeh-kitteh: about your first point, Bill being so paranoid about his tower I don't see him doing anything to jeopardize it.

I don't think this has been discussed, but one thing that comes out of this chapter is: Tanya did not read Kalani's journal, obviously. So, what was she trying to say to Michael before being (conveniently) knocked off (an popping up just fine later)? It could have been simply "Did you read all of the journals? Because I can't find Kalani's", but since she was talking about performing some zombie research before, it might be something else she figured out by reading all journals and putting all the pieces together. Let's hope she says what it is already, after days spent doing nothing in Irwin.