As for Marianne- we don't know she's necessarily working for the terrorists. I'm guessing she was talking to that defense contractor company.
I thought Driscoll's teleconference was with the CEO of the defense contractor? If so, why would Marianne call them? Maybe I missed something there.
This last episode was a good one. However, I wish there wasn't a mole in CTU this year. Seems like there is always a mole.
I'm guessing that at some point down the road we'll find out Heller is a bad guy. If someone is going to turn out to be a traitor, I think it will be him. It would put his daughter in the middle also.