I think an even bigger question is who planted the bomb and tried to frame Brody? It had to be somebody with CIA clearance. Langley is one of the most secure places in the world, they wouldn't let anybody in.

It's pretty obvious to me that Estes is the mole but I'm still not convinced that Galvez has nothing to do with it. There's something about him that I just don't trust.

Perhaps Estes moved Brody's car; in order to make it look less suspicious to Carrie and Saul, Estes had to die in the explosion. Remember Estes wanted Brody dead and Quinn said no. What better way to ensure Brody dies in some way than to plant a bomb and kill dozens of intelligence officers? Also, that suicide video Brody made in the first season made it onto the news very quickly. Far too quickly for it to be an afterthought by Al Qa'eda. So whoever moved Brody's car is working with Nazir (or Nazir's people seeing as he's dead). Now Galvez would be my prime suspect; he blends into the background but is always there during important missions, he's always there when a mission has failed due to a leak.

Talking of Quinn, I'm not sure what his motives are. Is he working for Nazir? Is he working for a rival of Nazir's, or a private contractor? I don't think he's truly with the CIA, I think he's a double agent.

So my questions for discussion are:
1. Who did Brody give the suicide tape to after making it? How did it end up in Beirut and what was the Hezbollah commander doing with that tape? How did AQ get hold of it?

2. Why is Brody being set up, and by whom?

3. To what extent is the CIA compromised with rogue agents?

4. Was the bomb at the CIA a diversion? Was it planted to take out high ranking and experienced officers, so that another, bigger plot can pass under the radar?

5. Why didn't Quinn kill Brody when he had the chance? Why the change of mind, and why threaten Estes if he tries to put a kill on Brody? Is Quinn working for Nazir's group? If so, why didn't he reveal himself to Brody? He was so sure that he was going to kill Brody then he suddenly changes his mind. Why?