Soooooooooooooooooo.....I think by now the consensus is that grandma orchestrated quite the intricate death plot on the king. But how is Little finger going to use Sansa to his benefit? Also noticed how Tywin whispped away the young boy from Cersei so he would realize that his mommy is not the one to advise him. Sam made a bad move I think placing the baby where they cannot be protected. Arya is a quick learner, very fearsome that one is (Yoda voice). It seems that the Lannisters are concerned too much about the enemy around them that they are not picking up on the enemy within. Best season so far IMHO!

Never read the books so this is all conjecture.

I loved Jaime telling Tommen that he'll make sure he stays ok, considering he's 0-3 in making sure kings stay ok.

Tywin is definitely trying to guide Tommen before Cersei can get her claws into him. The main concern for Tywin now is locking down the rule, because the Lannisters have power through the Baratheon children. Should something happen to Tommen, it would strengthen Stannis' claim, as many would prefer an uncle over a daughter. Plus Myrcella is in Dorne.

The Littlefinger thing is definitely interesting. He had a big thing for Catelyn Stark and cannot be happy with what happened to her. If his "rescue" of Sansa (Tyrion's wife) becomes public, he loses support of the Lannisters and the Crown, which is where is has amassed all of his power from so far. He really has no military or banners to call should they revoke his lordship, so it seems like this is a very risky play for him.