Game of Thrones, Season 2

[Robb Stark learns that Theon Greyjoy has betrayed him and seized Winterfell]

Robb Stark:
This cannot be true.

Lord Roose Bolton:
We've had ravens from White Harbour, Barrowtown and the Dreadfort, my lord. I'm afraid it is true.

Robb Stark:
Why? Why would Theon-?

Roose Bolton:
Because the Greyjoys are treasonous whores.

Robb Stark:
My brothers?

Roose Bolton:
We've heard nothing of them...but Rodrik Cassell is dead.

Catelyn Stark:
[angry] I told you,never trust a Greyjoy!

Robb Stark:
I must go north at once.

Roose Bolton:
There's still a war to win, Your Grace-!

Robb Stark:
How can I call myself 'King' if I can't hold my own castle?! How can I ask men to follow me if-?!

Roose Bolton:
You are a king! And that means you don't have to do everything yourself.

Catelyn Stark:
Let me go and talk to Theon-

Robb Stark:
There will be no talk, he will die for this!

Roose Bolton:
Theon holds the castle with a skeleton crew. Let me send word to my bastard son at the Dreadfort; he can raise a few hundred men and retake Winterfell before the new moon. We have the Lannisters on the run; if you march all the way back north now, you lose what you gained. My boy would be honoured to bring you Prince Theon's head.

Robb Stark:
Tell your son Bran and Rickon's safety is paramount. And Theon...I want him brought to me alive. I want to look him in the eye and ask him 'Why?'...and then I will take his head myself!