Robb Stark: This cannot be true.
Roose Bolton: We've had ravens from White Harbour, Barrowtown and the Dreadfort. 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 Cassel is dead.
Catelyn Stark: 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 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'll 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!
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From: Game of Thrones