"Do you think he means to betray us to the Lannisters, my lady?" Robett Glover asked gravely.
Catelyn sighed. "If truth be told, I doubt even Lord Frey knows what Lord Frey intends to do.
He has an old man's caution and a young man's ambition, and has never lacked for cunning."
"We must have the Twins, Mother," Robb said heatedly.
"There is no other way across the river. You know that."
"Yes. And so does Walder Frey, you can be sure of that."
That night they made camp on the southern edge of the bogs, halfway between the kingsroad and the river.
It was there Theon Greyjoy brought them further word from her uncle.
"Sir Brynden says to tell you he's crossed swords with the Lannisters.
There are a dozen scouts who won't be reporting back to Lord Tywin anytime soon. Or ever."
He grinned. "Sir Addam Marbrand commands their outriders, and he's pulling back south, burning as he goes.
He knows where we are, more or less, but the Blackfish vows he will not know when we split."
"Unless Lord Frey tells him," Catelyn said sharply.
"Theon, when you return to my uncle, tell him he is to place his best bowmen around the Twins,
day and night, with orders to bring down any raven they see leaving the battlements.
I want no birds bringing word of my son's movements to Lord Tywin."