Winterfell receives a letter from Robb's camp informing Bran and the Freys of Robb's victory over Ser Stafford Lannister, but noting the Freys' uncle died in the battle.
Jojen visits Bran immediately after, and Bran acknowledges that this letter confirms Jojen's green dream to be true, metaphorically speaking of course.
Bran requests Jojen share his dream about Winterfell, and Jojen states that the sea will come to the castle and drown several of its people. This is a bit hard to swallow, though, since Winterfell is hundreds of miles inland.
A few days later, Rodrik returns with his new prisoner, the aptly named Reek. Bolton's illegitimate son, Ramsay, was killed, but not before he starved Lady Hornwood to death after their "legal" marriage. When they found her, she had eaten her own fingers.
Rodrik is honorbound to keep Reek alive until Robb's return, so the prisoner can account for Ramsay's crimes.
Later, Meera, Jojen, and Bran discuss how absolute Jojen's green dreams are. Meera thinks Bran and the others should fight the visions, but Jojen is resolute that what he has seen cannot be altered.