'Game of Thrones' recap: Don't Lose the Hostages
North of the Wall, the rangers attack a group of wildlings. But one of them is a girl named Ygritte, and Jon Snow can't bring himself to kill her. So he pretty quickly gets cut off from the rest of his squad, trapped in the snowy wilderness with a wildling lady.
Arya listens in on a discussion between Tywin Lannister and Littlefinger and possibly gets away without Littlefinger recognizing her. But when she steals a note, she gets caught by Amory Lorch. I know that name because she immediately tells that name to Jaqen, who kills him just as he's opening the door to Tywin's room.