George R R Martin's A Clash of Kings #4

Arya continues to travel north to the Wall, and makes the acquaintance of a most unusual character - Jaqen H'ghar- but when the recruits for the Night's Watch are stopped by the Gold Cloaks, a confrontation seems inevitable...
Meanwhile, Catelyn Stark must come to terms with her son, Robb, is now also the King in the North - and that sometimes family and politics conflict.