Jon makes it to Castle Black, where Maester Aemon starts healing his injured leg. The place is a shadow of the shadow of its former self that it formerly was. The wildlings have been running distractions and Jon tells the brothers to stop falling for that old trick and watch out for the main attack from the south, since the wildlings have already crossed the wall.
Jon learns that Bran is dead. Except he can't be, because Jon saw Bran's wolf. Then he dreams about Ygritte, and in his dream worries about fathering a bastard, which probably means Ygritte is pregnant. Oh the drama!