Harington appears as Jon Snow in the first episode of the fourth season of Game of Thrones, Two Swords. James Cosmo plays Jeor Mormont, the Lord Commander of the Night’s Watch. Peter Vaughan plays Maester Aemon, the healer and cleric of Castle Black. Jon is put on trial on his return to the castle. He admits to killing the Night’s Watch ranger leader Qhorin Halfhand, but says this was on Qhorin’s own orders to allow Jon to infiltrate the wildling army. He states that he slept with a wildling woman, risking the death penalty for his admission, but shares information about the strength of King-Beyond-the-Wall Mance Rayder’s wildling forces that he was able to gain through his actions. As Jon leaves his fate to the Night’s Watch leaders, Maester Aemon informs him that he will not be killed this time.