Sam is the first person to notice something strange about the corpse of rangers Othor and Jafer Flowers (who are actually wights sent to assassinate Lord Commander Jeor Mormont). When Jon tries to abandon the Night's Watch to join Robb Stark's army and avenge the death of his father Eddard Stark, Sam alerts their fellow recruits, who catch up to Jon and convince him to not break his vows to the Night's Watch.