'The Walking Dead' star Melissa McBride just could not hold back her tears at New York Comic Con after watching a retrospective of her long history with Norman Reedus, beginning with the flagship show through their work on 'The Walking Dead: Daryl Dixon,' which concludes with its fourth and final season early next year. #NYCC #TheWalkingDead #WalkingDead #TWD #DarylDixon