Maybe this has been commented on before, but I came across a strange little bug. I was playing an assassin and at the end of the Dark Brotherhood quests when I went to Applewatch to meet with Lucian, I reverse pick-pocketed a hood onto the traitor. I enchanted the hood with a drain health spell, so when we went to the Night Mother shrine the traitor appeared with the hood on. Now this killed him during the Night Mother's dialogue, so when it came time for him to start killing us, the game just stopped. Luckily I was able to reload to a time just before I entered Applewatch & just played it through normally. I was slightly amused..