ABC has released a sneak preview of next Thursday's episode of Grey's Anatomy. As we've written about numerous times, it looks like Derek is reaching his breaking point.

Well, below is a scene from "I Will Follow You Into the Dark" in which he decides he's had enough of people dying on his watch and refuses to operate. Chief? Not happy:

[video url="http://www.tvfanatic.com/videos/i-will-follow-you-into-the-dark-sneak-preview/" title="I Will Follow You Into the Dark Sneak Preview"] [/video]

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.