Season 8 Episode 13 episode 13

Grey's Anatomy Season 8 Episode 13 "If/Then" Sneak Peek #1

Grey's Anatomy Season 8 Episode 13 "If/Then" Sneak Peek #1

Grey's Anatomy is all new this week with season 8 episode 13 "If/Then" airing on Thursday, February 2. In the sneak peek below, Derek and Addison have an argument.