Preview Clip of Grey's Anatomy Season 9, Episode 9: Derek's Sister Takes a Stand (VIDEO) Tweet December 10, 2012 at 10:35AM EST by Rebecca Martin Related: Grey's Anatomy, Sneak Peeks , Derek Shepherd , Meredith Grey , Season 9 , Season 9 Episode 9 Credit: ABC © 2012 Disney ABC Television Group via YouTube Air date: December 13, 2012. On Grey's Anatomy Season 9, Episode 8: “Love Turns You Upside Down” we met yet another one of Derek's (Patrick Dempsey) sisters, Liz (Never Campbell). Now, in a new sneak peek of Season 9, Episode 9: “Run, Baby, Run” we get a better sense of what she's like.
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