Grey's Anatomy Season 6, Episode 23 Sanctuary Drama IMDB 8.2 Country United States Duration 43 min Air Date 2010-05-20 Actors Ellen Pompeo (Meredith Grey) James Pickens Jr. (Richard Webber) Chandra Wilson (Miranda Bailey) Kevin McKidd (Owen Hunt) Camilla Luddington (Jo Wilson) Kim Raver (Teddy Altman) Chris Carmack (Atticus Lincoln) Jake Borelli (Levi Schmitt) Anthony Hill (Winston Ndugu) Caterina Scorsone (Amelia Shepherd) Overview Seattle Grace Hospital is hit with a crisis like no other in its' history.