Grey’s Anatomy: Season 6 Episode 5: Invasion
Starring: Ellen Pompeo, Sandra Oh, Katherine Heigl, Justin Chambers, T.R. Knight, Chandra Wilson, James Pickens Jr., Isaiah Washington
Length: 60 minutes
On Air Date: 15 Oct 2009
Grey’s Anatomy: S06E05 Description: As Mercy West merges with Seattle Grace, battle lines are drawn between the two hospital’s residents over the patients.