Owen faces a medical diagnosis that challenges more than he imagined. Meanwhile, Koracick begins to go stir crazy; and Maggie gets a not-so-subtle glimpse into Winston's background.
Starts: Ellen Pompeo, Chandra Wilson, James Pickens Jr., Kevin McKidd, Jesse Williams, Caterina Scorsone, Camilla Luddington, Kelly McCreary, Giacomo Gianniotti