Owen recruits Dr. Teddy Altman, a former Iraqi veteran, as the new cardiothoracic surgeon. Cristina questions her abilities in the E.R. and relationship with Owen. Izzie returns to Seattle Grace with her high school mentor seeking treatment for his dementia. Richard's responsibilities, post-merger, are taking a toll on him.
Casts:
Chandra Wilson, James Pickens Jr., Kevin McKidd, Caterina Scorsone, Camilla Luddington, Kim Raver, Chris Carmack, Jake Borelli, Anthony Hill, Adelaide Kane, Alexis Floyd, Niko Terho, Midori Francis, Harry Shum Jr.