News of the incoming mass causalities after a gunman opens fire at a local college hits the staff hard when they must spring into action, even while their own wounds are still fresh; and Arizona does not receive a warm welcome home at the hospital.

Starring:

Ellen Pompeo, Chandra Wilson, James Pickens, Jr., Justin Chambers, Sara Ramirez, Patrick Dempsey, Kevin McKidd, Sandra Oh, Jessica Capshaw, Jesse Williams, Sarah Drew, Eric Dane, Camilla Luddington, Katherine Heigl, Chyler Leigh, Jerrika Hinton, T.R. Knight, Jason George, Caterina Scorsone, Kelly McCreary, Isaiah Washington, Kim Raver, Kate Walsh, Giacomo Gianniotti, Martin Henderson, Gaius Charles, Tessa Ferrer, Brooke Smith, Jake Borelli, Greg Germann, Chris Carmack, Richard Flood, Anthony Hill

Genre:

Drama, Romance, Medical