A gunman opens fire at a local college, sending mass casualties to the hospital; Arizona's return is not warmly received.
Elenco:
Ellen Pompeo
,
James Pickens Jr.
,
Chandra Wilson
,
Justin Chambers
,
Kevin McKidd
,
Jesse Williams
,
Patrick Dempsey
,
Sara Ramirez
,
Sandra Oh
,
Jessica Capshaw
,
Sarah Drew
,
Camilla Luddington
,
Caterina Scorsone
,
Giacomo Gianniotti
,
Kelly McCreary
,
Katherine Heigl
,
Chyler Leigh
,
Eric Dane
,
Kim Raver
,
T.R. Knight
,
Jerrika Hinton
,
Jason George
,
Isaiah Washington
,
Kate Walsh
,
Martin Henderson
,
Brooke Smith
,
Jake Borelli
,
Greg Germann
,
Chris Carmack
,
Tessa Ferrer
,
Gaius Charles
,
Anthony Hill
,
Richard Flood
.