Hathaway returns to work after her suicide attempt, and gets support from her co-workers and her orthopedic surgeon boyfriend, Dr. John "Tag" Tagliari. A mysterious woman comes to the ER and sings to the doctors and patients while the doctors try to find out who she is. Lewis deals with a heart patient. Benton works with an injured convenience store clerk who insists on defending himself when his store is robbed.
Elenco: Maura Tierney , Parminder Nagra , Scott Grimes , Linda Cardellini , John Stamos , David Lyons , Angela Bassett , Laura Innes , Lily Mariye , Linda Cardellini , Maura Tierney , Mekhi Phifer , Noah Wyle , Parminder Nagra , Scott Grimes , Sherry Stringfield , Yvette Freeman , Eriq La Salle , Kellie Martin , John Stamos , Michael Michele , Erik Palladino , Angela Bassett , David Lyons , Chase Masterson , Swoosie Kurtz , Lisa Vidal , Laura Cerón .