As the result of a school shooting, Kovac and Benton care for the gunman and his victims. Abby discovers that Carter has been illegally injecting pain relievers. Greene and Weaver confront Carter about his problem, and Weaver orders him to enter a drug rehabilitation center or leave the hospital permanently.
Quest roles:
Maura Tierney(Abby Lockhart), Ming-Na Wen(Jing-Mei Chen), Lily Mariye(Lily Jarvik), Troy Evans(Frank Martin), Conni Marie Brazelton(Connie Oligario), Yvette Freeman(Haleh Adams), Ellen Crawford(Lydia Wright), Deezer D(Nurse Malik McGrath), Emily Wagner(Doris Pickman), Dinah Lenney(Nurse Shirley), Montae Russell(Dwight Zadro), Amy Aquino(Dr. Janet Coburn), John Aylward(Donald Anspaugh), Laura Ceron(Nurse Chuny Marquez), John Doman(Dr. Carl Deraad), Gedde Watanabe(Yosh Takata), Kristin Minter(Randi Fronczak), Michelle Bonilla(Christine Harms), Meg Thalken(Chopper EMT Dee McManus), Eric Payne(Off. Billy Wilder), Stewart Finlay-McLennan(Mr. Tanner), Alvin Alvarez(Daniel), Randolph Mantooth, RonReaco Lee, Kyle Sullivan(Nicholas Rosato), Paul O'Brien(Kicking Patient), Emily Bergl(Gloria Milton), Don Took(Vinnie Rosato), Mary Heiss(Nurse Mary), Mario Soto(SWAT), Michael Johnson(Gunman)