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Responsible Parties is the twenty-first episode of the fifth season of ER, and the one hundred thirteenth episode overall.
Starring: Anthony Edwards (Dr. Mark Greene), Noah Wyle (Dr. John Carter), Julianna Margulies (Nurse Carol Hathaway), Gloria Reuben (Jeanie Boulet) (credit only), Laura Innes (Dr. Kerry Weaver), Alex Kingston (Dr. Elizabeth Corday), Kellie Martin (Dr. Lucy Knight)
Guest Starring: Abraham Benrubi (Jerry Markovic), Ellen Crawford (Lydia Wright), Yvette Freeman (Haleh), Moira Walley (Andrea Brodoff), Cress Williams (Off. Reggie Moore), Vaughn Armstrong (), Stephanie Dunnam (Dr. McLucas), Lucy Lee Flippin (), Maggie Lawson (Shannon Mitchell), Nathan LeGrand (Agent Lance Carmichael), George McDaniel (), Eric Christian Olsen (Travis Mitchell), Marcia Rodd (), John Rosenfeld (Agent Robert Clayton), Jimmie F. Skaggs (Joe Chattarowski), Cec Verrell (), Nathan West (Justin Casey), Linda Burden-Williams (), Jody Wood (), Dan Ziskie ()
Special Guest Stars: Paul McCrane (Dr. Robert Romano)