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The Advocate is the seventeenth episode of the ninth season of ER, and the one hundred ninety-seventh episode overall.
Guest Stars: Josh Radnor (Keith Mitchell), Laura Ceron (Chuny), Troy Evans (Frank), Yvette Freeman (Haleh), Monte Russell (Zadro), David Dunard, Marina Malota (Molly), Ely Pouget (Mrs. Banks), Esther Scott, Michael B. Silver (Dr. Myers), Sam Vlahos (Pablo), Mel Winkler, Bruce Weitz (Alderman John Bright), Frances Sternhagen (Millicent Carter), John Aylward (Dr. Donald Anspaugh), Rick Almada (Leprechaun), Perry Anzilotti (Perry), Michelle Bonilla (Harms), Deena Hill (Kristy), Mae Hi (Harriet), Lesley Leason (Valerie), Lucy Rodriguez (Bjerke), Tahmus Rounds (Colby), Olga Vilner (Luda), Emily Wagner (Pickman)
Weaver finds her career at risk when she bends the rules to treat the alderman's romantic partner for syphillis who ends up suffering from an allergic reaction with tragic results; Kovac and Corday treat a rebellious teenage girl who ran away from a boot camp that her mother sent her to; Romano is replaced as the Chief of Staff by Weaver.