ER/My Brother's Keeper
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My Brother's Keeper is the sixteenth episode of the fourth season of ER, and the eighty-sixth episode overall.
Guest Stars: Abraham Benrubi (Jerry), Jorja Fox (Dr. Maggie Doyle), Trevor Morgan (Scott Anspaugh), Tricia Cast (Mary Jo Reynolds), Robert Knepper (Keith Reynolds), Erica Gimpel (Adele Newman), Bob Larkin (Junior Neurologist), Kathleen Lloyd (Dr. Mack), Greg Mullavey (Airplane Reject), Eric Saiet (Alex Dibble), Jonathan Scarfe (Chase Carter), Khandi Alexander (Jackie), John Aylward (Dr. Donald Anspaugh), Mariska Hargitay (Cynthia Hooper), Paul McCrane (Dr. Robert Romano), George Plimpton (John Carter, Sr.), Frances Sternhagen (Millicent Carter), Laura Ceron (Chuny), Deezer D. (Malik), Lily Mariye (Lily), Gedde Watanabe (Yosh), Emily Wagner (Pickman), Monte Russell (Zadro), Lynn A. Henderson (Olbes), Brian Lester (Dumar), J.P. Hubbell (Audia), Lisa Dinkins (Dr. Hennessy), Belinda Foster (Melissa), Mary-Kathleen Gordon (Rose Kyle), James Hornbeck (Dr. David Zaccarria), Leslie A. Jones (Oncology Nurse), Mason Lucero (Jason), Devon Michael (Eric), Jeffrey Noah (Adrian Reynolds), Jack Orend (Mr. Kyle), Terrie Snell (Luisa), Brooke Ashley Stephens (Evette Anspaugh), Kenneth Alan Williams (Dr. Gabriel)
Doug treats a little boy who was poisoned by his half-brother and faces issues with his research grant after Weaver points out a problem with his study; Carter's cousin, Chase is brought into the ER after suffering from a heroin overdose, leaving him with serious complications; Corday gets her performance review from Romano; Mark learns that Cynthia has quit her job and moved away.