THE STAFF AT SEATTLE GRACE DISCOVER THAT DOCTORS -- AS IN DR. CRISTINA YANG AND DR. ELLIS GREY -- CAN BE THE MOST CHALLENGING PATIENTS, ON ABC'S "GREY'S ANATOMY"

"Deny, Deny, Deny" - As Cristina tries to recover, she proves to be a very difficult patient, and a visit from her mother doesn't improve her demeanor any. And Meredith's mother, Dr. Ellis Grey, has the hospital staff running in circles. Jeremiah, a cystic fibrosis patient, could benefit from Dr. Addison Shepherd's medical knowledge, but her involvement in his surgery could delay her highly anticipated departure from Seattle Grace Hospital, leaving Meredith and Derek's relationship hanging in the balance, on "Grey's Anatomy," SUNDAY, OCTOBER 16 (10:01-11:00 p.m., ET) on the ABC Television Network.

"Grey's Anatomy" stars Ellen Pompeo as Meredith Grey, Patrick Dempsey as Derek Shepherd, Sandra Oh as Cristina Yang, Isaiah Washington as Preston Burke, Katherine Heigl as Isobel "Izzie" Stevens, Justin Chambers as Alex Karev, T.R. Knight as George O'Malley, Chandra Wilson as Miranda Bailey and James Pickens, Jr. as Richard Webber.

Guest starring are Kate Walsh as Addison, Kate Burton as Ellis Grey, Don McManus as Samuel Linden, Lee Garlington as Farah Linden, Tsai Chin as Helen, Thomas Ian Nicholas as Jeremiah Tate, Katherine LaNasa as Kalpana Vera and Steven W. Bailey as Joe.

"Deny, Deny, Deny" was written by Zoanne Clack and was directed by Wendy Stanzler.

"Grey's Anatomy" is broadcast in 720 Progressive (720P), ABC's selected HDTV format, with 5.1-channel surround sound and Spanish subtitles via secondary closed captioning.

This program carries a TV-14 parental guideline.