THE RENOWNED DR. HARPER AVERY PAYS A VISIT TO SEATTLE GRACE-MERCY WEST HOSPITAL AS A PATIENT, AND EVERYONE IS ON EDGE, ON ABC'S GREY'S ANATOMY"

"Perfect Little Accident" � When famous surgeon Dr. Harper Avery is rushed to Seattle Grace-Mercy West, the staff is surprised to discover that one of their own is related to this legend, and his unorthodox request for his surgery causes tensions t between Derek and Richard. Meanwhile Callie and Arizona try to help Teddy and Sloan move on from their pasts and find greener pastures, on "Grey's Anatomy," THURSDAY, MARCH 4 (9:00-10:01 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, Katherine Heigl as Isobel "Izzie" Stevens, Justin Chambers as Alex Karev, Chandra Wilson as Miranda Bailey, James Pickens, Jr. as Richard Webber, Sara Ramirez as Callie Torres, Eric Dane as Mark Sloan, Chyler Leigh as Lexie Grey, Kevin McKidd as Owen Hunt and Jessica Capshaw as Arizona Robbins.

Guest cast TBA.

"Perfect Little Accident" was written by Peter Nowalk and directed by Bill D'Elia.

"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. A TV parental guideline will be assigned closer to airdate.

For more information on "Grey's Anatomy," visit ABC.com.