MEREDITH DIVES INTO ELLIS' PAST ON ABC'S "GREY'S ANATOMY"

Guest Starring Kate Burton ("Scandal"), Sally Pressman ("Army Wives"), and Kelly McCreary ("Dr. Emily Owens, MD")

"Only Mama Knows" - Secrets from Ellis Grey's past come to light when Meredith watches old videos and reads through her mother's journals. Meanwhile, Maggie rocks the hospital with an unexpected announcement; Alex gets new responsibilities and Callie focuses her attention on the Veterans' project on "Grey's Anatomy," THURSDAY, OCTOBER 16 (8:00-9:00 p.m., ET) on the ABC Television Network.

"Grey's Anatomy" stars Ellen Pompeo as Meredith Grey, Patrick Dempsey as Derek Shepherd, Justin Chambers as Alex Karev, Chandra Wilson as Miranda Bailey, James Pickens, Jr. as Richard Webber, Sara Ramirez as Callie Torres, Kevin McKidd as Owen Hunt, Jessica Capshaw as Arizona Robbins, Jesse Williams as Jackson Avery, Sarah Drew as April Kepner, Caterina Scorsone as Amelia Shepherd, Camilla Luddington as Jo Wilson, and Jerrika Hinton as Stephanie Edwards.

Guest cast TBA.

"Only Mama Knows" was written by Mark Driscoll and directed by Nicole Rubio.

"Grey's Anatomy" is broadcasted in 720 Progressive (720P), ABC's selected HTV format, with 5.1-channel surround sound. A TV parental guideline will be assigned closer to airdate.

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