DEREK AND CALLIE COLLABORATE ON A PROJECT ON ABC'S "GREY'S ANATOMY"

James Remar ("Dexter") Guest Stars

"Map of You" - Derek and Callie work on a brain mapping project, Richard encourages the interns to use his physical condition as a learning tool and after a discussion with Callie, Meredith considers continuing her mother's research. Meanwhile, Shane continues to feel guilty about Heather's death, on "Grey's Anatomy," THURSDAY, OCTOBER 24 (9:00-10:00 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, 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, Camilla Luddington as Jo Wilson, Gaius Charles as Shane Ross, Jerrika Hinton as Stephanie Edwards and Tessa Ferrer as Leah Murphy.

Guest cast TBA.

"Map of You" was written by Bill Harper and directed by David Greenspan.

"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.