GREY’S ANATOMY “Brave New World” (Season 5 Episode 4)

Watch two promos from GREY’S ANATOMY‘s Season5 Episode 4, “Brave New World” airing this Thursday, October 16, at 9pm on ABC.

Read all our Grey’s Anatomy coverage here.

Episode Synopsis: “Brave New World” – Meredith freaks out when Derek discovers her mother’s old diary in the house, Callie frets as she prepares for her first official date with Erica, and Cristina stumbles into a part of the hospital that neither she nor her fellow residents have seen before.

“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, T.R. Knight as George O’Malley, 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 and Brooke Smith as Erica Hahn.

Guest starring Amy Aquino as Marianne, Larry Brandenburg as Arnie, Bre Blair as Lauren, John Sloan as David, Steven W. Bailey as Joe, Kathleen Early as Dr. Daisy Pepman and Max Burkholder as Duncan.

“Brave New World” was written by Debora Cahn and directed by Eric Stoltz.