DEREK TRIES TO CONVINCE RICHARD TO SEEK TREATMENT FOR HIS DRINKING, EARN THE RESPECT OF THE HOSPITAL STAFF AND AVOID A POTENTIAL LAWSUIT, ALL ON HIS FIRST DAY AS INTERIM CHIEF, ON ABC'S "GREY'S ANATOMY"

Guest Starring Kim Raver ("24," "Lipstick Jungle") as Teddy Altman

"State of Love and Trust" - As Derek begins his role as interim chief, he faces a potential lawsuit when Bailey and Meredith's patient awakens from anesthesia mid-surgery. Meanwhile, Teddy refuses to place Cristina on her service, as Arizona tests Alex out in Pediatrics, and Mark refuses to speak to a heartbroken Lexie, on "Grey's Anatomy," THURSDAY, APRIL 22 (10:00-11:00 p.m., ET) on the ABC Television Network. (Rebroadcast: OAD: 2/4/10)

Note: This program was originally scheduled for 9:00 p.m.

"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 starring Kim Raver as Teddy, Mitch Pileggi as Larry Jennings, Robert Baker as Charles, Sarah Drew as April, Jesse Williams as Jackson, Nora Zehetner as Reed, Jason George as Ben, Spencer Garrett as Jim and Chastity Dotson as Leslie.

"State of Love and Trust" was written by Stacy McKee and directed by Jeannot Swarzc.

"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,D,S parental guideline.

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