STAGE TUBE: Sneak Peek - 'Moment of Truth' on This Week's GREY'S ANATOMY

On Thursday night's episode of the ABC medical drama GREY'S ANATOMY entitled "Moment of Truth", after eight years of practice, the residents head to San Francisco for their oral boards; sparks fly between Catherine and Richard when they bump into each other at the hotel; Bailey intervenes after Owen and Teddy get into a heated argument about their young car crash patient; and Mark tries to recruit Lexie for one of his cases. Meanwhile, Alex feels guilty for being away from the hospital when Tommy's health begins to fail. Debbie Allen ("Fame") guest stars as Catherine Avery. The episode airs Thursday, April 26 (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, 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, Jessica Capshaw as Arizona Robbins, Kim Raver as Teddy Altman, Jesse Williams as Jackson Avery and Sarah Drew as April Kepner.

"Moment of Truth" was written by Zakiyyah Alexander and directed by Chandra Wilson.

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

Get a sneak peek at the upcoming episode below!