OWEN AND AMELIA TAKE THEIR RELATIONSHIP TO THE NEXT LEVEL, ON ABC'S 'GREY'S ANATOMY'

"At Last" - Owen and Amelia take their relationship to the next level; Alex gains some clarity on his future with Jo; and Callie and Arizona continue to struggle with the current custody arrangement, on "Grey's Anatomy," THURSDAY, MAY 12 (8:00-9:00 p.m. EDT), on the ABC Television Network.

"Grey's Anatomy" stars Ellen Pompeo as Meredith Grey, 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, Jerrika Hinton as Stephanie Edwards, Kelly McCreary as Maggie Pierce, Jason George as Ben Warren, Martin Henderson as Nathan Riggs and Giacomo Gianniotti as Andrew DeLuca.

Guest starring is Debbie Allen as Catherine Avery, Samantha Sloyan as Penny Blake and Wilmer Valderrama as Kyle Diaz.

"Grey's Anatomy" was created and is executive produced by Shonda Rhimes ("Scandal," "How to Get Away with Murder"). Betsy Beers ("Scandal," "How to Get Away with Murder"), Mark Gordon ("Saving Private Ryan"), Rob Corn ("Chicago Hope"), William Harper, Stacy McKee, Zoanne Clack and Debbie Allen are executive producers. "Grey's Anatomy" is produced by ABC Studios.

"At Last" was written by Stacy McKee and directed by Rob Corn.

"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 at a later date.