SEASON PREMIERE

THE DOCTORS OF GREY SLOAN MEMORIAL HOSPITAL ARE FORCED TO FACE THE CONSEQUENCES OF THEIR ACTIONS, ON ABC'S 'GREY'S ANATOMY'

"Undo" - When one of Grey Sloan's own lands in the hospital, Bailey tries to figure out what happened while the rest of the doctors jump in to help. Meredith juggles huge secrets that affect her relationships with Alex and Maggie. While Richard helps Jo with a big decision, April and Catherine clash over the new baby, on the season thirteen premiere of "Grey's Anatomy," THURSDAY, SEPTEMBER 22 (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, 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.

"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.

"Undo" was written by William Harper and directed by Debbie Allen.

"Grey's Anatomy" is broadcasted in 720 Progressive (720P), ABC's selected HTV format, with 5.1-channel surround sound. This program carries a TV-14, D parental guideline.