MEREDITH VISITS HER AILING FATHER, THATCHER, WHILE AMELIA AND KORACICK PERFORM CATHERINE'S BIG SURGERY ON AN ALL-NEW EPISODE OF ABC'S 'GREY'S ANATOMY,' THURSDAY, JAN. 31

Guest Starring Jeff Perry

"The Winner Takes It All" - Amelia and Koracick tackle a daunting surgery on Catherine while Richard and Jackson hope for the best. Meanwhile, Richard urges Meredith to visit her father, Thatcher (Jeff Perry), before his time is up, on "Grey's Anatomy," THURSDAY, JAN. 31 (8:00-9:01 p.m. EST), on The ABC Television Network, streaming and on demand.

"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, Jesse Williams as Jackson Avery, Caterina Scorsone as Amelia Shepherd, Camilla Luddington as Jo Wilson, Kelly McCreary as Maggie Pierce, Kim Raver as Teddy Altman and Giacomo Gianniotti as Andrew DeLuca.

Guest starring is Jeff Perry as Thatcher Grey, Debbie Allen as Catherine Fox, Greg Germann as Tom Koracick and Sophia Ali as Dahlia Qadri.

"The Winner Takes It All" was written by Elisabeth R. Finch and directed by Allison Liddi-Brown.

"Grey's Anatomy" was created and is executive produced by Shonda Rhimes. Betsy Beers, Mark Gordon ("Saving Private Ryan"), Krista Vernoff ("Shameless"), Debbie Allen, Zoanne Clack, Fred Einesman, Andy Reaser and Meg Marinis are executive producers. "Grey's Anatomy" is produced by ABC Studios.

"Grey's Anatomy" is broadcast in 720 Progressive (720P), ABC's selected HDTV format, with 5.1-channel surround sound. This episode carries a TV-14, DL parental guideline.