SEASON FINALE

THE WALKER FAMILY LEARN THAT THEY MAY NEVER SEE TOMMY AGAIN, ON THE SEASON FINALE OF ABC'S "BROTHERS & SISTERS"

"Mexico" � When the Walker family reaches out to Tommy, they're devastated to find that he may be unwilling to accept their help. Meanwhile, Robert and Kitty reach a crossroads in their marriage that they may not be able to successfully navigate; Justin makes plans for the future, with or without Rebecca; and Saul makes a shocking admission about Ryan Lafferty's mother, on the season finale of "Brothers & Sisters," SUNDAY, MAY 10 (10:01-11:00 p.m., ET) on the ABC Television Network.

"Brothers & Sisters" stars Dave Annable as Justin Walker, Maxwell Perry Cotton as Cooper Whedon, Kerris Lilla Dorsey as Paige, Sally Field as Nora Holden, Calista Flockhart as Kitty Walker, Balthazar Getty as Thomas Walker, Rachel Griffiths as Sarah Whedon, Luke Macfarlane as Scotty Wandell, Rob Lowe as Senator Robert McCallister, Sarah Jane Morris as Julia Walker, Matthew Rhys as Kevin Walker, Ron Rifkin as Saul Holden, Emily VanCamp as Rebecca Harper and Patricia Wettig as Holly Harper.

Guest starring are Ken Olin as David Caplan, Luke Grimes as Ryan Lafferty, Mario Quinonez Jr. as Eduardo, Randee Heller as Karin, Brian Lloyd as Sven, Tom Lommel as Karl, Frank Gallegos as Pablo, Chaim Jeraffi as the retreat doctor and Martin Morales as the bartender.

"Mexico" was written by Alison Schapker and Monica Owusu-Breen and directed by Ken Olin.

The series broadcast in 720 Progressive (720P), ABC's selected HDTV format, with 5.1-channel surround sound and Spanish subtitles via secondary closed captioning. A TV parental guideline will be posted closer to airdate.

This episode will be available on ABC.com the day after airing on the network for users to watch online.