ISAAC HAS A SURPRISING PROPOSAL FOR NORA, WHEN ABC'S "BROTHERS & SISTERS" RETURNS, SUNDAY, APRIL 20

"Separation Anxiety" � Kitty and Robert make a life altering decision when the Presidential race takes a dramatic turn. Meanwhile, the Walker siblings are shocked by Nora's reaction to a surprise proposal from Isaac, and Rebecca further investigates the identity of her father, when "Brothers & Sisters" returns to ABC, SUNDAY, APRIL 20 (10:02-11:00 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, 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, Danny Glover as Isaac Marshall, Steven Weber as Graham Finch, Evie Peck as Gail and Bruno Oliver as the lab technician.

"Separation Anxiety" was written by David Marshall Grant and Molly Newman and directed by Gloria Muzio.

"Brothers & Sisters" is 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 of "Brothers & Sisters" will be available on ABC.com the day after airing on the network for users to watch online. Also, check out the new weekly video blog, "Brothers & Sisters: Writers Room" on ABC.com, which will give online viewers an exclusive look inside the series from the show's writers.