PREVIEW: ONCE UPON A TIME, DESPERATE HOUSEWIVES & GCB on ABC

ABC's regular Sunday night lineup is back on Sunday, April 29.  Find out what happens below:

8:00 p.m.-9:00 p.m. ONCE UPON A TIME
"The Stranger" - August promises to enlighten Emma and take her on a journey that will show her how she can beat Regina, and possibly take custody of Henry; and with Mary Margaret returning to work, Regina puts a plan in motion to seduce David. Meanwhile, in the fairytale land that was, with the Evil Queen's curse about to strike, Geppetto agrees to a plan that will save Snow White and Prince Charming's daughter, but with a proviso that could also save his own son.

9:00 p.m.-10:01 p.m. DESPERATE HOUSEWIVES
"Lost My Power" - With Mike gone, Susan attempts to build a car for MJ's father-and-son school soapbox derby; Bree's attorney, Trip (Scott Bakula), learns of her previous drunken sexual spree and needs her to come clean about it in order to help strengthen her case; Lynette tries to cause some negative friction between Tom and his girlfriend, Jane, by flirting with his boss and getting him to pile more work on her estranged husband; Gaby is furious with Carlos when he tries to poach one of her rich, personal shopper clients (Doris Roberts) and talk her into helping with his newly formed charity organization; and Renee discovers that Ben is keeping a secret from her about his involvement with Bree -- and the body found at his work site.

10:01 p.m.-11:00 p.m. GCB
"Adam & Eve's Rib" - When Amanda tries to put together an all female barbeque team to prove a point to her daughter, she recruits the helps of the GCBs for the cook-off of the year. Meanwhile Heather meets an attractive butcher (Kevin Alejandro), Cricket purchases stud services from businessman Mason Massey (Grant Bowler), Carlene becomes frustrated with Ripp, and Sharon tries to help Zack with his dealership problems.

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