REGINA ATTEMPTS TO TRANSPORT HERSELF AND HENRY BACK TO FAIRYTALE LAND -- WHICH INCLUDES A FAIL-SAFE THAT COULD WIPE STORYBROOKE AND ITS INHABITANTS OFF THE FACE OF THE EARTH -- AND EMMA'S SUSPICIONS ABOUT TAMARA GROW, ON ABC'S "ONCE UPON A TIME"

"The Evil Queen" - With the aid of Hook, Regina attempts to put a plan in motion that will help transport herself and Henry back to Fairytale land. But her plan revolves around a fail-safe that was planted within the curse, which if triggered could wipe Storybrooke off the map - and kill all of its inhabitants; and Emma's suspicions about Tamara grow. Meanwhile, in the fairytale land that was, the Evil Queen asks Rumplestiltskin to transform her into an unrecognizable peasant in order to kill an unsuspecting Snow White, with the twisted aim of earning the love and respect of her subjects, on "Once Upon a Time," SUNDAY, APRIL 28 (8:00-9:00 p.m., ET) on the ABC Television Network.

"Once Upon a Time" stars Ginnifer Goodwin as Snow White/Mary Margaret, Jennifer Morrison as Emma Swan, Lana Parrilla as Evil Queen/Regina, Josh Dallas as Prince Charming/David, Emilie de Ravin as Belle, Colin O'Donoghue as Hook, Jared S. Gilmore as Henry Mills, Meghan Ory as Red Riding Hood/Ruby, and Robert Carlyle as Rumplestiltskin/Mr. Gold.

Guest starring are Lee Arenberg as Leroy/Grumpy, Michael Raymond-James as Neal Cassidy, Ethan Embry as Greg Mendell, Sonequa Martin-Green as Tamara, Aleks Paunovic as Berkley, Michael Teigen as Rivers, Hrothgar Mathews as carny, Max Montesi as peasant boy, Bri Neal as peasant girl, William Phillips as peasant man, Jennifer J. Angeli as weaver and Harold Davies as fisherman.

"The Evil Queen" was written by Christine Boylan & Jane Espenson and directed by Gwyneth Horder-Payton.

"Once Upon a Time" is broadcast in 720 Progressive (720P), ABC's selected HDTV format with a 5.1 channel surround sound.This program carries a TV-PG,V parental guideline.

For more information on "Once Upon a Time," visit ABC.com/Once