CAN IT BE THEIR PARENTS' ACTIONS THAT FOREVER ENTWINED EMMA'S AND LILY'S FATES? ON ABC'S "ONCE UPON A TIME"

"Lily" - Emma's potential for darkness is looming over everyone, but when Emma realizes Maleficent's daughter Lily is in fact her closest friend from her foster care days, she resolves to find Lily and reunite her with her mother. Regina joins forces with Emma and together they set out to track down Lily and to warn Robin about Zelena. However, neither of them is prepared for the harsh realities they'll encounter in the outside world. Meanwhile, in Storybrooke, Gold faces a crisis involving Belle. In a foster care flashback, things are looking up for young Emma with her new family until Lily's appearance threatens to destabilize everything, on "Once Upon a Time," SUNDAY, APRIL 26 (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 the Evil Queen/Regina, Josh Dallas as Prince Charming/David Nolan, Emilie de Ravin as Belle, Colin O'Donoghue as Hook, Jared S. Gilmore as Henry, Michael Socha as Will Scarlet and Robert Carlyle as Rumplestiltskin/Mr. Gold.

Guest stars include Rebecca Mader as Zelena, Sean Maguire as Robin Hood, Christie Laing as Maid Marian, Timothy Webber as Apprentice, Abby Ross as Young Emma, Nicole Munoz as Young Lily, Agnes Bruckner as Lily, Patrick Fischler as Isaac, Kristin Bauer as Maleficent, Sidney Shapiro as Max, Parker Magnuson as Zach, Cameron Bancroft as Bill, Kendall Cross as Katie, Phil Granger as Landlord and Zoey Siewert as Brunette Girl.