AFTER HOOK SACRIFICES HIMSELF TO SAVE STORYBROOKE, THE HEROES FOLLOW HIM TO THE UNDERWORLD WHERE THEY ENCOUNTER FACES FROM THEIR PAST, ON ABC'S SPECIAL 100th EPISODE OF "ONCE UPON A TIME"

Greg Germann Guest Stars as Hades, Barbara Hershey as Cora, Robbie Kay as Peter Pan, Tony Perez as Valet and Giancarlo Esposito as Sidney Glass/Magic Mirror

"Souls of the Departed" - Emma, Regina, Mary Margaret, David, Robin, Henry and Gold arrive in the Underworld, on a mission to rescue Hook, only to discover that their search will be more difficult than they had anticipated. The inhabitants of the Underworld - all souls with unfinished business and many with quite personal vendettas - hound our heroes at every turn. Meanwhile, in an Enchanted Forest flashback, a familiar face from the Evil Queen's past returns to present Regina with the perfect birthday gift, on the 100th episode of "Once Upon a Time," SUNDAY, MARCH 6 (8:00-9:00 p.m. EST) 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, Emilie de Ravin as Belle, Colin O'Donoghue as Hook, Jared S. Gilmore as Henry Mills, Sean Maguire as Robin Hood, Rebecca Mader as the Wicked Witch/Zelena and Robert Carlyle as Rumplestiltskin/Mr. Gold.

Guest stars include Barbara Hershey as Cora, Giancarlo Esposito as Sidney Glass/Magic Mirror, Robbie Kay as Peter Pan, Emma Caulfield as the Blind Witch, Tony Perez as Valet, Lee Arenberg as Leroy/Grumpy, David-Paul Grove as Doc, Gabe Khouth as Sneezy, Faustino Di Bauda as Sleepy, Michael Coleman as Happy, Mig Macario as Bashful, Jeffrey Kaiser as Dopey, Steven Roberts as Blacktooth, Stefano Giulianetti as Jester, Jesse Blue as Black Knight, Julia Tortolano as Blueberry Pie Gal and Greg Germann as Hades.