LOST Alum Rebecca Mader Joins ABC's ONCE UPON A TIME as New Villain

LOST's Rebecca Mader is heading to Storybrooke.

According to E! Online, Mader has booked a major role on ABC's hit fantasty series ONCE UPON A TIME, taking on a secret, though "iconic fairytale villain" role. Her first appearance will come in the midseason finale on Dec. 15, and she'll stick around throughout the rest of the season.

Master storytellers Edward Kitsis and Adam Horowitz ("Lost," "Tron: Legacy") invite everyone to join Emma Swan, Snow White, Prince Charming, Rumplestiltskin, Hook and the Evil Queen Regina as they travel through a portal on the Jolly Roger in an effort to reach Neverland and rescue Henry.

Welcome to Storybrooke, Maine, a small town that probably won't show up on your GPS, but it's a magical place to visit. Reality and myth merged after Emma broke Regina's curse, which had deprived the fairytale characters of their memories and trapped them in our modern world. When they finally regained their identities, our heroes were dismayed to discover that they weren't transported back to Fairy Tale Land. To make matters worse, Rumplestiltskin - aka Mr. Gold - decided to escalate his power struggle with Regina by introducing magic into the town. But this is our world, and magic always has a tendency to yield unfathomable consequences.

"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, Michael Raymond-James as Baelfire/Neal Cassidy, Jared S. Gilmore as Henry Mills and Robert Carlyle as Rumplestiltskin/Mr. Gold.

Photo by: REX USA/Rob Latour