Heart of Gold

"Heart of Gold" is the seventeenth episode of Season Four of ABC's Once Upon a Time. It was written by Tze Chun & Scott Nimerfro, and directed by Billy Gierhart. It will be the eighty-third episode of the series overall, and will premiere on April 12, 2015.

Synopsis
Emma is still reeling after learning the truth of her parents' history with Maleficent, but she must focus on finding the Author, who is running loose in Storybrooke, before Gold does. When Gold's quest for his happy ending grows more urgent, he blackmails Regina into helping him. In a Fairy Tale Land flashback, Robin Hood learns what it means to be an honorable thief when he accepts a proposition by Rumplestiltskin to travel to Oz to steal a valuable magic elixir from the Wicked Witch.

Starring

 * Ginnifer Goodwin as Snow White/Mary Margaret Blanchard
 * Jennifer Morrison as Emma Swan
 * Lana Parrilla as Evil Queen/Regina Mills
 * Josh Dallas as Prince Charming/David Nolan
 * Emilie de Ravin as Belle/Belle French
 * Colin O'Donoghue as Hook
 * Jared S. Gilmore as Henry Mills
 * Michael Socha as Knave of Hearts/Will Scarlet
 * Robert Carlyle as Rumplestiltskin/Mr. Gold

Guest Starring

 * Rebecca Mader as Wicked Witch of the West/Zelena
 * Sean Maguire as Robin Hood/Robin Hood
 * Wil Traval as Sheriff of Nottingham/Keith
 * Raphael Alejandro as Roland/Roland
 * Christie Laing as Marian
 * Jason Burkart as Little John/Little John
 * Patrick Fischler as The Author
 * Jennifer Cheon as Nurse
 * Paul Kloegman as Carriage Driver
 * Tristan Shire as Oz Guard

Production Notes

 * During a concept meeting, the production team was described as "aflutter" because of something "outrageous" in the script.