'Once Upon a Time' season 6 episode 3 spoilers: Cinderella out for revenge as Regina goes in search of the Evil Queen

Screenshot from "Once Upon a Time" season 6 episode 3 "The Other Shoe" sneak peak YouTube/TelevisionPromos

The upcoming episode of "Once Upon A Time" season 6 revolves around Cinderella (Jessy Schram) and her unfinished story with Prince Thomas (Tim Phillips). Meanwhile, Regina (Lana Parrilla) is trying to capture her alter ego – the Evil Queen – who remains one step ahead of her.

The Futon Critic released the synopsis for "Once Upon a Time" season 6 episode 3 titled, "The Other Shoe."

"When Ashley (Cinderella) searches for her step-family, intent on settling their unfinished business, Emma, Hook, and Henry scramble to help her before it's too late." It appears that Cinderella wants more than just a reunion.

In the episode promo, Cinderella will not be getting her happy ending with Prince Thomas. Taunted by her stepmother, Cinderella is determined to get her revenge with a shotgun. Not believing that Cinderella would be capable of such acts, Emma (Jennifer Morrison) —  along with Hook (Colin O'Donoghue) and Henry (Jared S. Gilmore) —  will try and stop her before anything bad happens.

Another storyline that fans will see in episode 3 is Regina and her mission to find the Evil Queen. In another sneak peak for episode 3, Regina tries to bribe Hyde (Sam Witwer) into giving her information on how to win against the Evil Queen.

But upon entering Hyde's chambers, he is seen eating a better meal courtesy of the Evil Queen. Hyde gives a statement that frustrates Regina:

"It's hard to try and stay one step ahead of yourself, isn't it?"

What information does the Evil Queen have, and how will Regina get to her before she unleashes evil once again in Storybrooke?

According to Yibada, Robinhood (Sean Maguire) is returning to Storybrooke and it is expected that he will help Regina maintain the goodness of her heart and refrain from giving in to her alter ego, the Evil Queen. He was last seen sacrificing himself to save Regina, and Robin died in the process.

However, according to executive producers Adam Horowitz and Edward Kitsis, Robin isn't really back from the dead, which leaves his comeback a mystery.

"Once Upon a Time" season 6 airs on Sundays at 8 p.m. EDT on ABC.

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