Once Upon a Time Season 2 heads into the home stretch with Season 2, Episode 20: "The Evil Queen" (April 28). As the title suggests, this week is all about Regina (Lana Parrilla). But what can we expect from Mayor Mills and her Evil Queen flashbacks? We've gathered the juiciest spoilers about the episode here. 

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Regina's plan. According to the official synopsis of the episode, "With the aid of Hook, Regina attempts to put a plan in motion that will help transport herself and Henry back to Fairytale Land. But her plan revolves around a fail-safe that was planted within the curse, which if triggered could wipe Storybrooke off the map — and kill all of its inhabitants." As we see in this sneak peek, Henry is understandably upset by this plan. Too bad Regina has no problem wiping his memory.

Emma's suspicions. Meanwhile, "Emma’s suspicions about Tamara grow," because she catches Neal's fiancee with a very suspicious list. Stick with your gut on this one, Emma!

Dark Flashback. In the flashback we see Regina get her Evil Queen on, trying to turn people against Snow White and asking "Rumplestiltskin to transform her into an unrecognizable peasant in order to kill an unsuspecting Snow White, with the twisted aim of earning the love and respect of her subjects."

Are you excited for this episode? Sound off in the comments below!

Read more OUAT spoilers here.

Catch the episode on Sunday, April 28 at 8 p.m. ET/PT on ABC.

Rebecca Martin is an editor at Wetpaint Entertainment. Follow her on Twitter @BeccaDMartin.