The Evil Queen will continue to unleash her vile powers in the eighth episode of "Once Upon a Time" season 6.

In the previous episode, Regina's (Lana Parilla) evil nemesis managed to split up Snow White (Ginnifer Goodwin) and Prince Charming (Josh Dallas) by putting them in under a curse that makes the other one fall asleep whenever the other is awake.

Based on the teaser for the upcoming episode, titled "I'll Be Your Mirror," Snow's anger over the Evil Queen's actions will be very apparent as she watches over her sleeping husband.

But the Evil Queen's plans are not yet over. The trailer teased that the biggest villain in Storybrooke will be using mirrors to monitor all the actions of the heroes. She will also use it to trap Regina and Snow's daughter, Emma Swan (Jennifer Morrison), to get inside her dark universe.

The trailer showed that Regina and Emma are trying to come up with a plan to end the Evil Queen's existence ultimately. Their plan includes trapping the villain on the mirror. But it appears like the Evil Queen already have the same thing in mind, and she will act on it first before the Storybrooke heroes get the chance to work on their plan.

Aside from trapping them behind the mirror, the Evil Queen also set up a huge surprise for Regina and Emma. Could they survive the attacks of the monster lurking behind the mirror and return to Storybrooke to defeat the Evil Queen once and for all?

Cartermatt revealed the synopsis for the upcoming episode of "Once Upon a Time" season 6. It reads: "Emma and Regina formulate a plan to trap the Evil Queen in a prison of their own making, while Snow and David adjust to life without each other. As Henry nervously prepares to take Violet to the school dance, the Evil Queen impersonates Regina to give him some advice that could lead him down a dark path. Meanwhile, Zelena agrees to help Belle, and together they enlist Aladdin to steal a magical object from Mr. Gold that could protect Belle and her unborn child from him forever."

ABC will air the upcoming episode on Sunday, Nov. 13.