Once Upon a Time season 4, episode 7, “The Snow Queen,” airs tonight on ABC. Watch Emma capture the Snow Queen in our preview!

Tonight’s episode pits Emma against the town when she loses control of her powers. But in the preview from Once Upon a Time season 4, episode 7, Emma appears to have the upper hand when Ingrid takes the mirror to the clock tower!

Previously on ‘Once Upon a Time’

Last week’s episode dealt with the fall out of Emma trying to find her connection to the newly identified Ingrid. The prophecy, translated at the close of the episode, revealed that Emma is the perfect fit for Ingrid to build the family that she lost many years ago. Meanwhile, Belle revealed that she knew Anna in Arendelle and feels fully responsible for her disappearance.

Related: Once Upon a Time season 4, episode 7 stills: Cinderella and Aurora return

This week on ‘Once Upon a Time’

Synopsis: “Emma captures the Snow Queen and interrogates her at the sheriff’s station. But the Snow Queen uses her prior knowledge of Emma to try to persuade her into thinking that they are more alike than she could possibly imagine. Regina and Robin Hood’s relationship grows increasingly complex as they struggle to find a way to save his dying wife, Emma begins to see what she missed out on by not growing up and being a family with Snow and Charming when she sees how involved Mary Margaret is in baby Neal’s life, and Henry begins his after school job in Gold’s shop while trying to help Regina find a clue to the identity of the author of the storybook.”

This week’s flashback should connect the missing pieces of the Snow Queen! Take a trip back to Arendelle to find out how she discovered her powers and witness how she ties into the Frozen family tree.

Watch Once Upon a Time season 4, episode 7, “The Snow Queen,” tonight at 8:00 p.m. ET on ABC.