“Hat Trick” – While searching for a missing Mary Margaret, Emma is kidnapped by a man whose affinity for hats has him teetering on the edge of madness. Meanwhile, viewers will be transported outside of the fairytale land that was for the first time when the Evil Queen persuades a skillful man of magic to come work for her one last time and travel to Wonderland in order to help steal something from the Queen of Hearts, on “Once Upon a Time,” SUNDAY, MARCH 25 (8:00-9:00 p.m., ET) on the ABC Television Network.
I think it is because of this press release (spoiler) for this episode that I think Regina might be involved somehow. And I guess I also think that Jefferson knows the FTL characters are stuck in SB. I think he knows somehow. Maybe he bumps into Emma and she awakens that awareness in him somehow, and that’s how he knows she has magic.