On the next episode of Once Upon a Time, Zelena, a.k.a. The Wicked Witch (Rebecca Mader) might be poisoning one of the main characters.

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In episode 14, titled The Tower, Zelena is able to manipulate Snow White (Ginnifer Goodwin) and Charming (Josh Dallas) into letting her into their home, according to a new report by TV Guide. Zelena convinces them that she will help with their impending pregnancy, though she may have something more sinister up her sleeve.

The report features a sneak peek clip of a scene from the episode, with Snow totally on board with her new friendship while Charming remains skeptical. Zelena proceeds to make them all a cup of tea, but she secretly puts an unidentified powder into Charming's cup, suggesting that she may be trying to poison him.

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In similar Snow-Charming pregnancy news, Goodwin spoke with TVLine recently about an intriguing new theory that may or may not come to pass. There is an interesting theory buzzing around that Snow and Charming's new baby could be a representation of "Dorothy," the iconic character from the Oz stories.

Goodwin told TVLine that she had discussed the possibility that the baby could be Dorothy with Dallas, though they are leaning towards the idea of Emma (Jennifer Morrison) being a version of Dorothy.

The TVLine report also notes that, through episode 18, there has been no indication of how Dorothy could be represented in Once Upon a Time. 

Once Upon a Time season 3 airs Sundays at 8 p.m. on ABC.

Watch the sneak peek of the next episode of Once Upon a Time here:

Tags: Once Upon A Time television ABC