"Once" Lets Down Its Hair in "The Tower"

Hairy girl Alexandra Metz stars as Rapunzel

Rumpelstiltskin returns, and Rapunzel shows up as well! "The Tower" premieres on Sunday, March 22, 2014. Alexandra Metz, who was a witch on "The Originals," will guest star as Rapunzel.

Behind the scenes: Rapunzel's Tower under construction

As for the "Rapunzel" angle, executive producer Adam Horowitz said, "We're not doing Tangled; we're doing our spin on the character." Added fellow executive producer Edward Kitsis, "We went a little darker and freakier. A little more horror story in the vein of [the 2004 movie] The Grudge."

Josh Dallas and Alexandra Metz

As for the plot? Rapunzel (Alexandra Metz) will be visited in her tower by Prince Charming (Josh Dallas) as well as a mystery lady. Might it be the Wicked Witch of the West (Rebecca Mader) lurking under that hood? "I can't tell you," says Mader.

I think that's a yes.