Sneak Peek: Sexy Salem Conjures Up 'Impossible' Romance and 'Primal Feelings'

The latest look at WGN America’s upcoming original series Salem offers up a steamy Romeo & Juliet-esque courtship between Shane West’s war vet John Alden and Janet Montgomery’s spellbinding witch Mary Sibley.

The lovers “are in an impossible place, because Mary’s the villain and John’s the hero,” executive producer Brannon Braga reveals in the following behind-the-scenes featurette.

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And while John’s been away at battle, Mary has embraced her dark side. “She’s really grown to enjoy her power,” shares Montgomery. She has also developed a very unusual (and sensual) relationship with her servant Tituba (played by Revenge‘s Ashley Madekwe).

“Horror, somehow, is sexy. I think when your life is on the line, primal feelings come up,” says Seth Gabel (Fringe), whose aristocrat, anti-witch preacher is very familiar with primal sex.

Salem premieres April 20 at 10/9c.