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Elementary Promo Teases New Moriarty Threat, Season-Ending 'Reckoning'

The close of Elementary Season 4 promises to give Sherlock (played by Jonny Lee Miller) an unsettling blast from his past.

As seen in this first look at a new promo for the season’s final two episodes, airing May 1 and May 8 (following this Sunday’s fresh outing), the threat of more menace at the hand of Jamie Moriarty haunts Sherlock and Joan. Though Natalie Dormer perhaps need not put in an encore to pull that off…?

As previously and exclusively reported by TVLine, Defiance fave Tony Curran is set to debut in this season’s penultimate episode, airing May 1, as an economics professor with more than a passing interest in Sherlock’s greatest nemesis. Could he be the one haunting Holmes?

Press play above and share your latest theory on Moriarty’s “return.”

Want more scoop on Elementary, or for any other show? Email insideline@tvline.com and your question may be answered via Matt’s Inside Line.