NBC has released the synopsis for episode #612 of Grimm, which you can check out below. The installment, titled “Zerstorer Shrugged,” is officially described as follows:
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SOMETHING WICKED THIS WAY COMES – JACQUELINE TOBONI, HANNAH R. LOYD AND WIL TRAVAL GUEST STAR – The prophecy that was uncovered comes to pass when a dark force arrives in Portland with its eyes set on Diana (guest star Hannah R. Loyd). In an effort to protect her, Nick (David Giuntoli), along with Capt. Renard (Sasha Roiz) and Adalind (Claire Coffee), returns to the scene of his first investigation as a Grimm. Back at the Spice Shop, Monroe (Silas Weir Mitchell), Eve (Bitsie Tulloch) and Rosalee (Bree Turner) make a discovery that uncovers the origins of the mysterious stick. Meanwhile, Hank (Russell Hornsby) and Wu (Reggie Lee) are called to a crime scene that is connected to the gang’s greatest threat.
Grimm “Zerstorer Shrugged,” airs Friday, March 24, at 8pm on NBC.