David Giuntoli, Grimm

Adalind has struck again!

On Friday's Grimm (9/8c, NBC), the Hexenbiest (Claire Coffee) has been enlisted by Captain Renard (Sasha Roiz) to cast a spell on Hank (Russell Hornsby), but somehow poor Sergeant Wu (Reggie Lee) gets entangled in her plan... with disastrous results!

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Fortunately, Rosalee (guest star Bree Turner), the sister of a murdered spice shop owner, is on hand to offer her expertise. Check out this exclusive first look at Wu's dilemma:

We'd be screaming too, if we had such a gross and likely painful skin condition! Let's hope Nick (David Giuntoli) and his gang can save the day again.

Grimm, which NBC renewed for a second season this month, returns Friday with all-new episodes through May 19. The fantasy crime procedural airs on Fridays at 9/8c.