'Grimm' Sneak Peek: Last-Witch Effort

Ever since the spell to get Nick’s powers back turned Juliette (Bitsie Tulloch) into a real witch, things have been looking, well, grim on Grimm. The accidental Hexenbiest wants less and less to do with her hero honey, his monster fighting friends, or her humanity, as she is seemingly losing the war with her powerful dark side.

But the gang isn’t ready to give up on Juliette just yet. Even if it means enlisting the help of their enemy, Adalind, as they do in this exclusive clip from Friday’s new episode, “You Don’t Know Jack.”

Related: ‘Grimm’ Postmortem: Bitsie Tulloch Says Don’t Hold Your Breath For a Nick-Juliette Wedding

Adalind (Claire Coffee) and Rosalee (Bree Turner) combine Wesen forces to create a potion with her mom’s voodoo hat that should undo Juliette’s condition. Nick (David Giuntoli) worries his beloved bad girl won’t touch a cure if Adalind was involved, and Monroe sagely points out that she’s likely to be leery of any spell concocted by them, as she puts the blame for the whole evil exchange on all of them. But despite their differences, Adalind is wise enough to know that if it works, Juliette will jump at the chance to return to normal. Which is why she offers herself as a guinea pig. Unfortunately, from the looks of it, the magical elixir won’t go down the hatch quite so easily.

Grimm airs Fridays at 8 p.m. on NBC.