"THE HUNT IS ON AS A WESEN RIGHT OF PASSAGE BECOMES DEADLY - Nick and Hank are brought in to investigate a homicide they learn is connected to an age-old Wesen rite of passage. Meanwhile, Juliette makes a surprising new ally. Elsewhere, Captain Renard continues to battle a darkness within, and Nick finds hope for Juliette in the last person he expected - Adalind."
So now Juliette has completely betrayed Nick and is helping the Royals track down his mother to get Adalinds kid back. Meanwhile Nick and the gang are working with Adalind to try and stop Juilettes Wesen side with a spell... or so Adalind claims. I wouldn't trust her, she claims the spell will suppress Juilettes Hexenbiest, but it will probably kill her instead.