Juliette's transformation issue is still a big thing as episode 19 of "Grimm" season 4 titled "Iron Hans" reveals that the veterinarian-turned-Hexenbiest will make a "surprising" new ally. There's quite a pretty strong conjecture on who that individual would be. 

Ever since Juliette has turned into this rampaging witch-like creature, her humanity has slowly escaped from her system. She has grown angry and vindictive, and the rage just goes straight to Adalind and her pregnancy. 

However, it looks like it will be a complete turnaround for the two. The synopsis for the episode reveals that Juliette may find an ally deep within the woman the love of her life slept with. 

It has not been revealed how exactly Adalind will be of service to Juliette, but Nick feels like her only hope can only be attained through Adalind's help. This hope may come with a hefty price however, a price as hefty as Nick and Juliette's relationship. 

"Happiness doesn't make good [on] TV," David Giuntoli, who plays Nick, told Zap2it, foreseeing what could be the end of the road for him and Juliette. "[But] I don't know to what extent the writers are going to tear us apart this time. It could be permanent." 

Needless to say, Nick's detective duties will also come into play. The new episode will lead the detective and his partner Hank from a homicide to an age-old Wesen rite of passage. 

Captain Renard, on the other hand, continues to hold on to the light as she remains dead set against the darkness that is building inside of her. It remains to be seen whether her resistance will drive away the dark or breed it all the more. Either way, it will be exciting to see what happens.

"Grimm" season 4 episode 19 "Iron Hans" will air on April 24.