After a four-week hiatus, season 4 of "Grimm" is set to continue on March 20 with episode 14 titled "Bad Luck."  Following the events of the previous episode, Nick Burkhardt has to deal with the fact that his lady love, Juliette Silverton, is now a Hexenbiest. 

The preview trailer for the episode indicates that Nick may even have to fight Juliette. There is a scene in the promo where Henrietta (played by guest star Garcelle Beauvais) goes on to advise him that killing her would be the only option. 

David Greenwalt and Jim Kouf, showrunners of the show, have indicated that there might be a chance Juliette may turn into one of the main villains but the duo haven't given an official statement on it.

In a report by Zap2it, Greenwalt stated, "We try not to make things easy." 

Bitsie Tulloch, who plays Juliette, stated, "And the fans are loving her being a Hexenbiest because she gets to have a power now. Before it was that she was sort of adding a lot being a veterinarian and being good at research and stuff, and knowing how to shoot a gun. She's actually a potent force. I think right now she doesn't want it and is really just scared about hurting Nick." 

David Giuntoli, who plays the main hero Nick Burkhardt, stated in the report that the two characters may end up breaking up. This breakup may signal the avalanche of events that will follow, such as the build-up of Juliette turning into the show's villain.

Juliette's not the only one with problems because the promo also shows that Adalind may be pregnant with Nick's offspring. A good portion of season 4 is focused on Adalind searching for her child Diana, and with this new baby on the way, it is only likely that her relationship with Nick and Juliette will only get worse from here on out.