"Grimm" has had an eventful season four as the story has significantly progressed after coming back from its winter hiatus. What intrigued viewers the most was Juliette's (Bitsie Tulloch) Hexenbiest transformation and her attempts to keep it a secret from Nick (David Giuntoli).

While episode 11 dealt with a haunted house and a murder by an alleged ghost, episode 12 titled "Marechaussee" will deal with a mysterious bounty hunter. The official synopsis of the episode was revealed by CaterMatt. Nick (David Giuntoli) and Hank (Russell Hornsby) investigate a series of murders that lead back to the Wesen Council and a mysterious bounty hunter (guest star Arnold Vosloo). Elsewhere, Juliette's (Bitsie Tulloch) meeting with Henrietta (guest star Garcelle Beauvais) brings about more disturbing news than she was expecting. Meanwhile, Adalind (Claire Coffee) and Viktor (guest start Alexis Denisof) make their way back to Portland.

Adalind and Victor should be grateful that they had a break from Portland, because the town is about to get dangerous with mysterious supernatural forces lurking in the midst. Nick angers the Wesen Council when he goes after their bounty hunter. Will he be the council's next target? It seems likely.

TVLine reports that Nico Evers-Swindell, who previously played the role of Prince William in 2014's "William & Kate" TV movie, will also star in at least two upcoming episodes. He will play the role of Prince Kenneth who is ruthless, commanding and handsome. What will Kenneth do? He is given orders by the king to retrieve Adalind's daughter in Portland, which could only spell trouble for Victor.

But, what fans are most eager to know is, if Juliette's secret of being a Hexenbiest will alter her marriage's domestic bliss? Can her big secret destroy their marriage and how long will it be before Nick learns the truth?

"Grimm" season four episode 12 airs on Feb. 6, 2015 at 8 p.m. central time on NBC.