IN PHOTO: Bitsie Tulloch is Juliette in "Grimm"
IN PHOTO: Bitsie Tulloch's Juliette in "Grimm" Season 4 is scared of hurting Nick. The series returns Mar. 20. IN PHOTO: Bitsie Tulloch arrives for the film premiere of "Parkland" at the 38th Toronto International Film Festival in Toronto, September 6, 2013. REUTERS/Fred Thornhill

“Grimm” Season 4 returns with a new episode this Friday (3/20/15 air date) on NBC. A promo clip for 4x14 shows Juliette leaves Nick as they deal with the side effect of countering Adalind’s potion.

Juliette (Bitsie Tulloch) leaves Nick (David Giuntoli) and goes to (spoiler alert) Captain Renard’s (Sasha Roiz) place, saying she needs a place to stay. This development in a “Grimm” Season 4 promo video tells some fans Juliette and the captain are becoming closer as allies – for now.

“Grimm” Season 4 is changing the fantasy series in many levels. Renard is the first to learn about Juliette’s new Hexenbiest situation, and now he’s providing shelter for the woman he once kissed to defy death.

Meanwhile, both Nick and Adalind (Claire Coffee) will separately seek out the expertise of Henrietta, who earlier told Juliette her powerful Hexenbiest state is now permanent. The same “Grimm” Season 4 promo video shows Adalind asking Renard to be on the same side with her.

As for the “Grimm” Season 4 story of the week, 4x14 features a gruesome Wesen ritual for good luck. Monroe (Silar Weir Mitchell) and Rosalee (Bree Turner) will help Nick and Hank (Russell Hornsby) by going undercover. The newlyweds have yet to find out that Juliette is now a Hexenbiest.

Both Monroe and Rosalee took part in creating the anti-Adalind potion that brought back Nick’s Grimm powers. They are expected to have some opinion when Juliette leaves Nick in this week’s new episode.

Bitsie Tulloch has spoken about the changes in her character in “Grimm” Season 4. One of the things Bitsie pointed out is the power that the new Juliette possesses. In the same 4x14 promo video, it appears Juliette is taunting Nick to go after her fellow Wesens.

It remains to be seen how Sgt Wu (Reggie Lee) will react to Juliette’s transformation in “Grimm” Season 4. Wu has just learned about the Wesens, and he is becoming a more active participant in recent stories.

Viktor (guest star Alexis Denisof) returns in this week’s new episode. He and the royals are going after Kelly Burkhardt (Mary Elizabeth Mastrantonio), who has yet to re-appear in “Grimm” Season 4.

“Grimm” Season 4 airs Fridays on NBC. The show went on hiatus for over a month. The next episode, titled, “Double Date,” airs Mar. 27.

Let us know your thoughts on “Grimm” Season 4. For questions/comments regarding the article, you may email the writer at a.paredes@ibtimes.com.au. Disclaimer: Any opinion expressed in this review belongs solely to the writer, and its publication does not signify an endorsement by IBT Media.