"Grimm" Season 4, Episode 7, titled "The Grimm Who Stole Christmas," airs Dec. 5 on NBC. Things are back to normal for Nick Burkhardt (David Giuntoli), while viewers learn more about Theresa Rubel aka Trubel (Jacqueline Toboni).

Spoiler alert: This update contains Grimm Season 4 spoilers. Read at your own risk.

In Grimm Season 4, Episode 6, Nick and Juliette are finally able to reverse the spell cast by Adalind (Claire Coffee). Monroe, Rosalee, and Captain Renard's mother have worked together to get the right potion done. By the end of the episode, Nick's Grimm powers are back.

Nick and Trubel share a meaningful hug in Grimm 4x6, during which Trubel chokes up. She appears to be overwhelmed by the challenges of being a Grimm, and now she does not have to fight the Wesens alone.

"A bizarre string of home invasions lead to an even stranger Wesen phenomena; Monroe (Silas Weir Mitchell) plans a special Christmas surprise for Rosalee (Bree Turner); and Trubel comes to a life-changing realization that impacts everyone," reads the episode synopsis of Grimm Season 4, Episode 7 on TV.com.

Monroe and Rosalee have yet to take some time out for their honeymoon at this point. They have been busy dealing with the "un-grimming" of Nick and the looming threats brought about by their inter-Wesen marriage. The latter convinces Juliette (Grimm Season 4, Episode 5) that Nick should be a Grimm again.

Meanwhile, the show's avid viewers are anticipating a face-off between Captain Renard's Hexenbiest mother Elizabeth (Louise Lombard) and Nick's mother Kelly (Mary Elizabeth Mastrantonio). The former wants to get her grandchild, while the latter has not resurfaced since the Grimm Season 3 finale.

Captain Renard (Sasha Roiz) has been tasked by his mother to be ready in case Kelly makes contact to Nick. He agrees to the plan. Captain Renard has also confirmed that Trubel is a Grimm. He tells Nick and Griffin (Russell Hornsby) to do something about Sgt. Wu's (Reggie Lee) investigation into Trubel's background.

Lucas Near-Verbrugghe's Josh Porter is also expected to stick around for as long as Wesen's are chasing after him for an ever-important key. Earlier Grimm Season 4 spoilers indicate viewers will know more about the keys this season.

Grimm Season 4, Episode 7 was written by Dan Fesman and directed by John Gray. These details were part of the teasers in actress Bitsie Tulloch's Twitter post in September. The actress who plays Juliette has also posted this Grimm cast photo as a holiday treat to the show's avid viewers.

Grimm Season 4 airs Fridays on NBC.

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