• David Giuntoli and Bitsie Tulloch speak at the 'Grimm' event during the TVfest 2016 presented by SCAD on February 7, 2016 in Atlanta, Georgia.

David Giuntoli and Bitsie Tulloch speak at the 'Grimm' event during the TVfest 2016 presented by SCAD on February 7, 2016 in Atlanta, Georgia. (Photo : Getty Images/Catrina Maxwell)

Beloved characters of the NBC supernatural series "Grimm" Season 6 might soon have to deal with a love triangle between Nick (David Giuntoli), Adalind (Claire Coffee) and Juliette (Bitsie Tulloch). However, Eve (Tulloch) might hinder Juliette's return given her mission to eradicate Black Claw.

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"Grimm" Season 6 is nearing the end of its 13-episode run which will also mark the NBC series' finale. With less than 10 episodes left, a long-awaited character might soon make her appearance in an upcoming episode, namely Nick's former love Juliette.

Nick has had to let go of the hope that Juliette will return given a powerful transformation that turned her into the emotionless and powerful Eve. Having moved on with his life, he started a new relationship with Adalind where the two even shared a child together.

Recent events in "Grimm" Season 6 episodes might have unraveled the shield that kept Juliette hidden deep inside Eve's persona. Given the mysterious power of the healing stick, Eve appears to be losing her tough demeanor and has begun to show signs of Juliette potentially emerging from her cocoon.

However, Eve will try to prevent Juliette from regaining control of her body. Tulloch told TV Guide that Juliette's return will not only complicate Nick's relationship with Adalind, it will also hurt the said character given her guilt over some of the things that she did in the past.

Moreover, Eve's willpower and intention to finish her mission of stopping Black Claw and destroying all of its members will push the said character to remain strong and in control. Given the impending end of "Grimm," Tulloch commented that viewers will be surprised with how Nick's love triangle with Juliette and Adalind will be resolved.

In other news, the upcoming "Grimm" Season 6 episode 7 will feature Rosalee's (Bree Turner) surprise birthday vacation treat for Monroe (Silas Weir Mitchell), according to episode spoilers posted on Spoilers Guide. With most of the couple's friends tagging along for the celebration, the party will end in disaster as Nick will be targeted by a vengeful hotel employee while Eve will encounter a dark force.

"Grimm" Season 6 airs every Friday on NBC. Watch the preview clip for the upcoming episode below: