'Grimm' season 5 finale spoilers: Nick in danger as Trubel saves the day in 'Beginning of the End'

Nick is done with Black Claw's messing around in "Grimm" season 5 finale. Scott Green/NBC

The "Grimm" season 5 finale will come in the form of a two-hour season-ender that concludes in the ultimate face-off between Black Claw and Nick's crew. The two-parter is aptly titled "Beginning of the End."

Here, Nick will be the most eager he has ever been in bringing down the killer organization. The synopsis of the "Grimm" season 5 finale teases that Nick will go on a rampage when the Black Claw decides to add Hank to their hit list.

As hinted in the "Grimm" season 5 promo, Black Claw sends a monstrous creature after Hank. He was captured but his condition remains unknown. Either way, Nick will be very angry.

Nick is so close to taking on the Black Claw alone, especially every time he sees Renard with Adalind and his kid. Renard has won the mayoral race, the charade between him and Nick's family still goes on and Nick can no longer sit around and will go after Renard in the "Grimm" season 5 finale.

In the "Grimm" season 5 finale promo, Nick and Renard's discussion in the precinct turns into a brutal confrontation. In anger, the former throws the latter through the window.

According to rumors, Nick's rage will lead him face to face with death and that Trubel might be the only one to save him. Fans will remember that in the previous "Grimm" season 5 episode, the Grimm showed Trubel the miracle stick.

Meanwhile, Hadrian's Wall is multiplying their efforts to draw near on Black Claw's leader Bonaparte in the "Grimm" season 5 finale. Eve is doing her part by using her strength to strip down the number of Black Claw minions.

As all of this happens, Diana continues to use her powers to seemingly bring her mom and dad closer together. As she pushes the doll versions of her parents closer together, Renard and Adalind did the same and kissed.

"Grimm" season 5 finale "Beginning of the End" airs Friday, May 20 at 8 p.m. ET on NBC.

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