"Grimm" season 5 may prove the stressful and most miserable for Portland's best detective yet. Nick, who saw the love of his life die in the arms of Trubel and found his brutally murdered mother's head in a box in his home, knows nothing but revenge.

Hell-bent and set for vengeance, one would ask how fit Nick is in taking on his paternal responsibility to his and Adalind's baby. He has a lot going on inside his head and a lot to figure out knowing that the killing of Juliette could be part of a bigger conspiracy he now so achingly wants to uncover.

In a trailer for the first episode of "Grimm" season 5, which is titled "The Grimm Identity," it is revealed that his veterinarian turned hexenbeist lady love is really dead (as opposed to what others claim) and that the season directly follows the events that happened in the season 4 finale.

Nick tells Hank, who is still struggling to believe Juliette is no more, that Juliette's body and his mom's head have been taken by Agent Chavez, who he thinks is part of an organization whose intentions remain unclear at this time.

However, Nick seems to be sure that Agent Chavez is up to no good and that the vanishing of the bodies is some sort of the group's way to wipe away incriminating evidence of a murder committed by a Grimm that is Trubel and the existence of the group itself.

From the looks of it, Nick has enmeshed himself into something big, which could very well be his main adversary in "Grimm" season 5. If Chavez really is part of a sinister group, Nick will hit two birds in one stone as he gives justice to the death of the two most important women in his life and brings this organization down.

"Grimm" season 5 premieres Oct. 30 at 9 p.m. ET on NBC.