When you watch Grimm Season 4 Episode 22 online, you are thrust into the moments after Nick discovers his mother's decapitated head in a cardboard box in his home. He is all but dragged away by Trubel and Hank, who realize that the Royals will be coming after Nick next. It becomes a race against time for Nick and the others to locate Diana, who was taken away by the Royals to join her grandfather, King Frederick, who has arrived in Portland in anticipation of his granddaughter's retrieval. When Nick realizes that Juliette was responsible for setting up his mother, it becomes a no-holds-barred path of war for him, and he declares that it is time for her to die. Captain Renard, meanwhile, must deal with the repercussions of being bodily responsible for the Jack the Ripper killings, even if he was not consciously aware of the murders being committed at the time. This season finale episode is fast-paced and action-packed, with numerous battles to be fought as Nick tries to get there in time to prevent the Royals from escaping with Diana. Will he succeed? Or will the little girl be whisked away to Europe, never to be seen again? Find out when you watch Grimm Season 4 Episode 22 online here at TV Fanatic!