When you watch Grimm Season 5 Episode 17 online, a teenager is kidnapped and subsequently murdered. At first, all they can find is the young man's head. When they locate his body, buried up to the neck, Nick and Hank realize that this murder is ritualistic in nature. They turn their attention to the death of the victim's friend some time before, suspecting that someone is taking revenge for the other teen's death. Sergeant Wu, meanwhile, is having nightmares and other strange physical symptoms connecting to his injury of several episodes ago. Adalind decides to return to work at her old law firm, which is very happy to have her back, since Hexenbiests are valuable. She still has not told Nick about the return of her 'biest, much to Rosalee's dismay. Renard continues to fall deeper into his association with Black Claw, and Monroe and Rosalee decide to explore the tunnel from the Home Sweet Paint Factory to see where it leads. Will the two of them find anything? Will Team Grimm call Adalind on the return of her 'biest? How far will Renard go in his partnership with Black Claw? Find out when you watch Grimm Season 5 Episode 17 online!