Ep 18. Volcanalis

In Grimm season 2 episode 18, titled "Volcanalis," Nick and Hank investigate a deadly arson case in which a man was burned alive in his own home. The detectives quickly discover that the perpetrator is not human but rather a Volcanalis, a fiery Wesen with the ability to manipulate flames.

Meanwhile, Juliette continues to deal with her amnesia and strange supernatural dreams. She seeks help from Monroe and Rosalee, who introduce her to the world of Wesen and reveal the truth about Nick and his role as a Grimm.

As Nick and Hank track down the Volcanalis, they also face challenges within their own department. Captain Renard is implicated in a high-profile murder case, and Internal Affairs starts an investigation into the Portland Police Bureau.

The Volcanalis proves to be a formidable foe, and Nick and Hank find themselves in a dangerous situation as they try to capture him and bring him to justice. Along the way, they uncover surprising information about the arson case and how it connects to the Wesen world.

As the episode comes to a close, several storylines begin to converge, setting the stage for the remaining episodes of the season. Nick and Juliette face new challenges as she discovers more about the Wesen world, and Renard's past comes back to haunt him in unexpected ways. Overall, "Volcanalis" is a thrilling and action-packed episode that expands the mythology of the show and sets up several intriguing storylines for the rest of the season.