When you watch Grimm Season 4 Episode 8 online, you join Nick and Hank as they investigate a brutal killing that the only witness attributes to the Chupacabra, a creature right out of urban legend. Naturally, the two intrepid detectives suspect that something Wesen is at work. They don't know that the Chupacabra is actually a kind-hearted doctor, lately returned from the Dominican Republic, who has no idea that he was responsible for a murder. Sergeant Wu is just about at the end of his rope regarding the secrets Nick and Hank have been keeping from him, and Nick and Hank begin to feel that it might be time to explain the truth to the sergeant. Meanwhile, the Wesenrein organization continues its threats against Monroe and Rosalee for their cross-Wesen marriage, leaving ominous phone calls and bloody warnings. When you watch Grimm Season 4 Episode 8 online, you see as the threats against the Blutbad and Fuchsbau couple come to an ominous peak, and Nick and Hank are distracted by the case they're working when another person falls victim to a Chupacabra attack. It's up to them to stop the creature and prevent any more deaths.