When you watch Grimm Season 5 Episode 10 online, Monroe's uncle in Europe, an antiquarian named Felix, uncovers a priceless cache of Grimm texts and weapons in the estate of a man who had died of old age. Felix, knowing Monroe's friendship with a Grimm, offers to sell the cache to them. Unfortunately, Black Claw also wants to get their hands on the cache to destroy all things Grimm, and two Anubis soldiers will stop at nothing to track it down and annihilate it. Felix asks Nick for $100,000 for the books -- money that Team Grimm simply does not have. How will they come up with the money? Because they surely cannot let this opportunity slip through their fingers. And what about the ruthless Black Claw killers that are still out there? Meanwhile, Nick is still trying to understand his relationship with Adalind, and all of Team Grimm is still trying to wrap their heads around the concept of Eve, who is not at all bothered by their confusion. Will Nick and Team Grimm be able to acquire the priceless collection of Grimm knowledge? Or will the Black Claw soldiers destroy it? Find out what happens when you watch Grimm Season 5 Episode 10 online.