Following the first season, where Grimm, a young but successful detective, who once finds out that he has a superpowers that inherits from his ancestors, as he can see supernatural creatures, as he fights them in order to save humanity, and he joins his mother, who also chases the evil in the world.
Nick's fate in "Goodnight, Sweet Grimm" might have become obvious in the final minutes of the finale, but watching those suspicions play out didn't lessen the weight of it. They only made it more exciting.
Halfway through season two, the series is still taking baby steps toward realizing the underpinnings of its own extended metaphors, of exploring what it means to reveal oneself only by losing control.