Nice callback to the Bauerschwein...funny to see Nick's first season haircut in the flashback
Although Monroe's flashback to "Mean Wolf" didn't really seem in character after all the development he's gone through since then. Plus, with all he's been through (and signed up for), especially the Wesenrein recently, you'd think he'd be a little less upset about having had a gun pointed at him, that's kinda just part of the game at this point. And he knows Nick tries to be a cop first and a Grimm second...that's how their relationship even works in the first place, so he cant act all high and mighty when Nick cares more about justice than about Wesen bs.
Juliette, Juliette...oh well, at least we got that out of the way. Juliette had her big SFX-heavy Dark Lord of the Sith fight scene and we all get it, you want to establish she's such a B.A. now because she's been so worthless before. I almost feel bad for Adalind, the universe really does seem to just poop on her parade every chance it gets. Grimm kills her mom, Grimm takes her powers, Grimm steals her baby, and now Grimm's girlfriend turns out to be a better Hexenbiest than she is. She never gets a win. But then again she puts herself in these situations by being completely worthless too, as a Hexenbiest, as a mother, as an international woman of mystery...you have to wonder if she was even a good lawyer or if they just kept her around to look good
Wu is turning into quite the bookworm, seems like he's the go-to trailer expo guy now. The Asian guy is good at studying, that's not racist at all...
I really liked the actor's performance as the firebug. He reminded me of Denis Leary in the face, but he really pulled off a cold, detached and capable diabolic professionalism that's been sometimes lacking from the trained hit men and assassins we've seen before. Its too bad they had to blow him up at the end, and in such a really anticlimactic way - *fzzt* - I guess they spent all their SFX budget on flying housewares...
I really dislike when they get technobabbly. If you're going to make it scientific, then do your homework and make it plausibly scientific. If you're not, just make it Wesen mumbo jumbo and that's fine, we accept it (except for maybe "frog toxin makes you immune to electric eels"). But spraying him down with Nickelodeon slime is somehow supposed to suppress phosphorus ignition? How exactly, then, did they get it on his *back*? Or what about all the rest of the places he clearly wasn't coated, why couldn't the fire burn there? And why couldn't a regular fire extinguisher, which blocks oxygen and prevents chemical fires by spraying a nonflammable powder or foam, have done the trick just as well, without having to invent your own super-soaker version? They make "Class D" fire extinguishers specifically for burning metals like phosphorus. And how are herbs and beeswax supposed to be "nonflammable" as they specifically said it had to be? You're just inviting that kind of de-suspension-of-disbelief when you're that sloppy with your writing and fact-checking.