"Natural Born Wesen" was a return to procedural form for Grimm, but it also explored the scope of the Wesen world while doing so.

Monroe’s interactions with his fellow Wesen in the dive bar, and in general, is always an entertaining situation. The poor guy just seems to get along better with humans and the mild mannered Wesen (although he certainly knows how to protect himself) than with the more aggressive Wesen.

These interactions shed some light on Monroe’s own conflicting viewpoints, as he played with a Grimm as well as with Wesen tradition and culture. It’s an idea that isn’t always played around with on Grimm since Nick is usually the one with competing identities.

Nevertheless, Monroe’s continual support of Nick is truly admirable because the perks of being Nick’s sidekick and ally, at this point in time, is mostly one sided. He’s always putting his neck out for him – and while Nick definitely sparks Monroe’s morality and courageousness that just wasn’t there for his reformation – and I’m hoping Monroe begins to have a better give and take with Nick since it feels like Nick is taking him for granted.

One of the best aspects of tonight was how far the boundaries of the Wesen world stretched. In other words, since Renard and Nick’s tentative truce, more of the inner workings of the Wesen world are coming to light. And it’s surprising how much clout Rosalee herself has in this world.

One of Grimm’s greatest storytelling abilities is having the advantage of literally showing what is directly underneath the surface of its characters, using it to quickly give the audience a characterization; this technique has been used with Rosalee, but she’s continually breaking out of her meek shell now. This might be due to Nick, like Monroe, but some of it is due to her taking up her family’s business and finding her place in the Wesen world.

She clued DeGroot in on what was happening, and, naturally, Renard sent the pictures of the code breakers so DeGroot knew exactly how to take care of the situation. Renard seems to have his fingers in just about every pie.

Juliette was a little more tolerable here, probably because she was mostly alone dealing with her own issues. Issues, I must say, are a very welcome change of pace. She’s literally trying to traverse her own forgotten memories with Nick. Deep down, Juliette knows what Nick told her in the trailer, and this limbo of no memories and unexplainable feelings for Renard might have been the perfect escape from something that scared her. If she can overcome that fear, then her memories and love for Nick might coming rushing back.

A Few More Other Thoughts:

• Apartment 214
• Nick killed Adalind’s Hexenbiest self with some of his blood, why didn’t Renard’s half-Hexenbiest self go floating away too?
• Thank goodness for Hank’s nutshell recap, things were a little hazy after the ridiculously long break.
• Nick has the good sense to not put things in drawers that can be opened by anyone, but is hanging the key around his neck a better place?

Source:
http://www.tvfanatic.com/2013/03/grimm-review-code-breakers/