Nick (David Giuntoli) and Hank (Russell Hornsby) have seen their fair share of Wesen on "Grimm," and even Juliette (Bitsie Tulloch) has been granted admission into the elite group of humans that are aware of their presence.
And, of course, Monroe (Silas Weir Mitchell), the Captain (Sasha Roiz) and Rosalee (Bree Turner) actually are Wesen, so the only one left out in the cold up until now has been Sgt. Wu (Reggie Lee). But that all changes on tonight's episode, when he comes face-to-face with something he can't explain when he's called out on a case and discovers that a woman he loves and her unborn child have been attacked by a horrible new predator that creeps into her bedroom.
The "Mommy Dearest" episode of "Grimm" is actually based on Filipino folklore as told to the writers by Lee, who filled them in on the legend of the aswang. The writers put their own spin on it, as did the special effects critter makers who came up with a creature that is totally gross.
"As a kid, you grow up thinking that this stuff is real," Lee told Examiner.com "And of course, it's like Santa Claus, right? At some certain point you're like, 'Oh, no. Whatever.' But then what Wu saw seemed pretty real to him. So he's got to figure that out for himself."
Of course, the question becomes do Nick and Hank bring him into the loop, so that all the main "Grimm" characters are now part of the gang, or don't they? Interestingly enough, the two detectives are split on what to do.
As for his part, Lee feels that it might be important to keep Wu ignorant as to the existence of Wesen so there's some sort of balance.
"If everyone knew, I think it would be less of an effect, right? If there was no one that was like, 'Uh,' the balance wouldn't be there. I think that's really important for the show," Lee says. "That being said, you had shows like 'Buffy' where kind of everyone knew. And so everyone was in the fray and doing their thing. So [our] creators, I think they're kind of weighing the options in terms of that."
Also on tonight's episode, Adalind (Claire Coffee) prepares for a special delivery while her enemies are hot on her trail -- and discovers that a promise made to her was kept.
"Grimm" airs Friday nights at 9 p.m. ET/PT on NBC.