Nick (David Giuntoli) has just found that it was Renard (Sasha Roiz) who was kissing Juliette (Bitsie Tulloch) in the spice shop.
He gets out of the car, bent on confronting them, but gets a call from Monroe, who insists that they can't control their actions and that Rosalee can find a way to cure them.
Club's Kevin McFarland gave the episode a "B+" grade and wrote, "Grimm has shown that when the serialized pieces click into place, it becomes far more compelling.
The best case-of-the-week episodes — last season's 'Organ Grinder,' last Halloween's 'La Llorona' — are good examples of how to keep the wheels spinning without losing interest.
But the little tidbits of information that expand the Wesen world—the conflict between the rebels, the Verrat, the royals, and the Grimms they traditionally employ — is the most fascinating and important part of a supernatural/fantasy show like this.
It's taken quite a while for the mythology and characterization to catch up, but as the characters have been filled in and a clearer picture of what's going on in this world is revealed, Grimm has improved more often than it has stumbled.
The four dead bodies – all Verrat, three of them men – were never disposed of nor were they hidden, although taking their ids and doing the act in an area not beholden to surveillance cameras keeps Nick's secret under wraps.
Secrets were revealed in a way that felt satisfying and also gave rise to more questions; characters were thinking as fast as they were reacting, crashing headfirst into the changing status quo.
Though I'd be happier if Monroe and Nick had more gradually pieced together the Hexenbiest/Juliette's Memory Loss puzzle over a few episodes instead of figuring it out all at once, once things started to dawn on them, a lot of fun was had.