Nick (David Giuntoli), Hank (Russell Hornsby), Wu (Reggie Lee), Monroe (Silas Weir Mitchell), Rosalee (Bree Turner), and Trubel (Jacqueline Toboni) continue to search for clues in the Map of the Seven Knights.
Nick and Monroe travel to Germany on counterfeit passports, using Frederick Calvert (Rosalee's late brother) and Felix Dietrich as aliases, to avoid detection from the Black Claw.
Nick and Monroe travel at night to a spot in the forest near the site of the German Peasants' War, where they believe an ancient church may have stood.
Club gave the episode an "A−" rating and wrote, "Regardless of how you feel about Grimm having an overabundance of stories to tell, there's no question that when it manages to make one of them pay off, it's typically worth the frustration.
'Map Of The Seven Knights' last week was able to reinvigorate what was at one time the central mystery of the show, and 'Key Move' keeps that momentum going by turning a lackluster plot into a gripping one.
What if the missing keys were really important and would have warned Nick about a potential Aladdin situation where touching the forbidden treasure would fill the cave with molten lava?
"[6] MaryAnn Sleasman from TV.com, wrote, "All griping about Grimm's increasing ridiculousness aside, 'Key Move' was entertaining and fun with just enough serious business plot to avoid becoming the dreaded 'filler.'
It looks like Greenwalt is keeping his word as we approach episode 100 with Nick and Monroe up to their necks in the forest – literally – being pursued by a bunch of bad guys with murder on their minds.