Don't get me wrong I was riveted when I heard there was to be an evil Grimm and for the most part the episode delivered My problem is with the ending. I like the twist there but they could have drag out the plot a little. The way he was caught was too anticlimactic after all the talk of the Endezeichen. They could have done a few more episodes of this while Romeo and Juliette was happening behind Nicks back.
I knew the intern(Wendell from Bones) was going to do something but and I even told my brother that as we watch But I didn't put it together that he was the Endezeichen. Even Renard was worried.