It’s entertaining and intriguing Wesen-centric episodes like “The Seven Year Itch” that make it even more bitter sweet that this is the final season of Grimm. This episode introduces us to a couple of new Wesen, one in particular that likes to pop up from the earth every seven years. I love how the writers channel Greek mythology in “The Seven Year Itch,” making me wonder if Dionysus was Wesen.