Drama, action, adventure, and danger lurk in every nook and cranny of this “Grimm” episode, “Where the Wild Things Were.” I thought I was doing a good job of preparing myself to say goodbye, building my strength for the upcoming series finale, but after watching this episode, I’m not sure if I’ll ever be ready to say farewell to the Scooby Gang of Portland. “Where the Wild Things Were” picks up where “Blood Magic” left off as Monroe (Silas Weir Mitchell) and Rosalee (Bree Turner) find their mirror uncovered, with blood on the edge, and Eve (Elizabeth Tulloch) nowhere to be found.