Episodes like "Ruthless in Purpose, and Insidious in Method" are what make "Orphan Black" special. It checks all of the boxes - incredibly strong performances, new characters who are almost instantly interesting, answers to questions, new questions that are more pressing than the ones we just got answers to, and punches of humor. With only two episodes remaining this season, this is exactly the type of episode the show needed to get back on track after the frivolity of last week. The episode begins with the introduction of another new Leda clone. This one is vaguely familiar, she was the one we saw on security camera footage with two Castor clones earlier in the season. Krystal Goderitch (Tatiana Maslany) goes from a caricature to being a well rounded character over the course of this single hour. Once she comes into the orbit of the main characters, she has one scene...