Orphan Black‘s Fourth Season Ends on an Incredibly Dark and Exciting Note
(Episode 4.10, “From Dancing Mice to Psychopaths”)

Well, that certainly got dark.
Yes, in start contrast to last year’s Orphan Black finale, which ended with Sarah reunited with Kira to the ethereal beauty of Sigur Ros, “From Dancing Mice to Psychopaths” (one of the show’s best episode titles, by the way) is the definition of a cliffhanger. Across the board, every character ends this year in grave danger. Rachel ascends back to the top after betraying those around her and, as icing on the cake, the supposed Big Bad of the whole series prepares to unveil himself. This is not at all surprising given that, earlier in the day, a press release announced that Orphan Black had been renewed for a fifth and final season. Still, in terms of teeing audiences up for the final year, this offers up a whole lot to chew on. The absolute worst thing you could say about this finale is that Alison is conspicuously missing.
As the episode opens we witness the final gasp of Evie Cho’s very brief stint as top gun after the clones exposed Brightborn’s nasty secret experiments. In retrospect, the whole Brightborn/Evie area feels like a bit of a wash. It also stinks that a villain as weak as Evie was the one to cause the Clones so much pain, by both killing Kendall and destroying their research (as short-lived as that was). It’s like if Spider-Man were finally defeated—not by Doc Ock or the Green Goblin—but by some lame one-off character like Kangaroo. As a final insult, Evie’s impotent cries of rage at her dismissal are quickly silenced after someone uses a bit of tech to worsen her genetic abnormalities, which appears to kill her or, at the very least, disable her in a major way.
With all that business out of the way and Cosima having figured out a cure for the clones’ degeneration, all is looking well in the world of the Clone Club. Krystal even appears and, after displaying an impressive grasp of all the players and conspiracies, reveals that Evie’s replacement, Dr. Van Lier, is the same man who took away Delphine’s body from the parking garage after she was shot down by Duko.