A little while before that Hatake told Alan that he knew what Spencer's weakness was. He meant Constance. Though we didn't see him get her head, we know that Hatake retrieved the head and gave it to Alan at some point.
One thing I can say is that the writing for this episode was so much better. I will definitely be watching season 2 next year and I hope they replace some of the writers by then.
I'm so glad it's not just me! I had such high hopes for this show. Well, there's always Orphan Black. My other Fringe replacement. I just hope that show stays strong.
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