[Spoiler (click to open)]The biggy is that Lena is apparently going to stay dead, unless someone else goes the metronome route, which is a shame because she was one of my favourite characters. The big plague problem is resolved, though opening up an exciting new can of worms which we don't know much about yet. James Marsters guest-stars as an antiquarian, and I suspect is going to become a recurring character, along with his nemesis. Deliberately keeping this vague since it really would spoil your fun if I said more.
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