This may very well be the hook.

Every bloody part of this episode was awesome; the Buffy part was both sad and also funny, at times; the Dawn part was one of the scariest and most creey sequences of scenes I’ve seen in a long time; the Willow part started out sad, but grew more and more creepy the longer it lasted (although I think the “thing” should have taken more time to make Willow ready for its suggestion; it came far too sudden to awaken anything but suspicion in Willow); and the part about the two geeks was… well, compared to the other three it was rather boring, but it certainly ended in a way that more than weighed up for the slow start.

Oh, and Spike… wow. Problems of adaption, perhaps?

All in all a most gratifying episode, though not gratifying enough. Me wants more! :D