*shivers* I had a feeling early on that this was going to be Dark. I'm not sure whether or not to be sorry for Harry, though, since, even though Severus appears to be acting, he's still making Harry happy. That last paragraph was a bit of a mystery to me, the Dark possibilies really are endless, aren't they? Very creepy story, which I presume was what you were going for. ;) If so, well done!