Losing coherence

I know I'm starting to lose coherence lately.

Well, I haven't been entirely honest with you. See, when I said the stranger's face was blurred by the flash, I knew what really happened. The camera revealed the truth.

And I've been losing sleep. I mean, how am I supposed to sleep when no matter where I go there's a stranger staring at me, no matter what time I go to bed I hear something whispering to me and dragging something metallic across the ground as its dark shape moves away?

I'm not imagining things.

Or at least, I wasn't.