It's a very intriguing concept, the mind of a serial killer. I can only imagine the twisted things that would be dancing through their brain waves, especially considering that this particular story is obviously somewhat psychotic.
The fact that you specifically mention that the character feels no regret leads me towards a single word: sociopath. Which I've always found an interesting subject, simply because they feel no emotions.
I'll go ahead and subscribe, even though I can see you haven't updated in quite a while.
I like it a lot so far. I'm not one for Original Fiction but this has caught my eye and in some parts, my throat. I hope to see more of this in the long run. :]
I love it.