It's not something you'd see with the naked eye, ( he clarifies, ) But I can show you some of the tells we see on scans.

( All nerds welcome! McCoy looks thoughtful. )

Now, there's something I don't think many of us considered. You believe it's a case of identity theft?

( He waves the hand he's perched his chin on, shaking his head. )

I don't know if I'd go that far to speculate on the killer's mood one way or another though. The first few wounds are a mess, but that's because whatever they used wasn't meant to carve through flesh.