Lethal kick

Now real fury filled her eyes. She cocked her gun and opened her mouth as if she were going to actually speak to me, but I never got to hear what she was going to say.
Murphy made a soundless, barefooted run, leapt, and drove a flying side kick into the back of Bodyguard Barbie's neck. Whiplash was far too mild a word to describe what happened to the woman's head. Whiplash happens in friendly, healthy things like automobile accidents. Murphy meant the kick to be lethal, and that made it worse than just about any car wreck.
There was a crackling sound and Barbie dropped to the floor. The gun never went off.


Blood Rites Chapter 40, Page 339