Stealth shooting Agent Smith in the side of the head

Something sharp yanked Christian’s skull to the left, like she’d slammed the side of her head into a beam or pipe. Her sunglasses tumbled away and the side of her face sagged. Just as the sound of the gunshot reached her, the dark line along her temple burned into her skin and became a stream of hot blood. It soaked her ear and her jaw and rained down on her shoulder.
In the corner of her eye, a shadow slid closer across the parking lot. Stealth had one of her Glock 19s aimed at Christian’s head. A faint wisp of smoke came from the barrel. “That was a warning,” she said. “Do not move and do not speak.” She walked forward and her cloak swirled around her.

Excerpt From Ex-Purgatory, pg 602-603
Peter Clines
https://books.apple.com/us/book/ex-purgatory/id676938479