"Olson and Kahler stood there while I went through my head process. Olson knows me well enough to let me go and Kahler demonstrated a level of experience that showed he'd been through this with investigators before. Sometimes you've just gotta let the processing happen. "Okay—I've been thinking that this must have been done with a little .22 handgun. If that were the case, you should have found the bullet in the remains, or under the body. You didn't, so it must have been something a little bigger than a .22—maybe a 5.7. That might get a through-and-through at close range." The FNH—Five-seveN—was a relatively new gun that had developed a devoted following. Reportedly being used now by the U.S. Secret Service, it is a super lightweight handgun that shoots a 5.7mm round that looks a lot like a rifle round with its stepped neck cartridge. But its popularity with law enforcement is largely due to the fact that the bullet is a tumbler and not a penetrator. That means that it won't go through people and hit other things you don't want to hit—that, and the 20-round magazine. [...]"