Anyway, frangible bullets are old news to David, who harrumphs, "That would explain the shattered femur; it's covered in copper dust." We see the shooting, the environmentally friendly shattering of the femur, and the gory wound. David comments casually, "I'll remove the heart, peel back the myocardium, and get you what's left of that bullet." Gil's already over the bullet and has moved on to other things, like the x-ray of the dead guy's dislocated shoulder. He asks about the shoulder, and David tells him that the muscles were torn, but there was no inflammatory response. Gil deduces that it happened post-mortem. Just then, Emergency Backup David bursts in: "Excuse me. I'm off to the hospital. Taxi driver didn't make it." David comments, "Another one for my table." Gil purses his lips, then comments, "Emerson once said, 'The mob is man voluntarily descending to the nature of the beast.' The beast is up for murder."
And a boy is up for basketball. A kid is busy playing in his driveway when Brass approaches him with, "Hey, buddy, how's it going?" The kid thinks it's going well enough to lob Brass the ball. We find out that this is Eric, and that he's about to move. Brass says sympathetically, "Yeah, I moved around a lot as a kid. It's not easy. So, you going to be seeing your dad?" "My dad's dead. He died when I was two," Eric says flatly. Brass files this information away for future reference, passes the kid a business card, and exits.
Meanwhile, in Ballistics, Gil's having a tête-à-tête with Bobby the ballistics tech, who's telling him, "These were originally used in indoor shooting ranges where lead build-up's a problem. Less toxic than lead." We establish that the bullet fragment recovered from the victim's heart matches the barrel-score patterns on a bullet test-fired from the revolver found at the park. Sara comes in, and Bobby proudly tells her he made a match to her revolver. "Nice," she tells him, then turns to Gil and tells him that she made a match to the gun via NCIC, and it turns out the gun is registered to Jonathan Ruarch of San Jose, California.
Cut to Ms. Branson tearfully saying, "John's my ex. Is he in Las Vegas?" Brass replies only that he found a gun registered to John in the park where Todd was stabbed, and adds, "When I spoke to your son Eric, he told me that his father had died years ago." Ms. Branson says, "That's what I told both my boys. I told them John was killed in a car accident. It's not easy to lie to them like that. Every time I move, I have to make up some crazy story. I just want them to be able to sleep at night." And they're able to do that because the prospect of their mother uprooting them seemingly at random won't induce any sort of anxiety at all? I realize her intentions are good, but I still think it would be better to be up-front with the boys. Gil makes a face, but returns to the business at hand, saying, "Ms. Branson, we also found a dead body in the park. A white male, in his mid-thirties." "Do you think it's John?" she asks, almost eagerly. They don't know -- but they do have a photograph of the man on the autopsy table, which they hand over. Thankfully, it's from the neck up. Unfortunately, it's not John The Psycho Ex, but rather Ms. Branson's current beau, Stewart Bradley. Wow, does she have bad luck with men.