We switch to Alexx -- who has changed into something more autopsy-appropriate -- as she examines the arm, which is attached to a modest chunk of torso. It weighs 28 pounds, seven ounces. This information would come in handy if we had any context for it at all, as in how Alexx might use it to extrapolate the overall body weight of the victim, or how a forensic artist might try to get a general idea of how the victim was built. Here, however, things like explaining the data might get in the way of Horatio's screen time, so we'll never find out why we need to know the weight of the arm.
Oh, look, I went on a road trip to Rantville and forgot you were strapped in beside me. Want to stop at 7-Eleven for a Slurpee and some Funyuns before we head back? No? Okay then -- back to the scene. Alexx is puttering about the morgue as Horatio pulls his usual voice-of-God stunt. Alexx tells Horatio the body part in question has gynecomastia -- an enlarged breast which is usually caused by an imbalance in androgen and estrogen hormone levels in a man, something that can be caused by diseases (Kleinfelter's Syndrome, Reifenstein's syndrome, types of cancer that affect hormone-producing glands), by drugs (cannabis has been linked to gynecomastia, for example) that are believed to affect the liver, or by age. Alexx points out that the gynecomastia introduces some gender ambiguity; adding to the confusion, there's no armpit hair, but pronounced hair on the knuckles. The lack of armpit hair -- typically linked to androgen production at puberty -- might be a big honking clue that they're dealing with someone who's suffered a hormonal imbalance. Or it could be something based in logical deduction and fact, and therefore has no place on this show. What was I thinking? Anyway, Horatio asks Alexx what she's saying about the mystery arm, and Alexx says, "What I'm saying is I'm not an anthropologist. Could be a big woman. Could be a small man." She then tells the arm she's going to get its blood type. That Alexx, making small talk with the smallest of body parts.
After Alexx takes a swab, she goes back to examining the hunk of flesh: "Stippling and some GSR inside the wound. The shot was fired at close range." As Horatio watches all this from outside the morgue, Delko walks up, grinning like a maroon. "¿Que fue?" Horatio asks, and Delko replies, "I just got a look at that tiger shark in the cooler. Liberal eaters, like Speedle. They'll eat anything as long as it's alive." And Speedle does too? Horatio then summons Alexx with the voice-of-God mike to make sure she heard. She did. Alexx continues giving her observations: "Dermal ecchymosis around the teeth marks. Capillaries inside the deltoid muscle are hemorrhagic. Blood was circulating at the time of the injury." Delko observes, "That was like ringing a dinner bell. Two thirds of the tiger shark's brain is dedicated to processing scent." We then go to the shark-cam, where we see someone treading water while a shark swims up behind them. The camera wusses out at the last minute and cuts away, which I find surprising after a premiere devoted to repeatedly showing us a woman falling to her death. But that sort of shot might cut into Horatio's screen time, so we're back to him asking Alexx how long she thinks the victim was in the shark's stomach. Alexx replies that she'll have to test the levels of regurgitative enzymes. Delko reminds us that sharks regurgitate anything they can't digest. "Hmmm. Like human bones," Horatio says, sounding very happy in a then there's more for me! kind of way. Just then, Alexx pulls out a bullet, thus providing Calleigh's excuse for being in the episode later. Meanwhile, Horatio wants a close-up of a tattoo on the arm, as opposed to actually going down there and checking for himself. Why can't he go down there? Why? I don't care how cool the toys are; it's just plain stupid to have him examining a body two rooms away when he could just as easily stand next to it.