In the lab, Walter comes rushing over to Peter with news of an exciting discovery he's made: Mrs. Hughes did give birth. "I'm glad we got that settled," Peter snarks without looking up. But wait, there's more! The placenta was still inside the corpse (which seems like some sloppy-ass undertaking to me), and Walter was able to run some tissue analysis on it. Looking at the printout, Peter can somehow tell at a glance that the baby wasn't entirely human. Although, to be fair, I think he had kind of a head start on that one. Walter confirms that Hughes was researching reproductive biology and gene replacement. So it looks like he used scorpion DNA ("an incredibly resilient creature," Walter reminds us) and maybe also that of some kind of underground varmint like a mole rat. Peter admits that since scorpions paralyze their prey, it might explain the blue liquid. It would also explain Billy's tendency to rock his victims like a hurricane. Astrid comes in and Peter updates her on the news that Hughes altered his baby's DNA inside the womb to help him survive the lupus. Astrid says that's sick, but Walter says it's brilliant. "He's created a superbaby! One capable of surviving in the most inhospitable environment." And with early 1990s technology, no less. Still, other than its survival skills, it doesn't seem all that super to me. And not to give anything away, but it'll soon prove lacking in even that department Just then Olivia walks in, having heard the whole thing (from the quad, most likely). And she thinks she knows where Billy is: in or near the house. "Or under it," Peter says. You think?
His work finished, Sheriff Golightly stows the roll of crime scene tape in the back of his squad car. He's just walking around to the front to get in when he notices the blue puddle that has appeared on the yard. Sheriff Golightly, who has personally handled some of this stuff at the scene of at least one disappearance, stares at it curiously. And also at the crack in the dead lawn that's slowly spreading towards him. As opposed to what any normal person would do in these circumstances, which would be to hop on the hood of his car. And then suddenly that crack is stretching out toward him not so slowly, and a moment later he vanishes into the earth with a scream and a plume of dust. The crow on Hughes's scarecrow caws. I think it's saying, "Didn't you ever see Tremors, you moron?"