The thing you killed without even thinking about it, the way you started the war because it was disgusting and too alien, the human reaction because you assumed it wanted to hurt you, the thing that scared you so bad you got brutal: it's got your DNA. Everything you ever shoved under the bed, everything that was too gross or wet or smelled weird, the show wants to bring it out and say this: It's got your DNA. Maybe you don't jump so fast with the baseball bat, next time. John's with D'Argo -- where a hatch seal is covered in blue goo -- and wigs about his DNA, and Zhaan's just like, "Ask the analyzer, dude." He tells her to try again, and she tells him she needs another sample. "Oh yeah, no problem. Hell, the damned things are related to me." Aeryn asks John what's behind this seal that D'Argo's cutting into, and D'Argo explains that it's a hatch into the "ion backwash chamber." I love the ion backwash chamber. Crazy shit always happens in there. "Should be a giant empty room. The beetles have completely isolated it. All four entries are sealed. Pilot, we need that alternate entry," he growls, and Pilot says he's working on it. D'Argo tells John, confused, "Nothing can resist a prism laser saw!" John says it's not doing the trick, and that Zhaan wants some more bugs. "...Wants to check some unreliable data." Aeryn is now weird and rude: "Huh! The data's not the only unreliable thing around here." John's taken aback, and D'Argo explains the problem, which is a very scary problem we didn't know about: "Sebacean heat delirium. Sebaceans lack the gland necessary to regulate extreme thermal increases." Aeryn slides down the wall, thrown, and John draws a microthin line in the sand: "Wait, Crais and those other bastards chasing us are cold blooded? Literally?" Not Aeryn, just the "bastards." D'Argo characterizes it as "a weakness not enough of them die from." So they can die from it, huh? But not Aeryn, because he's seen the evidence that nothing can stop or injure or penetrate her. You can't even make her laugh! Just the "bastards." D'Argo's tired of waiting, and tells Pilot he's gonna start cutting. Pilot wigs on him as he starts, and a DRD gets him in the leg. D'Argo yells at the little guy and even kicks him, and tells Pilot he had his chance. Pilot growls at him pissily, in that awesome Pilot way, and D'Argo keeps cutting.
John sits down next to Aeryn in the corridor, where she's getting all hardcore about busting open that hatch, and he tells her she needs to lie down. "No, I need to be left alone." He bites a thumb and gives her the puppy dogs, so she morbidly explains to him the science of heat delirium. "As our cells overheat, the nervous system shuts down: first short term memory, then motor functions. The last to go is long term memory." He says it's an ugly way to die, but that's not ugly enough for this show: "We don't die, our body lives on in that state. It's called the Living Death. It's the only time we kill our own for mercy." Figures the quality of mercy would only come up in something that awful. D'Argo finishes the hatch and looks inside, spotting...another bulkhead. This causes him to punch the wall, and then a bunch of creepy crawling and squealing from inside, and the lights start flashing darker and lighter.