Instead, they just lose their guns, so all they have now are one big knife and one HUGE knife. Drying out on the beach, they discuss the slasher problem -- it's a young male and female who are carving out their territory and are probably making their way down the side of the falls. "We can fight each other or we can fight them," Taylor says, and he gives Mira the huge knife, which counts as a major goodwill gesture for him, I imagine. Since they're not going to be able to make Mira's rover by nightfall, they decide to stay and fight where they are, because of the good sight lines and defensibility, and the New York Fries outlet nearby, which will provide much-needed sustenance.

Back in the infirmary, it's dark and Skye creeps into the room with the DNA Identitron 3000 and drops a little liquid into the dish, causing it to hiss and the machine to go haywire. It's totally plausible that she does this. After all, there's no security at the infirmary despite: A) the ongoing theft of medicine and B) the fact that there's a spy on the loose in Terra Nova.

Nightfall in the wilderness. Taylor's carving a bow while Mira's making some pitch -- not that Taylor thinks she's doing a good job. He says it'll never catch fire, that it's too thick. "I know how to fight these bastards. I spent a hundred and eighteen days out here on my own," he says. "Good for you. I'm coming up on a thousand," she says. Point: Mira. She adds that they lost a lot of good people out here, but they learned to survive. Taylor stares at her, wondering to do about the erection he's clearly getting.

Oh god, back at Terra Nova, Mark has an awkward conversation with Jim about what's important in life, which is short, and he eventually says, "I would like to declare my intentions for your daughter." By which he means one day he wants to make her his wife, and Jim's all, "She's sixteen," but Mark gallantly agrees to wait, and Jim would rather not discuss the dowry right now because they have a spy to catch, and he's going to go check on the blood sample.

But he's not going to like what he finds. Elisabeth is there, because one of the night nurses called her. The sample's destroyed. He wants her to put together a list of all employees, patients and the families who came to visit. She says she will, but it won't be a short list. "Maybe not, but it's a list, and the mole's on it. It's a start," he says.