Taylor's walking with Skye, telling her that he has to go "OTG" because no one on this show is allowed to say "outside the gate" ever. Because she seems concerned, he tells her that he'll be back in 24 hours and that the anniversary is on his mind too. It's been three years since the winter (like this place gets anything resembling winter) killed so many of the pilgrims, including her parents, and he says sincyllic fever has killed more of their people than anything else. Well, thanks for cheering Skye up! He says that when he gets back they'll take a walk out to Memorial Field together, and her parents would have proud to see how she turned out. She embarrassedly says that he says that every year, and he says it's TRUE every year.
Then this fresh-faced (albeit with a slight bald spot) soldier nervously asks Taylor what his reason is for going outside the gate, because all citizens need a valid reason to do so. Taylor's a little incredulous over being asked, but Jim strolls up to remind him that they're part of the new lockdown protocols that Taylor instituted. Taylor praises the soldier on a job well done -- the soldier beams -- but still doesn't give him a reason and the gates get raised anyway. So they're still looking for the spy, and Taylor's leaving Jim in charge while he's gone since he's the only one in the camp he trusts one hundred per cent right now (which says a lot about the sorry state of Terra Nova, I guess). And just as you're thinking "What about Washington?" Taylor says something about her being out at some outpost for the next few days. But still. And Jim JUST went behind Taylor's back to investigate him, so you'd think he'd at least have a lingering suspicion about that. But I guess not. Taylor rides out, and Jim squints after him.
Then we watch Taylor scramble over rocks and down waterfalls until he finds his son's formulas scrawled on the rocks. He spies what I guess is a fresh one, and then looks around and finds the remains of a campfire, which he scans with some sort of doohickey.
He's so preoccupied that he doesn't see or hear Mira sneak up and point her rifle at him. When he does, it's too late for him to draw his own pistol. He asks what she's doing out there, and she says the same thing as him: waiting to see if his son's got an answer yet. "Looks like he has," he says, and she says it looks like it's a lousy day to be Taylor, and orders him to put his hands behind his head and to get on the ground.