Watchtower. Clark brings Lois inside for the first time. "Welcome to Watchtower, the official headquarters of the home team." "Which you are clearly on now," Tess says from the stairs. Lois looks a little wary, but Tess smiles and says, "Finally." Lois smiles back. It seems like Lois would have questioned Tess's role in the team, but she must know that there are only three minutes left in the episode. That wouldn't be nearly enough time for Lois to work through one of her rants, even at top speed. When Oliver joins them a moment later, Clark gets down to why everyone is there: "We all knew what the government was up to, but those prisons were part of a much bigger threat. Hate crimes are up, people like Slade... they're getting more control, and Godfrey's anti-vigilante message is reaching more ears than ever before, and I don't think it's a coincidence." Tess chalks it up to good, old human frailty. Lois gives Clark an encouraging look, so Clark fesses up about THE DARKNESS that came through the portal when he sent the Kandorians away. He says it's the worst fight they've ever faced. They can't see it to fight it. "It preys upon the dark side we already have, it feeds on our doubts, our fears and our distrust." He tells them about the omega symbol he saw branded on Slade's skull. Tess compares it to the biblical "mark of the beast." "Which would explain why he veered so far off his marching orders," Lois says. That or he was just a zealous war hawk. We have those in the real world, too, and they don't need Darkseid to corrupt them. Lois remembers Kara saying it couldn't infect anyone who had a pure heart, but Clark says everyone has a weakness. "If we can't stop it," he says, "THE DARKNESS will infect everyone on this planet." Everyone looks worried.