They leave the lab and walk into the elevator along with that random guy from the hallway. He immediately puts his headphones in and starts singing along to "Car Wash" by Rose Royce. Both Tess and Carter smile at the sight of a non-uptight GD employee, as if they're not uptight themselves. The elevator arrives at its destination, and the guy immediately stops singing and de-elevators with his cart of random objects. Tess and Carter part ways.
Carter sees Henry in the lobby and tells him about S5 being re-opened, even though Allison told Carter that was a secret. Henry doesn't respond, just tells Allison that he did some checking and the disturbances in Café Diem and Carter's office have nothing to do with "the signal." He adds that the signal is getting stronger, but they really don't have anything to be afraid of until right around the season finale. With that, Allison and Henry walk away without acknowledging Carter's presence. He turns to Fargo and asks him if he knows what the signal they're talking about is, but Fargo doesn't respond to him, either, not even when Carter yells at him. Then Drechmeyer walks up with his TIRD detector. Carter tries to talk to him, obviously desperate at this point to get someone -- anyone -- to verify his existence. Drechmeyer doesn't respond either, although he is reading high amounts of TIRDs in Carter's location. He walks away, and Carter asks if anyone can see him. Only one person responds in the affirmative, but it's Tess, and she's having the same invisibility problem. Then Fargo walks right through Carter, which doesn't look pleasant for Carter but which Tess thinks is really cool. "Do that again!" she says. Why don't you do it if you like it so much, Tess? Carter isn't finding this amusing in the least. "Are we dead?" he asks.
After the break, Tess has decided not to answer Carter's question in favor of asking him questions about what it felt like to have Fargo walk through him. His answers are unsatisfactory, so Tess decides to try it for herself. I'd laugh if she ended up being solid and got bumped into. But no, she's walked through just like Carter was. "We can't physically interact with anything in here!" she announces. Well, no -- except for the floor you're standing on. How does that work, exactly? Tess is so excited about having one of the universe's secrets revealed to her that she doesn't think about how much living that secret is going to suck. Carter, of course, hasn't met a universe secret that didn't cause him all kinds of problems, so he's a little bit annoyed. "We could be dead!" he says again. Tess hugs him. "If we can feel each other, how can we be dead?" she reasons. Um, because you're both dead? I mean, obviously. That's how it always worked on the cancelled-too-soon sitcom Nearly Departed, where a ghost couple refused to leave their house when new owners moved in. Living people could walk right through them, but they could touch each other. Clearly this is one of the universal rules of being a ghost. Tess says that there would also be a bunch of fellow dead people walking around. That does actually make sense. Considering the ridiculously high mortality rate at GD, that place should be haunted up the wazoo. To prove this, Tess calls out for any dead people to come forward and meet them in the rotunda. Oh, that's what the GD lobby area is called? A rotunda? I'm going to use that more often. Tess has proven herself useful to me after all. Carter asks if this could be something having to do with the Casimir Effect Henry told him about. But since it's Carter, he calls it the "cashmere effect." "Over-paying for a sweater?" Tess says. Carter is not amused. Tess babbles for a while until Carter tells her to just figure out what happened to them and try to fix it already. "I have no idea," Tess says, looking worried for the first time. I guess the novelty of learning a universe secret just wore off.