The fourth option. “There’s a good possibility,” Langdon had told them minutes earlier in the basement boiler room, “that even if we take the meeting with Finch, and he believes we’ve signed those NDAs, he’ll never share what’s really happening at Threshold. There’s only one way to be certain we have the information and the proof we’ll need to protect ourselves—and that’s documentation and photos.” He paused, eyeing them both. “Somehow, we need to get inside Threshold.”