Slowly, but without hesitation, Zillah's hand creeps into Charles's and squeezes. Offering comfort or seeking it; there's no telling which.

As though in response to the gesture, Charlie lets out a breath and nods. "This isn't something a lot of people are aware of," she says. "Even most of the Tet Corporation didn't know until years later....

"There was a, an artifact. In the long-term storage lockers, under the World Trade Center."