[He's got thoughts on the Fog, too, although they're less concrete. Then again, she's harder to pin down by virtue of her nature, and she's the bigger threat in some ways. So she's the next problem. For now, this.]

[And a question he can answer helpfully, as it turns out. His expression doesn't shift terribly much, but somehow manages to look much more mischievous all of a sudden despite that. Tapping his lip, he hums.]

Well . . . I have significant portions of Les Misérables memorized. I'm well-acquainted with the paradoxical principles of Il Principe. And I know a genuinely unreasonable number of taxonomical names that could be used as keys.

[But. That's not all. He fixes Trish with a look.]

Meanwhile, you act as though you don't have any resources. The amount of music you've got memorized . . . every song could be a key. I'd have to check with Fugo, but I'm pretty sure it's mathematically improbable for a single boy, even if he's a computer, to go through every single song in the catalogue of humanity and find the correct one before we rotate to a new cipher.