Keltham is currently confused about whether the security guard and Carissa already know each other; that seems more like an intimate cofounder-cofounder interaction, or two Keepers on the same level of organizational lattice, than a security officer talking to an unfamiliar non-security officer. He decides not to point this out, in case it's symptomatic of, like, their being part of a set of playactors who all know each other and aren't good at pretending to be strangers...
His hypotheses on how the people around him could be trying to deceive him, keep foundering on all the ways they'd have to be simultaneously good at it and also bad at it in order to explain the details of his observations.
Still, Keltham doesn't neglect to note that the whole thing rings slightly false, and more like they had reasons for worrying about him acquiring the info that his god was Lawful Neutral, though what to make of that, he has no idea. "Evocation or Illusion next?" Keltham says.