It is one of the few times when a case wraps up so neatly.

[At your question, he taps a few buttons on his communicator, looking through the records they keep.] Not any recent activity from that individual, no. If you would like, I can send someone to check in on him?

[In answer to your other question, he simply shakes his head and reaches out for the light, letting his hand pass through it.] It has entirely different properties. I don't particularly understand, but...it would not be the first mystery I have encountered here.