[ since flat could rarely be described as "serious", it would be more apt to describe him as focused, once he's in the hotel. and even that description would be barely fitting, considering that what he's focused in doesn't seem to be anything important.

moriarty's butterflies, to be exact.

he's studying them the same way a child might stare at ants, and sometimes even letting them go when his servant isn't looking.

what is for certain, though, is that flat is only barely paying attention to moriarty, even when he asks such a serious question. ]

Mm, not really. Putting guards in this place would probably make other Magi suspicious. It's better to stay a--

[ his attention is cut in the middle of his sentence, and he snaps his head towards the window with a curious tilt. ]

....Something's happening, I think. In the desert.

[ the desert that is miles and miles away from where they are. ]