[Consider himself distracted.] Eh? Um, I'm pretty sure I was trying to decide what to cook for dinner toni--that night.

[But it was only for a moment as his eyes wander about the room.] I noticed a few things around the house, additional materials I'm certain weren't there before. [He eyes the burn mark and then the box of glass beakers nearby.]

What were you trying to do, Holmes-san? [He asked expectantly, though his tone lacked any indication he was trying to chastise him. In fact, he seem more curious. Whatever Holmes did has been done and no amount of fretting is going to change the past. So he may as well ask what he was doing in his endeavor, for curiosity sake. And then fret about that.]