Ah, I see. I stepped out once or twice so it must have been then...

[Kaoru's hand briefly pulls away the kerchief blotting out the stench in the room; it's a habitual-looking, nervous sort of gesture.] I suppose that is what we need to focus on for now, then. Determining the potential window of opportunity, whether or not there were two culprits involved, and why the crime scene was set up in such a way. It seems as though the window has been discovered, at least - or a rough approximation thereof.