human
Did you see this, Mr. Hall? Looks like a burn that might have been made by a fuse, does it not?
gpt
Yes, Professor, it does, but one of the peculiarities about this kind of thing is that it destroys its own evidence pretty much. If we don't know where the lighted fuse originated and where it led, it doesn't do us much good, does it?
human
That's right, but this obviously comes from an upper room, doesn't it?
gpt
Yes, I believe it does. But the upper rooms are gone, you see.
human
And you really think, do you Mr. Hall, that there was a timing device? It seems plausible to you that men who are engaged in such desperate business would leave such a thing to the mere chance of finding their victim home at the time their device was set to go off?
gpt
Well, perhaps not, Professor, but what else is there?
human
Nothing, yet, Mr. Hall, but let us look about.