That doesn't make any sense!! It's a powdery substance [DO YOU KNOW HOW HARD THOSE ARE TO CLEAN?!] on the upper corner of the box, it must've left traces somewhere! Unless the killer poured it over the box after they delivered it, but that doesn't make sense either!!
[Slows down and grabs at his head as the little workers in his brain are working overtime. None of this really makes sense, after all]
[That latter part of what you said does make sense, though. He's not particularly hopeful enough to expect it to be a specific or rare substance, as opposed to something innocuous and widespread such as sugar or salt. When he sees the door with tape, he lets go of his head and nods before he walks over to it]
But the more information we can get, the better! Our first step is to collect as much clues as we can, even if it seems irrelevant! Then we have to find a theory that both explains all the clues, and that can point us to the killer!
Re: [CUE TATORT MUSIC]
[Slows down and grabs at his head as the little workers in his brain are working overtime. None of this really makes sense, after all]
[That latter part of what you said does make sense, though. He's not particularly hopeful enough to expect it to be a specific or rare substance, as opposed to something innocuous and widespread such as sugar or salt. When he sees the door with tape, he lets go of his head and nods before he walks over to it]
But the more information we can get, the better! Our first step is to collect as much clues as we can, even if it seems irrelevant! Then we have to find a theory that both explains all the clues, and that can point us to the killer!