Re: Sherlock H/Cris M
Fascinating. I have been employing hydrogen peroxide, to some success, though it has a number of false positives. Unfortunately, so would your luminol, as in these alleys blood is almost as common as fog. I must test it, however... yes. Thank you for the recommendation.
Oh yes.
[Nonplussed.] Comics, of course. You have my direction, it seems.