Hey peoples, I've been lurking for a bit, but I think I'm ready to jump back in.
The word brachursis definitely stood out to me as well. Reminds me of the passwords for some reason, and googling it brings up nothing. I tried it as a password, but it didn't lead anywhere.
Something interesting to me - Cagliostro mentions that his guests are "highest members of the
cultural elite"... Looks like the guy has properties in NYC, London, and Turin, so he's clearly well-to-do, as well. So this has to be more than a simple magic show, right? Maybe real magic...?
Looks like the sent folder gives us the full name of "l" - Lauren Ellsworth.