This subject is for any odd or unusual situation or mystery you want to know more about or have explained. Even if the mystery is something that Jim might never take the time to fully answer.
I was looking at the thread about the possible origins of the Red and White Courts of Vampires, and I started wondering about something Nicodemus said about the Red Court back in Small Favor. Nic offered to help Harry wipe out the Red Court. Specifically, Nic said of the Red Court, "They're large, well organized, dangerous to my plans, a plague upon mankind, and aesthetically repugnant. They're parasites who are inconvenient in the short term, dangerous in the middle distance, and fatal to any long-range plan. They need to be destroyed at some point, in any case."
Of course, there is no way to know why the Red Court were a threat to Nics plans until we find out exactly what those plans actually involve. So far, I've haven't seen anyone make any detailed speculation on what Nic's long-term plan is. I think there has been some talk about Nic; and by extension Anduriel, wanting to defeat the Outsiders, but do so in a way that probably wipes out most of humanity. I could see the Red Court; if they were still around, not being very happy to see most of their food source disappear, but if Nic's plan involves the use of the Holly Grail or other items that were in Hades vault, I don't understand how the Red Court could get in Nic's way.
This isn't an huge issue or mystery like who fixed Little Chicago or who was responsible for Malcolm Dresden's death, but I don't want to see it get glossed over when Nic's plan or plans come into full view.
What odd or minor issue or mystery do you want to see explained?