Reader's choice: The Chicago Underworld Affair

[hypatia-66.livejournal.com]

by Chajka. Another story that uses some of the characters from The Concrete Overcoat Affair, and includes a ghost who saves Napoleon's life. 

BTW, it's quite long.

https://web.archive.org/web/20070405031140/http://file40.net/file40g/chic_under.html