Ghosting is also the first book in a shared universe that I plan to build. My own little 616, if you will. After I’m done with the 4th book in my The Passage of Hellsfire series, Eternal Darkness, I plan to write another book in the same universe. Maybe one day I’ll bring it all together like The Avengers movie, but it’s going to take some time. Think of it more like George RR Martin’s forgotten series, Wild Cards, or the way all of Stephen King’s works have a connection to his The Dark Tower.