Do You like book The Confederation Handbook (2002)?
An amazing guide to the Night's Dawn trilogy. This really highlights the background work Hamilton puts into his series. The greatest thing I got out of it was a new appreciation for the series and his greater works. As for the actual content, is very detailed workout going on & on & on, and, would make a fantastic companion to a re-read, or, for those reading for the first time, a valuable resource to turn to, should you need further understanding on certain aspects of the series. Something to note however, is that there is potential spoilers within, so I'd advise turning to the guide thoughtfully.
—Jim Kearnan