The necessity of doing that kind of re-reading is one of the main problems I have with books in modern fantasy series. Many of them do not stand as independent works and long gone are the days of the standard trilogy format. Many of the most popular modern series do not seem to have an end in sight and in some cases I suspect that the authors are simply enjoying having a successful series and do not have a resolution in mind from the start.
Aside from that issue, this is one of the better modern fantasy works. Keyes does a good job of walking a fine line between realism and romanticism by keeping the characters and the background very likelike while still incorporating some fantastic plot twists and mythology.
I'm hoping he wraps up the series in the next installment to avoid over-extending it.
Amazon Links: The Charnel Prince