Out of the first four books in this series, this one has been the best, but it's not without flaws. Kathleen Ryan's English is a pleasure to read, unlike the previous books' authors', but her style leaves a little to be desired. 1) From time to time, I felt like dialogues were showing only half of a conversation happening because I couldn't make sense what characters were talking about. 2) Characters' actions sometimes felt like they make no sense because again, it was hard to follow the logic of what they are doing. 3) There were so many characters in this book, referred to by their first names, last names, titles, nicknames, that it was hard to discern sometimes who's who. 4) I felt like the main hook of the story went unresolved - sure, Ankhesenaten recovers the McGuffin... and the books ends there without revealing what was to be done with it or what would happen next to Khay'tall and Sarrasine.
This novel offered an interesting insight into collaboration between vampires of different clans. Ankhesenaten makes for a fun vampire "prince" of the caravan: no city to call his own, but still holding a lot of power and reputation in a way. The caravan's meetings with the different princes along its itinerary also offered a glimpse into vampire politics.
Overall, this book gave me what the previous three failed to do and that's why I liked it much more.