Same book - different cover - either the author or the publisher trying to con people. The 'Afterword' starts that Blackstone's destiny is revealed in Master of War published 01 Aug 13. Rip off by David Gilman would be more accurate.
Very short, good, but little more than a cash generator for the author/publisher - certainly not worth the money. It seems the author's priorities are now similar to the least likeable of her Roman characters.