I read "Sun of Suns", also from Amazon, some time ago, and greatly enjoyed it. It was what I consider an entirely satisfying SF novel: a surprising and carefully worked-out setting, a gripping plot with plenty of interesting details, varied and vivid characters, and the odd surprise which never turns out to be a deux ex machina. There are several books in this series, though none appears to have been republished in Britain, and I put them all on my Wish List. This is the second. The spatial scale of the story is smaller this time: instead of travelling all over the vast hollow world of Virga, it is confined to one (albeit very large) settlement, and the action is ground-based instead of flying around on jet-propelled airships. This does not make it any less exciting or interesting, though. Without a fleet of airships at her command, Venera Fanning finds the strange societies of Spyre just as dangerous as an encounter with the sky pirates or enemy dreadnoughts of the first book--and with no companions, is dependent on her own wits to escape from various nasty situations and find her way home. That Karl Schroeder manages to help her do this without ever seeming to cheat shows how good he is at managing plot. Even the "secret weapon" Venera brings out at the end turns out to be something we were quite openly shown earlier...except that, at that time, we had no reason to think it had a military use. See if you can spot it in advance. This book falls short of greatness, and I would dock it half a star for a couple of short but unnecessarily explicit sex scenes, but nonetheless I strongly recommend it and look forward to buying the remaining books in the series when I have the money!