Whe I saw that there was a fourth Botany book available I was dubious - the Eosi had been defeated, Kris and Zainal were happy with their children, Botany had medics, electricity and space shuttles - what more could there be to say!?
Well it turned out that there was plenty to say, and this book continues the tale of the residents of Botany as they continue to build their world - no longer as captives, but as a free planet, realising that they are actually in a better position that Earth itself, which has suffered from the years of Catteni domination and destruction.
This book follows Kris, Zainal and all the characters from the previous books as they return to Barevi to bargain for the goods that Earth desperately needs, that have been looted by the Catteni - goods that are useless to the Catteni, but vital to the revival of Earth.
There's a lot more in this book too, new characters and interesting twists to the existing ones, but I wouldn't want to spoil things for you by telling all the secrets!
I have to admit to being a bit of a McCaffrey fan, and, having read the first three books I was always going to read this one! However, this is a really good continuance of the story, it brings in new themes and situations and is anything but a retelling of what has gone before.
I would heartily recommend this book if you have enjoyed the previous three in the series, if you haven't read any of them yet I would say read them in order - this is definitly a story that builds on what has gone before!