This book follows straight on from its predecessor, Darkland, so if you haven't read that, Bloodmind will not made a lot of sense to you.
It develops the concepts and story from Darkland, interweaving three separate strands from the 3 planets of Mondhile, Nhem and Muspell.
The main voice remains Vali Hallsdottir, though new characters from Mondheim and Nhem are also introduced. As the story develops, it becomes clearer what Frey and the vitki were planning.
As I said in my review for Darkland, it's an good adventure novel along the lines of Andre Norton, that mixes 'magic' with genetic modification and space opera. My only slight criticism is that the ending felt rushed, as if she wanted to tie-up all the threads without having to write another sequel.
Good stuff, I hope she does get round to writing another in this series