Acclaimed science fiction author Brian Stableford (Year Zero, Designer Genes) returns with the final book in his trilogy about a planet that contains thousands of worlds inside it - and the one man who will do anything to penetrate its secrets. The conflict between the Isthomi and Scarid races and the surface dwellers of Asgard had come to a halt, but not an end. Forces are at work on all sides to attempt to gain the upper hand in the struggle to control Asgard, for control of Asgard's heart could mean total power over the planet itself, and all who live in it. At the middle of the struggle is Michael Rousseau, who must penetrate the very core of the planet itself - both in reality and in another dimension altogether - to save Asgard and all who dwell in it, before it's too late.