On the planet Monde D'Isle a rugged human-descended people live in union with their world. They migrate with the tides of the moon, sense the meridians of the planet and slip into a Dreamtime that grants them access to - and escape from - the darker urges of their animal nature. But Mevennen is out of tune with her people's bloodmind and fears for her life during the time of the hunt, when her people seek out the weakest as their prey. And she seems haunted by a ghost.

Now an expedition has arrived on Monde D'Isle, charged with bringing utopia to this lost colony. The "ghost" is anthropologist Shu Idaan Gho and she promises to heal Mevennen - but it is a promise that comes with a price the whole world must pay. And why should the world want to?

The Ghost Sister was first published in the US in 2001 to immediate acclaim: it was a New York Times Notable Book of 2001, it was nominated for the Philip K. Dick and the Spectrum Awards (Best Novel), and in the UK it was on the shortlist for BSFA best novel.