Tourmaline is an isolated Western Australian mining town - a place of heat and dust, as allegorical as it is real.
Out of the desert staggers a young diviner, Michael Random, offering salvation to this parched town. The once comatose community is indeed stirred to life, by hate as much as by love, and its people find salvation in neither water nor gold.
The first message sent to Tom Thorne's phone was just a picture - the blurred image of a man's face, but Thorne had seen enough dead bodies to know that the man was no longer alive. But who was he? Who sent the photograph? And why? While the technical experts attempt to trace the sender, Thorne searches the bulletins for a reported death that matches the photograph. Then another picture arrives.