'There are ten or fifteen plaes in California where the faults in the earth's crust are under such tremendous pressure that it would only take a little nudge...' The brightly painted vehicle grinds down through the gears, yawing and bumping along the highway. To a casual observer, it is a crazy fairground ride, but two men have already died tobring it to the chosen spot. if it does its job now, countles others face destruction... 'One of the great bestselling novelists' Sunday Telegraph