In the Amazon basin, the widow of a protector of the rainforest receives a precious gift - the decapitated head of her husband's enemy . . .
In Australia, the CEO of a petroleum company which has just dumped thirty million gallons of crude oil into the Coral Sea is poisoned at a press conference . . .
In Tennessee, the railway engineer responsible for a toxic gas spillage which killed three hundred is himself buried alive in powdered ammonia . . .
The world is at risk and a team of merciless eco-vigilantes is extracting appropriate retribution from the planet's polluters.
As yet this extraordinary sequence of events has little bearing on the life of environmental journalist Tess Drake. But soon she is sucked into a dark and sinister conspiracy whose past lies in a religious heresy dating from the thirteenth century - and whose present is a labyrinth of mystery and murder that extends to the highest in the land . . .