Mataura is a small town in rural New Zealand where, apart from the odd tractor theft, nothing very interesting happens. But when the body of a young mother is found washed up on the banks of the Mataura River, the small rural community is rocked by her tragic suicide. All is not what it seems, however.
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.