April 2003 - as the Baghdad Museum of Antiquities is looted, a teenage Iraqi boy finds an ancient clay tablet in a long-forgotten vault. He takes it and runs off into the night... Several years later, at a peace rally in Jerusalem, the Israeli prime minister is about to sign a historic deal with the Palestinians. A man approaches from the crowd and seems to reach for a gun - bodyguards shoot him dead. But in his hand was a note, one he wanted to hand to the prime minister. The shooting sparks a series of tit-for-tat killings which could derail the peace accord. Washington sends for trouble-shooter and peace negotiator Maggie Costello, after she thought she had quit the job for good. She follows a trail that takes her from Jewish settlements on the West Bank to Palestinian refugee camps, where she discovers the latest deaths are not random but have a distinct pattern.