France, 1961. Pinpoint - codename for assassinations of top-level ministers. France is being torn apart by a bitter internal struggle between De Gaulle and the Colnels. Car bombings and shootings are the stock in trade of both sides. No one trusts anyone else; those appointed to protect De Gaulle kill each other as often as the enemy. There is one man, codenamed Diderot, whose loyalty is above suspicion, a man so deep in the enemy's organisation that he has bloodied his hands in their cause. Now all the security forces in France want his head, even his one-time friends, for Diderot has a partner who has gone rogue, who has acquired an insatiable appetite for killing...Diderot can only turn to one man to help him: an Englishman named Harry Metcalfe. They vow to stop the killer, not knowing that their hunt will take thirty years, when, irony upon irony, their target will be President-elect of France.