What has happened to Jacques Gaillard? The brilliant teacher who trained some of France's best and brightest at the Ecole Nationale d'Administration as future Prime Ministers and Presidents vanished ten years ago, presumably from Paris. Talk about your cold case. The mystery inspires a bet, one that Enzo Macleod, a biologist teaching in Toulouse instead of pursuing a brilliant career in forensics back home in Scotland can ill afford to lose. The wager is that Enzo can find out what happened to Jacques Gaillard by applying new science to an old case. Enzo comes to Paris to meet journalist Roger Raffin, the author of a book on seven celebrated unsolved murders, the assumption being that Gaillard is dead. He needs Raffin's notes. And armed with these, he begins his quest. It quickly has him touring landmarks such as the Paris catacombs and a chateau in Champagne, digging up relics and bones. Yes, Enzo finds Jacques Gaillard's head. The artifacts buried with the skull set him to interpreting the clues they provide and to following in someone's footsteps-maybe more than one someone-after the rest of Gaillard. And to reviewing some ancient and recent history. As with a quest, it's as much discovery as detection. Enzo proves to be an ace investigator, scientific and intuitive, and, for all his missteps, one who hits his goals including a painful journey toward greater self-awareness

In a sleepy French village, the body of a man shot through the head is disinterred by the roots of a fallen tree. A week later a famous art critic is viciously murdered in a nearby house. The deaths occurred more than seventy years apart. Asked by a colleague to inspect the site of the former, forensics expert Enzo Macleod quickly finds himself embroiled in the investigation of the latter. Two extraordinary narratives are set in train — one historical, unfolding in the treacherous wartime years of Occupied France; the other contemporary, set in the autumn of 2020 as France re-enters Covid lockdown. And Enzo’s investigations reveal an unexpected link between the murders — the Mona Lisa. Tasked by the exiled General Charles de Gaulle to keep the world’s most famous painting out of Nazi hands after the fall of France in 1940, 28-year-old Georgette Pignal finds herself swept along by the tide of history. Following in the wake of Da Vinci’s Mona Lisa as it is moved from château to château by the Louvre, she finds herself just one step ahead of two German art experts sent to steal it for rival patrons — Hitler and Göring. What none of them know is that the Louvre itself has taken exceptional measures to keep the painting safe, unwittingly setting in train a fatal sequence of events extending over seven decades. Events that have led to both killings. The Night Gate spans three generations, taking us from war-torn London, the Outer Hebrides of Scotland, Berlin and Vichy France, to the deadly enemy facing the world in 2020. In his latest novel, Peter May shows why he is one of the great contemporary writers of crime fiction