Agathe Natanson

A murder in Paris’ Louvre Museum and cryptic clues in some of Leonardo da Vinci’s most famous paintings lead to the discovery of a religious mystery. For 2,000 years a secret society closely guards information that — should it come to light — could rock the very foundations of Christianity.

In Tuscany to promote his latest book, a middle-aged English writer meets a French woman who leads him to the village of Lucignano.