Imagine you have a painting, a Madonna and Child that has been in your family for years. It is beautiful, serene and spellbinding. For a long time you take it for granted, but your curiosity gradually grows, and you call in the experts. They get excited. What if that old family painting was thought to be by a pupil of Leonardo da Vinci - or even the master himself? You start researching, communicating with academics and institutions worldwide. The results are astounding. What would you do if that painting pointed to one of the greatest heresies of our time? And what if it revealed an incredible story that the Catholic Church has been desperate to keep secret for centuries? Da Vinci's Last Commission is one of the most astonishing detective stories in the history of art, as well as a tale of the courage and tenacity of a woman who challenged the art establishment, orthodox history and the Church in her quest for the truth.