This movie is a treat. There is great beauty in the three female portraits of da Vinci's, culminating in the Mona Lisa, the three portraits oddly completed 15 years apart. Why? And why, as we learn here, did the creator of the masterpieces Mona Lisa and earlier the Last Supper have so little to say in his copious diaries about painting, as if, we learn in this movie, da Vinci might simply have felt that painting was too easy for him to be worth writing about. By contrast, he has a world to tell us in his writings about physics, engineering, architecture, celestial bodies... Yet the world mostly knows da Vinci for the images of incomparable beauty he created. There really are mysteries here, some as yet unsolved, some revealed here. You'll enjoy watching this, if only to feel good about what marvelous things humans can do.
Obviously I agree with the lead reviewer that the rating is absurdly low. If you have the chance to see it you will enjoy this detective story.