An Instance of the Fingerpost

Who could possibly need to rob a poor monastery—whose only valuable treasure is a painting attributed to Caravaggio? Investigator Flavia di Stefano is surprised: the robbers didn’t steal that canvas, but a medieval image of the Madonna, for which it’s hardly possible to get big money—although local residents consider it miraculous.

A stupid mistake? Or, on the contrary, a carefully planned crime?
Flavia and the English art expert Jonathan Argyle begin their investigation. And the first thing they encounter is a mysterious murder…