In her Paris studio, an art teacher and great admirer of Paul Cézanne is murdered just as her husband, a painter, calls her from Aix-en-Provence, believing he has finally found the right vantage point to paint Mont Sainte-Victoire, following in the footsteps of his master. Captain Antoine Verlay and historian Florence Chassagne quickly make the connection between this unusual murder and the work of the famous Provençal artist. Realising during the investigation that one of the keys to the mystery lies in Aix-en-Provence, the duo decide to go there to investigate...