The new complicated case of Verlac and Bonnet is the case of the mysterious murder of Pauline d'Arras, the wife of one of the richest and noblest people in Provence, whose body was discovered in a vineyard owned by the famous winemaker Olivier Bonnard. It is interesting that this crime was preceded by two strange Incidents: the theft of several bottles of rare wines from Bonnard's cellars and a seemingly unmotivated nervous breakdown of Madame d'Arras, who sobbed and wandered through the streets of the town in home clothes. Coincidences? Verlac and Bonnet are sure: such coincidences do not happen and these events are somehow connected with the murder. But how?..