Antoine Verlaque, examining magistrate for the beautiful town of Aix-en-Provence, doesn't like Christmas. The decorations appear in the shops far too early, festive tourists swarm the streets, and his beloved Cours Mirabeau is lined with chalets selling what he regards as tacky trinkets. But his wife and partner Marine Bonnet is determined to make this a Christmas they can both enjoy, beginning with the carol sing at the Cathedral Saint Sauveur, a beautiful service in a packed church. Just as the holiday cheer is in full swing, a man is poisoned, sending the community into a tailspin. The list of suspects, Verlaque and Bonnet quickly discover, almost fills the church itself, from the visiting vendors at the Christmas fair to the victim’s unhappy wife and his disgruntled business partner. In , with the help of an ever-watchful young woman named France, the pair must solve the murder while the spirit of the season attempts to warm Verlaque’s stubborn heart.