The lifeless body of the famous organist Johan Van Vliet is found at the foot of Judgment portal of Notre-Dame. His ears were pierced and his face set towards the statue of the angel who plays the trumpet to sound the alarm of the dead. Outstanding musician, Van Vliet was also an egocentric man known to be a womanizer ... In making the victim symbolically deaf to the call of the angel, the killer seems to have wanted to prevent the victim of divine mercy ... It is the first indication of an overwhelming case of revenge.
Mountaineer Bernard Lang was discovered broken in uniform suddenly climbing at the foot of the obelisk in the Place de la Concorde. Fascinated by the obelisk and its history, Jo knows that the monument is also a great vantage point of the surrounding area, including suites at the Hotel de Crillon. And one of them, that evening, a young woman of good family deceived her husband.
Charlotte, a Mirage pilot of thirty-five years, was found dead at the Hotel des Invalides. The victim was wearing a ring stolen a year earlier in the murder of a family in the south of France. Her lover, a mysterious mechanic, quickly suspected. Unearthing the elements of this crime forgotten, Jo maintains a conspiracy ...
During a parade of Fashion Week, a former model of thirty-eight years is precipitated from the Eiffel Tower. First wife of her lover is suspected, but Jo then a trail back to Jasmine, twenty-two years, showgirl in Pigalle and abandoned illegitimate daughter of supermodel ...
In a parking lot in the Place Vendome, firefighters emerge the charred body of Philip Roquin, accounting for a jewelery instead. His wife admits that he was kidnapped and that the kidnappers asked for a ransom. The investigation will lead Jo St. Clair in a prison where some Lisette was incarcerated.
A young gallerist, Marie-Eve Lambert, Place des Vosges lies, killed by a violent blow to the head. Believing at first to a crime of passion, Jo discovers in the hand of the victim leading a mysterious message at the National Archives, where Marie-Eve was researching resistant deported to Auschwitz.
Wednesday late afternoon. Leaving the Palais Garnier, where he had just dropped his daughter to her dance class, Raymond Sittler is assaulted on the steps of the Opera. A few seconds later, before convulsing, he collapses and dies on the porch ... A time suspected his mistress is murdered at Barbès-Rochechouart station poisoned. The investigation leads Jo to the prestigious Sorbonne University and to the door of a troubled student and his ambitious girlfriend.
A young geneticist was stabbed in the Catacombs. On his back is engraved a Satanist symbol. Jo is convinced that this is a crime of passion. But the case takes an unexpected turn when the team discovers that the victim was conducting experiments with plague bacteria recovered from the skeletons of the catacombs. The trail leads to a mysterious woman who could be a serial killer at large. It already seems to have chosen his next victim: the family of a politician first plan.
