A beautiful woman in her forties is found dead at the back of a jazz club, where she had been singing for the last few weeks. The club manager only knows her stage name: Julie Garland. A magnificent voice and incredible talent who apparently had no career ambition at all. The only thing that seemed to matter to her was her pianist, a young genius with wild ways who has gone missing since the singer's death. In their search to find the victim's true identity, Chloe and Rocher discover that "Julie Garland" had been singing all over France for the last ten years, always gigs in small venues, and never more than a month in the same city. She had been accompanied on the piano by her shady young genius for the past two years. Could it have been a fusional relationship that ended in murder? What sort of danger could have forced this woman with such a pure voice to run away and wander about for so long?