A new exciting case of Amory Ames and her faithful “Doctor Watson” - husband Milo. Spring Paris in 1933 - what could be more beautiful? However, Amory and Milo Ames are not brought to the “city of love” by romantic circumstances. The thing is that the famous Parisian perfumer Elios Bélanger was killed right on the eve of the release of new perfumes, which were destined to become the sensation of the season!..But who dealt with Bélanger? One of his many competitors? Or one of the zealous heirs who have long dreamed of taking over his perfume empire? Amory and Milo must find the killer before he evaporates like one of those fine Parisian scents...