A glamorous perfume launch with death as the top note... a captivating case for Posie Parker!

Summer, 1925.

Posie Parker, Private Detective, has been summoned to Chelsea, to the House of Sinne, the London perfume house. Anouk Sinne, the most brilliant perfumier of her age, and famous for her spoiled bald cat, has been receiving blackmail demands, and she asks Posie to investigate. But is blackmail just the tip of the iceberg?

A 'reveal' party for the Anouk's highly-anticipated new fragrance is just about to take place, and Posie, together with her best friend Dolly, Countess Cardigeon, finds herself rubbing shoulders with some very famous people in the legendarily-secret flower garden, including Gordy Lorkinsson, the celebrity Icelandic gardener, and the French Duchesse, Maria de Poilac, together with her gorgeous son, Anatole.

But after the 'reveal' of the strangest perfume Posie has ever experienced, hosted by a mysterious Indian Princess, Priyanka of Gwilim, things take a chilling turn for the worse... Arguments break out between Hubert Pring, Anouk's long-time sponsor, and Archie Van Dusen, the American billionaire shop-owner, regarding who the new perfume really belongs to. But where is Anouk to settle the point?

When Anouk Sinne is found murdered, and the new perfume suddenly disappears, Posie must investigate, and quickly. And what she uncovers are secrets everywhere, and motives galore. Who was Anouk Sinne really? And when the killer ingeniously kills for a second time, Posie realises that nothing at the House of Sinne is quite what is seems. With the help of her husband Richard, Chief Commissioner of Scotland Yard, can Posie stop the killer before they strike again? And what is wrong with Dolly Cardigeon? Why is she behaving so strangely?

A twisty 1920s historical mystery which fans of Agatha Christie and Downton Abbey will adore.

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