Queen of the Flowers (Phryne Fisher Series #14)

The circus is in town, and St. Kilda is having its first Flower Festival. After one of her flower maidens vanishes, Phryne investigates the underworld with the help of Bert, Cec, her little beretta, and an old flame from Orkney, the owner of the most exclusive brothel in St Kilda, and several elephants. Then her own adopted daughter Ruth goes missing.