1765. Filipo di Vecellio of Florence, portrait painter, is the toast of London: rich, successful, and married to Angelica, known as the most beautiful woman in the city. Their Pall Mall home is the hub of the art world; their impressive social gatherings run so smoothly by Filipo's silent sister, Francesca. But beneath the surface, the house conceals a swarm of dangerous secrets. Where does Francesca di Vecellio go as the sun sets over Covent Garden? And why are there always candles lit in her attic, while no candles burn for her brother's exquisite wife?