A recorder arpeggio—some fragment of a minuet—leaked out of the doors for a moment as servants pulled them open. Pontchartrain stepped out, looked up, and blinked at the falling snow, then pirouetted towards his hostess, who had fallen behind, and was shooing him forward in violation of all rules of precedence. An aurora of red silk bloomed around her as she drew out a scarf and allowed it to settle atop her wig. With fingers slowed by cold, fat, and arthritis, she knotted it under a chin, then accepted Pontchartrain’s proffered arm and stepped out into the frozen garden with more gingerness than was really warranted. The gravel paths near the château had been swept clear of snow; the sleigh was stopped a stone’s throw away, on a track that wandered off into the Duke’s hunting-park. Party-goers surged to the door and the fogged windows to bid the Duchess farewell, as if she were sailing to Surinam, and not just going on a quarter of an hour’s sleigh-ride on her own property.