It was late in the evening, and a thin winter rain beat down over London’s low buildings and high steeples, collecting in sallow pools beneath the streetlights and insinuating its way inside the clothes of the miserable few whom fate had kept outside. Inside Charles Lenox’s house, however, tucked on a short lane just off of Grosvenor Square, all was warm and merry. It was Christmas and only a few short days from 1867. There had been a long, hearty meal, a delicious pudding, and more than a few glasses of wine, and now just two people, the amateur detective and his older brother, Sir Edmund Lenox, sat up, sipping short glasses of a digestive anise and reminiscing about holidays past, as men of their age, just on either side of forty, often will at Christmas. Animated disagreements and frequent peals of laughter filled the long, narrow dining room, as a fire died behind them. Midnight had long passed, and Edmund’s wife and two sons were asleep upstairs. It was an hour since Lenox had walked his betrothed, Lady Jane Grey, back to her own house next door.

They looked alike, these two men. Both had brown hair, slightly curly, and handsome, kind faces. Edmund, who preferred rural to city life, possessed a haler and ruddier aspect, while Charles, who spent so much of his life pondering the enigmatic, seemed more thoughtful and more introspective. Since the death of their parents, the two brothers had spent their holidays at Lenox House, their family’s ancestral home in Sussex. This year, though, Edmund, who was the Liberal Member of Parliament for Market house, had been held in London by pressing political matters, and Charles had suggested they might alter their tradition and gather under his roof. He was especially happy that they did so because it was a kind of consecration of his very recent engagement to Jane, one of the oldest friends of both brothers. In all the happy hours since she had assented to his proposal, seeing her smiling face ranged among his family’s at the candlelit supper table was the happiest. As he sat with Edmund now his heart felt full, his life blessed. It was wonderful.