My husband called me a whale, kissed his mistress in public, and told me to “dust the library.” Then he strutted into New York’s most exclusive Diamond Gala thinking he was untouchable.

He did not know that every dollar he had spent in the previous five years on tailored suits, investor dinners, fake expansions, private drivers, hotel suites, gifts for a mistress, and the steady architecture of his ego had come from one source.

He did not know that the source had finally decided the account was closed.

Forty miles away in Greenwich, Connecticut, his wife stood in front of a locked room at the far end of the second-floor hallway of the house Preston called his. He referred to it casually as the storage closet whenever guests wandered too close, which amused her now in a way it never had before. The door was steel-cored beneath its painted wood. The lock was digital. Behind it, in the dark glow of three monitors, was not storage but the machinery of truth.

Vivien Carter entered the room barefoot, one hand supporting the weight of her seven-month pregnant belly, the other carrying a glass of ice water she had forgotten to drink.