Provenance

Six million euros. One sentence nobody read.

Marit Oosterveld has never in her life said that a thing simply *is.* At Van Der Lelie & Compagnie, the old Amsterdam auction house on the Herengracht, she is the senior Old Masters specialist, and her catalogue entries are famous for one thing: they hedge every claim, down to the commas.

Then a charming collector brings her the jewel of the spring sale: Evening on the Amstel, painted in 1658, a quiet river scene with a lantern burning in the lower right-hand corner. Estimate, five to seven million euros. The owner, shipping heir Anton Marsman, is a patron of museums and a friend to everyone. The director, who has had a very bad year, is already ordering the glossy catalogue.

But the lantern in the 1931 photograph has six sides, and the lantern on the canvas has four. In that same corner, a laboratory finds a green that was not made until 1938.

Marit has anomalies, not proof. Accuse a man like Marsman without evidence and her career is over. So she does the only thing she knows how to do. She writes it all down, in the right order, exactly as she sees it. She asks the owner for his explanation, and records it in his own words. She never edits a word he signs. And at the very end of the lot essay, she adds one short sentence that her director begs her to cut.

Part art-world mystery, part courtroom chess game, and part love letter to the quiet power of accuracy, PROVENANCE moves from the canals and counting-rooms of Amsterdam to a dying copyist's studio in the Jordaan, and a crate that has waited ten years in a warehouse by the water.

For readers who like their suspense cool, their heroines precise, and their endings earned.