Read Chapter 33: The Cardinal's Cipher

The cardinal’s study smelled of wax and old vellum, a scent Claude had come to associate with secrets that burned too easily. He pressed his back against the oak door and listened. The palace corridors of the Hôtel de Bourgogne lay silent, save for the distant echo of a servant’s footsteps on the level below. The masquerade had ended hours ago; the cardinal, flushed with wine and victory, had retired to his chambers on the opposite wing.

Claude had watched him go. Had counted the guards. Had noted the moment the last candle in the cardinal’s window flickered out.

Now he stood in the heart of the spider’s web.

The study was modest for a man of the cardinal’s ambition—a writing desk, a prie-dieu, a shelf of theological texts. But Claude had learned long ago that powerful men hide their sins beneath humility. He moved to the desk first, his fingers tracing the edges of the leather-bound ledger. Locked. He slid his knife beneath the clasp and twisted. The wood groaned, then gave.

Inside, accounts. Payments to mercenaries, receipts for grain, names crossed out and rewritten. Nothing useful. He closed it and turned to the bookshelf.

The falconer in Compiègne had kept his secrets in a Bible, hollowed out like a corpse. The cardinal would be cleverer. Claude ran his hand along the spines, feeling for give. A book of hours. A commentary on Ecclesiastes. A collection of sermons by some long-dead bishop. Nothing.

He paused at the prie-dieu. The velvet cushion was worn at the knees—whether from genuine piety or performance, Claude couldn’t say. But the wood beneath was freshly polished, and one corner of the kneeling bench had a thin seam that did not match the grain.

He knelt. Not in prayer, but in theft. His fingers found the edge of the panel and pried it free.

A compartment. Inside, a leather satchel jammed with letters.

Claude pulled them out by the handful. Some bore seals he recognized—the double cross of the Church, the fleur-de-lis of the French crown. Others were unmarked, written in a cipher that had become maddeningly familiar over the past weeks. That word, *Purgare*, recurred at the top of nearly every page, circled and underlined.

He spread the first letter across the desk. His candle, shielded by his palm, threw dancing shadows across the cramped script. The cardinal’s hand was small and precise, the handwriting of a man who feared witnesses.

*The instrument of our purpose is prepared. Upon the signal, the flame will rise from the altar of Saint-Médard, and the Burgundian dogs will howl for French blood. Let them find their enemy among their own pews. When the smoke clears, we will have our war, and our peace.*

Claude read it three times. The words did not change.

Saint-Médard. A Burgundian church. He knew it—a modest parish on the edge of the city’s Burgundian quarter, where merchants from Dijon and Auxerre gathered to hear mass in their own tongue. The cardinal planned to burn it, to tuck the blame into the folds of French robes, and to let old hatreds do the rest.

Pogrom. The word had no official place in canon law, but it had a smell. Claude knew it from the stories his father had told about the riots in the south, how a single spark could turn a market square into a slaughterhouse.

He read the next letter. And the next.

The plot was layered like pastry: a fire in Saint-Médard, timed to coincide with the arrival of a Burgundian delegation for the negotiations at Arras. The deaths of the congregation—some rented, some purchased, but all innocent—would be painted as a French atrocity. In the chaos, the cardinal would step forward as the voice of reconciliation, the man who could quiet the storm he himself had unleashed. France and Burgundy would unite under his guidance, and the Dauphin would be a crowned puppet dancing on strings of red silk.

Étienne D’Argent had discovered this. That was why he was dead.

Claude’s hands trembled. He set the letters down carefully, as if they might combust from his anger alone.

He needed allies. The French provost would act against a plot that threatened his own people. The Burgundian ambassador would sound the alarm to his own court. But Claude had no proof of his identity here—he was a merchant’s assistant from Lyon, a name that would dissolve under scrutiny. And if the provost was the cardinal’s man, as so many in Paris seemed to be, a warning would only reveal his position.

The clock. He had no idea when the fire would come. The letter mentioned a signal, but not its form. A bell? A courier? A candle in the window of some distant tower?

He stuffed the letters back into the satchel, then hesitated. The satchel was too bulky to conceal beneath his merchant’s doublet. He could take only what mattered most: the letter naming Saint-Médard, and the schedule Marguerite had given him in the catacombs. He folded both into a slim packet and slid it into his boot, against the bone of his ankle.

He was about to close the compartment when his fingers brushed something cold. Metal. He drew it out: a silver key, its bow shaped like a flame.

He stared at it. The fireplace—he hadn’t checked the fireplace. The cardinal was clever enough to maintain a false study for the curious and greedy, but a man of true ambition kept his greatest secrets where he could burn them in an instant.

Claude crossed the room and knelt before the hearth. Cold ash, swept clean. He pressed the key into a small lock he hadn’t noticed near the mantel’s base. A click. A drawer slid open from beneath the hearthstone.

Inside, a single ledger with a leather cover stained black.

He opened it. The entries were dated, each page headed with the name of a town. Compiègne. Reims. Orléans. And beneath each, a list: names, dates, payments. The cardinal’s entire network, from forgers to falconers, from provosts to priests.

And at the bottom of the Paris pages, an entry he nearly missed.

*M. D’Argent. Choir of Notre-Dame. Voice: sweet. Value: diminishing. Disposition: mirror of her dead father—useful mirror, but mirrors reflect the truth, and truth is dangerous. Recommend removal upon completion of Purgare.*

Claude’s stomach turned. The cardinal wasn’t just aware of Marguerite’s pursuit. He was documenting it, studying it, planning to end it.

And the fire—the purge—would be the moment she became expendable.

He closed the ledger and shoved it into his doublet, feeling the weight of it press against his ribs. The silver key went back into the drawer. He was sealing the hearthstone back into place when a sound rose from below—footsteps, deliberate and unhurried. More than one set. The tread of men who were not trying to be quiet.

Claude pressed himself against the wall beside the door. The footsteps grew. Stopped.

The handle turned.

He was out of time. But not for the reasons he had thought. The cardinal hadn’t set a burglar’s trap. He had set a mirror of his own—and in its reflection, Claude finally saw the truth.

His sister wasn’t walking into a trap.

She *was* the trap.