the moon, and velvet tapestries like the raiment of Apollo. High above, painted on the ceiling, were cherubs and bearded patriarchs, half of them looking like Archimedes. It was all quite grand and meaningless; I recognized no particular Christian story. My eye was about to skip on when I noticed the central oval in the design, highlighted by a small ocular window that let in a cone of light.
Cherubs floated there, four baby heads looking down on three more full-bodied angels. The trio looked as uncorrupted as little Harry, their naked bodies strategically draped with red ribbon. I’d seen the same in a hundred churches, and would have paid no more attention except for what they were holding. There was a sun in this painting, beaming down with yellow rays, and it was being caught by what looked to be a hand mirror or magnifying glass.
A mirror, radiating its own rays.
I remembered the ring Fouche had shown us, with a second dome on the inside and the letter “A.”
A white-bearded notable of some sort was pointing with a staff toward a wall, or was he pointing beyond it? I looked down. On the rococo marble masterworks that made up the walls, I suddenly realized, was a most peculiar inlaid piece of art. A dagger was crossed with a palm leaf, represented by different shades of stone. Above was what looked to be a chalice, but a chalice with two eyes of the Greek kind—the solemn almond-type they painted on their ships—looking across in the same direction. Looking at what? I saw nothing in this chapel to hide a mirror. But then I remembered the chapel next door, where the old man was pointing. I walked to it. Unlike the first alcove, this one had a dome like an upside-down saucer, painted not with cherubs but adult angels smoky from centuries of soot. A dome like any other, except it had the diameter and depth of a parabola reminiscent of the shape Cuvier had guessed Archimedes’ mirror might take. I looked up. A dome to hide a fearsome weapon? Could it be?
I beckoned to Aurora. “Imagine,” I whispered, “if the Templars built the mirror into the ceiling, to hide it until the time was right for retrieval.”
“The ceiling?”
“Encased up there, bowl-side down. Look again at the signet ring.”
I showed her the cherubs and staff and eyes. Her face brightened as she paced rapidly from the one chapel to the other, and then back again. “Ethan, I think you have it!” she hissed.
“Too bad the Templars were clever enough to hide it in a place from which it could never really be taken. Built right into the skin of a sacred church, in the middle of Syracuse. Hidden in plain sight. They must have done it after an earthquake, when the duomo was being repaired. They put the entire power of the Church to work protecting their discovery, Aurora. Quite brilliant, really. Impossible to steal.”
“Sandwiched in a false ceiling,” she murmured.
“Yes. Well, we’ve done our best. It’s too bad, I’m sure the weapon is all very interesting, but the knights have always been a step ahead, haven’t they? Since it’s safely sealed away, can Harry and I go free now?”
“Young Horus?” She smiled. “But he’s going to help get this for us!”
“The other. Hurry!”
The pirate snapped that latch free, too, and this time there was a spiral staircase going upward.
Aurora reached for Harry but he shrank against my leg. Frowning, she then beckoned to me. I hesitated, hoping we might be discovered and rescued by a mob of angry monks, but we’d deliberately chosen a time in the somnolent afternoon when no masses were scheduled. I picked up my son and quickly crossed to the broken door and the stone stairs.
“Where we go, Papa?”
“Up. I’ll hold you.”
He thrashed his way down out of my arms. “No. Walk!” And he led us all, happy as a monkey. Just behind him, the votive candles that Dragut, Aurora, and Osiris had snatched threw a wavering light.
We came to a crude attic above the chapels. We were at the edge of the adjacent dome, with room only to crouch where a roof eave came down. It was a cat’s cradle of old beams and buttresses, dusty, cobwebbed, and spooky. I wondered again how long before a priest or prelate discovered our trespass and roused all of Syracuse against us. It was creepy enough that Harry lifted his arms to be held again.
“I knew we’d need your whelp,” Aurora said, peering into the dark crevice between interior dome and exterior roof. “Give me the boy.”
“Certainly not.”
“Hurry, or do you want to spend all day up here, waiting for a prelate to discover that broken door?” She pried my son from my grasp and set him on the floor, taking out a stick of sugar. “Now, Horus, do you like candy?”
He nodded solemnly.
“I think you should have some, but there’s something clever I want you to do to earn it. Only
“He’ll cut himself!”
“Not if the urchin does what he’s told.” Her voice gentled to speak to the child. “Only big boys are allowed to handle knives, but I think you’re very big for your age. I want you to carefully crawl up this little slope on top of the ceiling here, and when you can go no farther, then rub this knife on whatever is blocking you.”
“Dark!” my child said, perfectly reasonably. He was as confused as I was.
“You won’t have to squeeze far, and I’ll hold the candle to light your way. It will only take a moment.”
“Aurora, are you insane?”
“Think, Ethan. If the mirror is hidden in the dome, it must be sandwiched between ceiling and roof. But before I start taking this cathedral apart I want to make sure it’s actually there, and I can’t squeeze into the sandwich to see. Horus can. It’s not unreasonable for your bastard to be useful for once.”
“What if he gets stuck?”
“Then we’ll jam you in there to pull him out. Stop complaining and help me!”
I sighed and squatted. “Harry, this edge is sharp.” I showed him the knife. “You have to be careful. Hold it like this.” I formed his fingers around the handle. “Rub the blade against whatever stops you and then crawl backward to Papa. Can you be brave?”
“Will I get candy?”
“Yes.”
“Will dog bite me?”
I sighed. “No.”
He smiled, rather excited by the importance of his task. He took the knife, held it ahead like a probe, and wriggled up the narrow space between the ceiling of the dome and the rafters of its tile roof overhead. I could still see the soles of his shoes when he called, “It stops!”
“What can you see?”
“Dark.” It was almost a whimper.
“Rub the blade and come back for your candy!” Aurora called.
Nothing happened, and she swore.
“It has to be there,” Osiris said, with more hope than proof.
“We have to be sure.”
“Eyes!” It was a yelp and Harry’s little feet kicked. I roared and reached in to grab his ankles but Dragut gripped me and then there was an animal squeak and my boy was still again.
“Harry?”
“Remember, rub the blade on the dark part for your candy!” Aurora called.
After a moment’s hesitation we heard a raspy scraping and then he was wriggling backward. Dragut let go of me and I caught his ankles and helped pull him out.
Harry held up the knife proudly. Its edge gleamed yellow, with scratched flakes of bronze or gold.