A hint of amusement in his voice, the man said dryly, “Tell them what? That someone lifted a grate and looked at the Roman paving? Hélas! All the gendarmes of France will be on the case.”

Ned might have grown up in too quick-witted a household, in some ways. “No,” he said, “we could say someone threatened us with a knife.”

The man turned around, inside the opening in the floor.

He was clean-shaven, lean-faced. Dark, strong eyebrows, a long, straight nose, a thin mouth. The bald head made his cheekbones show prominently. Ned saw a scar on one cheek, curving behind his ear.

The man looked at them both a moment, where they stood together at the top of the three steps, before he spoke again. His eyes were deep-set; it was impossible to see their colour.

“A few gendarmes would be interested in that, I grant you.” He shook his head. “But I am leaving. I see no reason to kill you. I will replace the grate. No damage has been done. To anything. Go away.” And then, as they still stood there, more in shock than anything else, he took the knife and put it out of sight.

Ned swallowed.

“Come on!” whispered the girl named Kate. She pulled at his arm. He turned with her to go. Then looked back.

“Were you trying to rob something down there?” he asked.

His mother would have turned and asked the same thing, in fact, out of sheer stubbornness, a refusal to be dismissed, though Ned didn’t actually know that.

The man in the baptistry looked up at him again and said, softly, after a moment, “No. Not that. I thought I was…here soon enough. I was wrong. I think the world will end before I ever find him in time. Or the sky will fall, as he would say.”

Ned shook his head, the way a dog does, shaking water off when it comes in out of the rain. The words made so little sense it wasn’t even funny. Kate was tugging at him again, harder this time.