It was Christmas Eve. In the vast adjoining room Tamás Ulpius’s father walked back and forth alone. Elbows on the table, they studied the plates, whose gold backgrounds glittered up at them like a mysterious fountain of light at the bottom of a mineshaft. Within the Byzantine pictures there was something that stirred a sleeping horror in the depth of their souls. At a quarter to twelve they put on their overcoats and, with ice in their hearts, set off for midnight mass. Then Éva fainted, the only time her nerves ever troubled her. For a month afterwards it was all Ravenna, and for Mihály Ravenna had remained to that day an indefinable species of dread.

That profoundly submerged episode now re-surfaced in its entirety, as he stood there in the cathedral of San Vitale before the miraculous pale-green mosaic. His youth beat within him with such intensity that he suddenly grew faint and had to lean against a pillar. But it lasted only a second, and he was a serious man again.

The other mosaics held no further interest for him. He went back to the hotel, waited for Erzsi to make herself ready, then together they systematically visited and discussed all there was to see. Mihály did not of course mention that he had already been to San Vitale. He slipped rather ashamedly into the cathedral, as if something might betray his secret, and pronounced the place of little interest, to atone for the morning’s painful disclosure.

The next evening they were sitting in the little piazza outside a café. Erzsi was eating an ice-cream, Mihály trying some bitter beverage previously unknown to him but not very satisfying, and wondering how to get rid of the taste.

“This stench is awful,” said Erzsi. “Wherever you go in this town there is always this smell. This is how I imagine a gas attack.”

“It shouldn’t surprise you,” he replied. “The place smells like a corpse. Ravenna’s a decadent city. It’s been decaying for over a thousand years. Even Baedeker says so. There were three golden ages, the last in the eighth century AD.”

“Come off it, you clown,” said Erzsi with a smile. “You’re always thinking about corpses and the smell of death. This particular stench comes from life and the living. It’s the smell of artificial fertiliser. The whole of Ravenna lives off the factory.”

“Ravenna lives off artificial fertiliser? This city, where Theodoric the Great and Dante lie buried? This city, besides which Venice is a parvenu?”

“That’s right, my dear.”

“That’s appalling.”

In that instant the roar of a motorbike exploded into the square and its rider, clad in leathers and goggles, leapt down, as from horseback. He looked around, spotted the couple and made straight for their table, leading the bike beside him like a steed. Reaching the table he pushed up his visor-goggles and said,“Hello, Mihály, I was looking for you.”

Mihály to his astonishment recognised János Szepetneki. In his amazement all he could say was, “How did you know I was here?”

“They told me at your hotel in Venice that you had moved on to Ravenna. And where might a man be in Ravenna after dinner but in the piazza? It really wasn’t difficult. I’ve come here straight from Venice. But now I’ll sit down for a bit.”

“Er … let me introduce you to my wife,” said Mihály nervously.