When the man arrived, the palpable but undefined tension relaxed somewhat. It was as if one of the problems which the woman’s presence represented had now been neutralized, although others perhaps remained. The newcomer was clearly not a local, even though his prominent, prow-like nose might have suggested some atavistic input from the Greek gene pool which still surfaced here from time to time, like the lava flows from the snow-covered volcano which dominated the city. But his accent, the pallor of his complexion, his stiff bearing and above all his height — a good head above everyone else in the room — clearly ruled him out as a Sicilian.

To look at, he and the woman might have been professional acquaintances or rivals meeting by chance over their morning coffee, but that hypothesis was abruptly dispelled by a gesture so quick and casual it could easily have passed unnoticed: the man reached over and turned down the label of the woman’s dress, which was sticking up at the nape of her neck.

‘A lei, Dottor Zen!’ the barman announced at a volume which might or might not have been intended to undercut the politeness of the phrase. With a triumphant yet nonchalant gesture, he set down a double espresso and a pastry stuffed with sultanas, pine nuts and almond paste. Zen took a sip of the scalding coffee, which jolted his head back briefly, then pulled over the copy of the newspaper which the woman had been reading, DEATH CHAMBER WAGON TRACED TO PALERMO, read the headline. Aurelio Zen tapped the paper three times with the index finger of his left hand.

‘So?’ he asked, catching his companion’s eyes.

The woman made a gesture with both hands, as though weighing a sack of some loose but heavy substance such as flour or salt.

‘Not here,’ she said.

And in fact the bar had suddenly become amazingly quiet, as though every single one of the adversarial conversations previously competing for territorial advantage had just happened to end at the same moment. Aurelio Zen turned to face the assembled customers, eyeing them in turn with an air which seemed to remind each of the company that he had urgent and pressing matters to discuss with his neighbours. Once the former hubbub was re-established, Zen turned back to start his breakfast.