‘Which judge is handling the case?’ asked Zen.

‘A woman called Nunziatella. First name Corinna.’

‘Do you know her?’

‘We’ve met a few times, and she seems to like me, but obviously I try to keep out of her way. A humble technician like me is not supposed to interfere with the work of the judges any more than is strictly necessary.’

Zen smiled, then kissed the woman briefly on both cheeks.

‘Buon lavoro, Carla.’

‘You too, Dad.’

Zen walked down Via Umberto to the corner, then turned into Via Etnea, the town’s main street. As he crossed, he glanced as always at the snow-capped mass of Etna to the right, looming up over the city like a nightmare acne pimple. After that, it was a short and pleasant walk along a hushed back-street to the little piazza where the Questura was situated.

With a nod to the armed guard in his bullet-proof booth at the door, Zen entered the building and went upstairs to his office: a cool, spacious room on the second floor of the elegant eighteenth-century palazzo, formerly a bank, which now housed the Catania police headquarters. Floor-length windows gave on to a balcony commanding a view of the street below. The walls were adorned with photographs of Carla Arduini and Signora Zen, as well as a framed poster entitled Venezia forma urbis, a large collage of aerial photographs forming a precise and evocative map of Zen’s native city.

He had never bothered to personalize his temporary quarters like this before, and if he had now, it was because he had reluctantly accepted that these were not temporary. On the contrary, Zen had every reason to suppose that he would be stuck in Catania for the rest of his career.

The proposition which had been made to him in Rome by the famous film director known as Giulio, prior to Zen’s visit to Piedmont, had turned out to be as false as it was flattering. Zen had been privately advised that an elite corps was being put together to smash the Mafia once and for all, and that following Zen’s ‘anti-terrorist triumph’ in Naples he had been chosen to join this select group, despite the notorious inconveniences and risks, occasionally fatal, of a posting to Sicily.