‘Gesù Bambino,’ Brunetti whispered; then, remembering what Vianello had told him, asked, ‘The magazines?’

‘That’s just a part of it,’ Vianello answered, his distress audible. He put his right hand inside the open collar of his shirt and ran his hand up his neck. ‘God, I hate this heat. There’s no way to get away from it.’

Brunetti avoided the distraction and took another sip of his water. He and Vianello had interrogated so many witnesses and suspects together that there was no tactic they had not been exposed to. He sat back with his arms folded, the very model of patience.

Vianello leaned back, as well. ‘I told you that’s how it started: reading the horoscopes. And the radio programme in the morning, and then she discovered those private channels where they have the people who read the cards.’ He made a fist with his right hand and banged it on the table, but lightly to show it was a gesture and not an act of rage.

‘One of her friends told her about the programmes, how much help they were to the people who called.’

‘What does your aunt need help with?’ Brunetti could not stop himself from asking. From the way Vianello had spoken of her over the years, she had always sounded like the pillar of strength and certainty in the family.

Something flashed across Vianello’s face, something Brunetti had never seen, at least never seen directed at him. ‘I’m coming to that, Guido,’ he said. Vianello must have been startled by his own voice because he opened his fist and spread his arm along the top of the bench, as if offering his open hand as an apology.