way to Via Garibaldi.’

Brunetti sent his memory down one side of Via Garibaldi, up the other. ‘Banco di Padova?’

‘Yes. Next to the pharmacy.’

‘Did he say how long he can keep her there?’

‘Ten minutes. He said he’ll ask how the family is doing: that ought to keep her talking for a while.’

‘Where are you?’ Brunetti asked.

‘On Murano. Someone tried to grab a woman’s bag, and a mob formed and threw him in a canal. We had to come over to get him out.’

‘I’ll go and have a look,’ Brunetti said and replaced the phone, but not before he heard Vianello say, ‘She’s wearing a green shirt.’

He was so preoccupied with Vianello’s call that he was not prepared for the heat that hit him as he emerged from the Questura. It flowed over him in a single wave, and for a moment Brunetti didn’t know if the attack of sodden air would permit him to breathe. He stopped, stepped back into the miserable shadow cast by the lintel of the door, and took out his sunglasses. They cut the light, but they did nothing to help against the heat. His jacket, lightweight blue cotton, clung to him like an Icelandic sweater.

So sudden had been the assault of heat and light that it took Brunetti a moment to remember why he had come outside and then another to remember the way to Via Garibaldi.

‘Lunacy,’ he muttered to himself and crossed the bridge. He had no choice but to keep his eyes lowered against the glare and leave it to his feet to find the way. He wove left and right, giving no conscious thought to where he was going. His feet took him over another bridge, then to the right, and then he emerged into Via Garibaldi and wished he had not. The paving stones had had hours to bake, and the heat they sent up seemed a form of protest at their own helplessness. Caught between the unrelenting sun and the radiant heat from below, Brunetti could think of no way to protect himself. A woman brushed past him, saying ‘Con permesso’ more forcefully than she might have, but he was, after all, standing motionless on the pavement and blocking her exit from the calle. Her remark unblocked him and he stepped back into the entrance to the calle, which offered the minimal protection of shade.

After a moment, Brunetti mustered the courage to take a step out into Via Garibaldi and the heat. The bank stood down on the right; farther along, some tables hid under the umbrellas in front of a bar. At one of them sat Pucetti and a young woman, who was laughing at something the young officer said. She had light hair, cut boyishly short, which impression was contradicted by the tight white T-shirt she wore. Both of them wore sunglasses and Pucetti a black T-shirt that was every bit as tight as the girl’s without provoking the same effect.

Brunetti retreated into the calle, waited what he calculated to be a minute but knew must be less, and stepped forward again. Pucetti and the girl were getting to their feet. Brunetti noticed that she wore a very short skirt that showed tanned and attractive legs; both of them wore sandals. Between him and the two young police officers, an elderly woman stood in front of the bank, caught in that characteristically Venetian moment of calculating the shortest way to get somewhere. She looked up at the sky, as if she believed the exact temperature would be written there. She wore loose cotton trousers and a light green shirt with long sleeves. Her shoes were sensible brown pumps with a low heel, and she had the sturdy body common to women who have had many children and have been active all their lives. She carried a brown leather bag on her shoulder, both hands held in a firm grip on the straps. She set off to her left, down towards the embarcadero and Riva degli Schiavoni. As she walked, she stooped forward a bit and seemed to favour her left leg.

Just as she turned, the attractive young couple, who were farther along toward the boat stop, turned in the same direction and started walking ahead of her. Pucetti draped his arm over his companion’s shoulders, but it proved too hot, so they settled for holding hands as they walked. They paused to look into the window of a sporting goods shop, and the old woman passed them, paying no