‘Doctors,’ she corrected.

‘Excuse me?’ said Brunetti, at a loss.

‘Doctor Crowley and Doctor Crowley,’ she explained. ‘Fred’s a surgeon, and I’m an internist.’ Before he could express his surprise that people their age were still working as doctors, she added, ‘Well, we were, that is.’

‘I see,’ Brunetti said, then paused and waited to see if they had any intention of answering his original question.

They exchanged a look, then the woman spoke. ‘We were just coming into what you call the campo, and I saw all these purses on the ground and the men selling them. I wanted to have a look and see if there was something we could take back to our granddaughter. I was standing just in front, looking at the purses, when I heard this strange noise, sort of like that fitt, fitt, fitt your coffee machines make when they turn that nozzle thing to make the steam. From my right, three times, and then from the left, the same noise, fitt, fitt, twice that time.’ She stopped, as if hearing it all over again, then went on. ‘I turned to see what the noise was, but all I could see were the people beside me and behind me, some of the people from the tour, and a man in an overcoat. When I looked back, that poor young man was on the ground, and I knelt down to try to help him. I think I called for Fred then, but it might have been later, when I saw the blood. At first I was afraid he’d fainted; not being used to the cold, or something like that. But then I saw the blood, and maybe that was when I called Fred; I really don’t recall. He did a lot of time in the Emergency Room, you see. But by the time Fred got there, I knew he was gone.’ She considered this, then added, ‘I don’t know how I could tell, because all I could see was the back of his neck, but there’s a look about them, when they’re dead. When Fred knelt down and touched him, he knew, too.’

Brunetti glanced at the husband, who picked up her story. ‘Martha’s right. I knew even before I touched him. He was still warm, poor boy, but the life had gone out of him. Couldn’t have been more than thirty.’ He shook his head. ‘No matter how many times you see it, it’s always new. And terrible.’ He shook his head and, as if to emphasize his words, pushed his empty cup and saucer a few centimetres across the table.