‘Do you think this is funny?’ she asked and her voice was hoarse. Even if she’d got some sleep on the plane over she had to be pushing twenty-four hours without by now. ‘Is it because the victim is an American citizen? Do you find the murder of American citizens funny?’

I was tempted to tell her it was because we were British and actually had a sense of humour, but I try not to be cruel to foreigners, especially when they’re that strung out. I took a gulp of my coffee to cover my hesitation.

‘What makes you think he’s involved?’ I asked.

‘He’s a criminal,’ she said.

‘We did him for possession,’ I said. ‘Murder would be a bit of a step up.’

‘Not in my experience,’ she said. ‘James Gallagher was his meal ticket. Perhaps James got tired of being freeloaded on.’

‘I’m sitting right here, you know,’ said Zach.

‘I’m trying to forget it,’ said Reynolds.

‘He has an alibi,’ I said.

‘Not a direct one,’ she said. ‘There could be a way out of the back that goes through a blind spot.’

Did she think we were amateurs? Stephanopoulos would have spent most of yesterday trying to break Zach’s alibi and that included the notion of a back way out.

‘Is it usual for FBI agents to exceed their authority in this way?’ I asked.

‘The FBI is legally responsible to investigate crimes committed against American Citizens in foreign countries,’ she said, her eyes fixed on some abstract spot to the left of my head.

‘But you don’t really, do you?’ I said. ‘Not that it wouldn’t have been nice to have a bit of extra manpower, especially for that one assault that we had in Soho. Young man got a crowbar in the face, he was American, no sign of the FBI then.’

She shrugged. ‘His father probably wasn’t a senator.’

‘Apart from the security aspect,’ I said, ‘what are they really worried about?’

‘His father is in a position of moral authority,’ she said. ‘It wouldn’t serve any purpose to have him compromised by something his son may have done.’

‘What do you think his son may have done?’

‘There were incidents while he was at college,’ she said.

‘What kind of incidents?’ asked Zach before I could.

I sighed and pointed at a table at the other end of the room. ‘Go and sit over there,’ I said,

‘Do I have to?’ he asked.

‘This is grown-up stuff,’ I said.

‘Don’t patronise me.’

‘I’ll buy you a cake,’ I said.

He sat up like a small dog. ‘Really?’

‘If you go sit over there,’ I said, and he did. I turned to Reynolds. ‘I can see why you consider him a suspect. What kind of incidents?’

‘Narcotics,’ she said. ‘He was arrested twice for possession but the charges were dropped.’

I bet they were, I thought.