‘I don’t know.’

‘Have we traced the source of the video footage you were sent, Ben?’ asked Hitchens. ‘That would give us a line on the animal rights people.’

‘Becky has been helping me on that,’ said Cooper. ‘But at the moment, it looks as though it could have been almost anyone. The video is available on the internet, for members of the public to download and distribute.’

Hitchens shook his head. ‘The internet makes things so damn difficult. Well, we must at least have identified all the calls on Rawson’s mobile phone?’

‘Yes,’ said Fry. ‘Apart from Hawleys, and Mr Gains at R & G Enterprises, there were three calls to the number of Michael Clay, one to Senior Brothers at Lowbridge. And two calls each way to an unregistered pay-as-you-go mobile.’

‘This was on Monday evening?’

‘Right. There were no calls logged on Tuesday morning.’

‘Do you think there could have been a woman involved?’

‘It might have been anyone – a customer, a seller . . . who knows?’

Hitchens looked thoughtful. ‘I’m still not clear how the operation works. How do horses end up as meat when they’re not supposed to?’

‘It’s not clear to me, either. I suppose we could mount an undercover operation.’

‘How?’

‘We send someone in as a horse owner with an animal to sell.’

‘Who could we use for that?’

‘I’d be willing to give it a go, sir,’ said Fry.

But Hitchens shook his head. ‘We have specially trained officers for undercover work, Diane. Operational Support will provide someone, if necessary.’

‘I hope they’ve got someone who can pass as an expert on livestock.’

‘I doubt it.’

They looked at each other for a moment, then they both looked at Cooper. Oh, yes. The officer everyone thought of when there was an expert needed. Fry could have kicked herself for the reaction.

But Cooper didn’t respond. And it wasn’t like him to be reluctant to jump forward and volunteer.

‘We’ll think about it,’ said Hitchens after a moment. ‘There’s no rush. Let’s check out the horse market first. See if we can pick up any useful leads.’

‘By the way,’ said Cooper, ‘this restaurant . . .’

‘Which restaurant?’

‘Le Chien Noir.’

‘Oh, yes. I had hopes that the head waiter would remember more about Patrick Rawson’s visit, but he’s never called me.’

‘A French restaurant, is it?’

‘In principle,’ said Fry. ‘I doubt any of the staff are actually French.’

‘Did you happen to get a copy of the menu?’

‘No. Why? Are you thinking of taking your girlfriend there?’

‘Well . . . we know France is one of the biggest markets for horse meat. And the guy at R & G Enterprises told you they were trying to introduce horse meat to the British market gradually –’

‘– through a small number of select restaurants. You think Le Chien Noir could be one of them?’

‘It might just be a coincidence. But if Patrick Rawson was known there . . .’