What Carol hadn’t registered was the battered white van parked behind the Mondeo. Inside, it was fitted out with state-of-the-art surveillance kit. Morgan, Thorson and Surtees perched on swivel chairs, headsets clamped to their ears. ‘That’s her, isn’t it?’ Thorson said. ‘She’s changed the way she looks, but it’s her.’

‘You can always tell by the walk,’ Surtees said, reaching across her to snag a Thermos he’d had filled with café latte from his favourite Old Compton Street bar. ‘The one thing it’s almost impossible to disguise.’

Morgan stared intently into one of the video monitors. ‘She’s carrying on to the corner. That’s two passes. She’ll go in next time.’

‘She handled those two thugs well,’ Surtees said, pouring out his coffee and pointedly not offering any to his colleagues. Morgan, he knew, would have his inevitable bottle of San Pellegrino stashed somewhere. Thorson he’d never liked enough to want to share anything with.

Thorson glared at him as the rich aroma of the coffee hit. She never seemed to manage to be as prepared for things as that anally retentive bastard Surtees. He always made her feel inadequate. She suspected that Morgan knew that, and that it was one of the reasons he kept them working together. He always liked to keep people on their toes. It meant he got results, but she couldn’t help feeling that it was sometimes at the expense of the nervous systems of his team members. She craned her neck to look at the monitor over Morgan’s shoulder. ‘All units in place, target entering,’ she heard through the crackle in her headset. ‘On my word, not before.’

Carol had come back into sight, this time moving with a determined stride towards the heavy glass and chrome doors of Damocles. Morgan clicked the mouse linked to the video display and the picture changed to the inside of the café. Another click and the screen split into two images. One showed the whole of the interior, the other focused on the man sitting reading and smoking at a table in the rear. They watched as Carol walked in and made straight for the bar. She chose a stool towards the back of the room, a little distance from the man she’d been told was her contact. But she made no attempt to catch his attention. She said something to the barista, who supplied her with a mineral water.

‘A pity we couldn’t get audio in place,’ Surtees said.

‘There’s far too much background noise,’ Thorson said. ‘We tried a mike under the table, but the marble blocked out anything worth hearing.’

Carol reached into her bag and pulled out a packet of cigarettes. She took one out and put it between her lips.

‘I didn’t think she smoked,’ Thorson said.

‘She doesn’t.’ Morgan frowned at the screen. ‘What is she up to?’