Today, everything was different. She was looking at the world through a different lens. From the perspective of a drugs courier, nothing was quite the same. Every face on the street was a potential cause for concern. Every dodgy doorway could pose some unnamed threat. To walk down Old Compton Street was to tiptoe into the danger zone, antennae bristling and every sense quivering with alertness. She wondered how criminals coped with these levels of adrenaline. Just one morning and she was jittery at some deep level, her stomach clenched and her skin clammy. Simply trying to keep her pace down to a stroll took every ounce of effort she had to give.

She turned into Dean Street, her eyes scanning the pavements and the roadway, constantly checking to see if anyone was taking an interest in her. Something tricky was bound to be lying in wait for her, and she wanted a sense of what that might be.

Carol spotted Damocles up ahead of her on the opposite side of the street. It looked like a typical Soho café-bar, all designer chairs and marble tables, exotic flower arrangements visible through the smoked-glass window. She kept on walking till she reached the next corner, then circled the block so that she came back down Dean Street in the opposite direction.

She was almost level with them when she saw them. She’d never worked Drugs, but she was familiar with the plain clothes cars they used. This one looked like a bog-standard Ford Mondeo, but what gave it away were the twin tail pipes of the exhaust. This had a lot more under the bonnet than the standard engine. The stubby radio aerial sticking out of the rear window was confirmation enough if she’d needed it. The driver sat behind the wheel, ostensibly reading the paper, a baseball cap pulled down to shield the top half of his face.

Where there was one, there would be more. Now she had a better idea of what she was looking for, Carol carried on ambling down the street. There was another car she was fairly sure was Drugs Squad, again with the driver in place behind his newspaper. Directly opposite Damocles, two men were making a very thorough job of cleaning the window of a newsagent’s. A third man was bending over a bike, pumping up the rear tyre very slowly, checking the pressure with his fingers every few seconds.

Two car loads, she thought. That meant six or eight officers. She’d clocked five, which meant there were probably another three she hadn’t spotted. If she was their target, the chances were that the others were already inside the café. Fine. So be it.

Time for a little improvisation.