More startling still was the graffiti. That was what she had come here to see, encouraged by Archie's talk of the place, and she was not disappointed. It was difficult to believe, staring at the multiple layers of designs, names, obscenities, and dogmas that were scrawled and sprayed on every available brick, that Spector Street was barely three and a half years old. The walls, so recently virgin, were now so profoundly defaced that the Council Cleaning Department could never hope to return them to their former condition. A layer of whitewash to cancel this visual cacophony would only offer the scribes a fresh and yet more tempting surface on which to make their mark.

Helen was in seventh heaven. Every corner she turned offered some fresh material for her thesis: 'Graffiti: the semiotics of urban despair'. It was a subject which married her two favourite disciplines - sociology and aesthetics - and as she wandered around the estate she began to wonder if there wasn't a book, in addition to her thesis, in the subject. She walked from courtyard to courtyard, copying down a large number of the more interesting scrawlings, and noting their location. Then she went back to the car to collect her camera and tripod and returned to the most fertile of the areas, to make a thorough visual record of the walls.

It was a chilly business. She was not an expert photographer, and the late October sky was in full flight, shifting the light on the bricks from one moment to the next. As she adjusted and re-adjusted the exposure to compensate for the light changes, her fingers steadily became clumsier, her temper correspondingly thinner. But she struggled on, the idle curiosity of passers-by notwithstanding. There were so many designs to document. She reminded herself that her present discomfort would be amply repaid when she showed the slides to Trevor, whose doubt of the project's validity had been perfectly apparent from the beginning.

'The writing on the wall?' he'd said, half smiling in that irritating fashion of his, 'It's been done a hundred times.'