10 : Twenty Years AfterIt was wet and bitterly cold, with sludge on the pavement and dark grey blankets in the sky, when Mr. Campion walked thoughtfully down Nemetia Crescent, Streatham, and tried to imagine it as it had been on a May morning twenty years before. To his relief, there was no sign of any recent building operations, and, although the neighbourhood had gone down a little, he suspected, there was no evidence of any structural alteration. It was a melancholy little enclosure, a half hoop of flat-fronted houses looking out across a strip of wet tarmac at a bank of dilapidated shrubs. He found the house out of which Tom Barnabas had walked on May the eighth, nineteen hundred and eleven, and stood in the rain looking at it. Dingy lace curtains covered the windows and a fly-blown