Meiklejohn grinned and turned to Morse quietly. 'He's about as bad as you are – if not worse. I'm afraid I have to do the job myself.'

And may the good Lord be with you, thought Morse, as he made his rapid exit, completely forgetting that he was debtor to church funds to the sum of 2p; forgetting, too, that there was a most important question he had yet to put to the dare-devil incumbent of St Frideswide's.

In all there were twenty bulbs to change, and as always the job was taking an unconscionably long time to complete. To any observer of the scene, it would have appeared that the young man who stood dutifully with his foot placed firmly on the bottom rung of the ladder seemed quite incapable of raising his eyes above the strict horizontal as Meiklejohn repeatedly ascended to the dizzy heights above him where, standing on the antepenultimate rung, he would place his left hand for support against the bare wall, stretch up to twist out one of the old bulbs, place it carefully in his coat pocket, and then insert one of the new bulbs with an upward thrust of his right arm which virtually lifted his body into unsupported space. With the merest moment of carelessness, with the slightest onset of giddiness, the good vicar would have lost his precarious balance and plunged to his death on the floor so far below; but mercifully the task was now almost complete, and the ladder was in place below the last pair of bulbs when the door (which had remained unlocked) creaked open to admit a strange-looking man whose beard was unkempt, who was dressed in a long, shabby greatcoat, and who wore an incongruous pair of sun-glasses. For a moment or two he looked about him, unaware of the presence of the other two men. The afternoon had grown dull and the electricity had been turned off whilst the bulbs were being changed.

'Can I help you?' asked Meiklejohn.

'What?' The man started nervously. 'Cor, you frightened me, guv.'

'Please do have a look around. You're most welcome.'

'Sorright. I just – I just wanted to – er…'

'I can show you around myself in a minute if you can-'

'Nah. Sorright, guv.' He shuffled out, and Meiklejohn raised his eyebrows to the young man. The ladder was ready again now and he put his right hand up to the rung just above his head – and then stopped.

'You remember my predecessor here – poor Mr Lawson? He had a way with these down-and-outs, they tell me. Often used to have one or two of them staying with him for a few days. You probably know that anyway. Perhaps I should make more of an effort than I do. Still, we're all different, Thomas. Just as the good Lord made us.' He smiled, rather sadly, and began to climb. 'Perhaps poor Mr Lawson wasn't very good at changing light-bulbs, eh?'

Thomas managed a ghostly-weak smile in response and took up his guardian rôle on the bottom rung, his eyes once more averted from the fast-disappearing soles of the vicar's black shoes. Funny, really! He'd joined St Frideswide's church just over a year ago (he was an undergraduate at Hertford College) and he remembered the previous vicar very well indeed. He thought he remembered other things, too. For example, he thought he remembered the tramp who'd just walked in. Hadn't he seen him in church once or twice?

The decision to travel to Shrewsbury was taken, momentarily and arbitrarily, when Morse had walked out of the church on his way back to St Aldates; and as Lewis drove the police car round the Woodstock Road roundabout and headed out on to the A34 both men were mentally calculating the possible time-schedule. It was already 4.20 p.m. Two hours, say, to get there – if the traffic was reasonable; two hours actually there; another two hours back. So, with a bit of luck, they could be back in Oxford by about 10.30p.m.

Morse, as was his wont, spoke little in the car, and Lewis was quite happy to give his whole attention to the motoring. They had started in time to miss the diurnal mass exodus from Oxford which begins at about a quarter to five and continues its semi-paralytic progress for almost another hour. It was good fun, too, driving in a conspicuously marked POLICE car. As always other road-users immediately became punctilious about speed-restrictions as they spied the pale-blue and white car in their mirrors, and ostentatiously shunned the slightest suspicion of sub-standard driving, behaving with a courtesy and care that were wildly at variance with their customary frenetic aggression.

So it was now.

Lewis turned left off the A34 through Chipping Norton, up through Bourton-on-the-Hill, through Moreton-in-Marsh, and then, with the Vale of Evesham opening out in a vast panorama before them, down the long, steep hill into Broadway, its houses of mellowed Cotswold stone gleaming a warm yellow in the late afternoon sun. At Evesham, Morse insisted that they took the road to Pershore, in which town he enthused lovingly over the red-brick houses with their white-painted window-frames; and at Worcester he directed Lewis along the Bromyard Road.

'I've always thought,' said Morse, as they turned north from Leominster on to the A49, 'that this is one of the prettiest roads in England.'

Lewis sat silent. It was also a pretty long way round, and at this rate it would be about seven before they reached Shrewsbury. Yet as they drove past Church Stretton it seemed to Lewis that Morse was perhaps right; and even more so as they left the Long Mynd behind them, when the sun, still hovering over the Welsh hills far off on the western horizon, suffused the early evening sky with a fiery glow and turned the white clouds to the softest shade of purple.

It was half-past seven when finally the two Oxford detectives were seated in the Superintendent's office at the Salop Police H.Q.; and it was half-past eight when they emerged.

Morse had said little, and Lewis less, and neither man felt that the meeting was of more than routine value. There were no grounds for suspecting anyone, and not the slightest whisper of a likely motive. The dead woman had been quietly popular with her fellow-nurses, slightly less quietly popular with the surgeons and housemen, and it was difficult to believe that even Florence Nightingale herself could have found too many faults with her efficient and experienced nursing. One of the doctors had spoken to her the previous evening, had sat in the nurses' common room with her doing a crossword puzzle; but, although he was probably the last person (apart from the murderer) to see her alive, there was no reason whatsoever to suspect that he'd had anything to do with her death. But somebody had. Somebody had strangled her brutally with her own belt and left her for dead on the floor by the side of her bed, from where she had later managed to crawl to the door of her room to try desperately to call for help. But no one had heard her, and no one had come.

'I suppose we'd better see her?' said Morse dubiously, as they all trooped out of the Superintendent's office.

In the cream-tiled police morgue, a constable pulled out a sliding container from a stainless-steel structure, and turned back the sheet from the face – white, waxy-textured and washed, the lolling bloodshot eyes bearing their chilling witness to the agony of her death. At the base of her neck and running up to her right ear was the hideous groove left by the belt.

'Probably left-handed,' muttered Lewis, 'if he strangled her from the front, that is.' He turned towards Morse as he spoke', and noticed that the great man had his eyes shut.

Five minutes later Morse was looking immeasurably happier as he sat in the anteroom surveying the contents of the murdered woman's pockets and handbag.

'We should be able to check the handwriting easily enough,' said Lewis, as he saw Morse studying the letter from Kidlington.