It is always a mistake to go back — and to go back to a place where one has been wholly happy is foolishness indeed.

Knowing this, Rupert was nevertheless badly shaken by the intensity of the memories which gripped him. He had survived well enough at Eton, but it was at Cambridge that he entered his heritage. It was here that he had discovered his passion for scholarship, here that he learned to excel at the solitary sports he so greatly preferred to the endless team games of his adolescence: here, above all, that he had learned the meaning of friendship.

Now, crossing Trinity Great Court, passing the shabby rooms on Q staircase with the carved motto on the mantelpiece (“Truth thee shalt deliver: it is no drede’) which had been his own, he walked through a gallery of ghosts. On the rim of this fountain, Con Grainger, deeply drunk and wearing striped pyjamas had declaimed, verbatim, Demosthenes’ Second Philip pic, before falling senseless into the water. Over that ridge of roof, now bathed in sunshine, Naismith, besotted with love for an Amazonian physicist from Girton, had climbed at night to hold hopeless court beneath her red-brick tower. Naismith had been killed outright within a month of reaching France — luckier than Con, perhaps, who still lay, shell-shocked and three-quarters blind in a Sussex hospital. And Potts, the brilliant biochemist who had kept a lonely beetroot respiring in a tank… Potts, who was a ‘conchie’, and had been handed a white feather by an old lady in Piccadilly the week before he’d taken his stretcher across the lines to fetch back one of the wounded and been blown to pieces by a mine…

Rupert walked on through the arch on the far side and made his way down to the river, only to be led by its lazy, muddy, unforgettable smell into another bygone world: of punts moored behind willows, of picnics at Byron’s pool — and girls.

But this, too, was forbidden country now and turning, Rupert made his way back to the master’s lodge, where he had been bidden to take sherry before luncheon at high table.

Later in hall, among the napery and fine glass, the ghosts crept quietly away. Here time really had stood still. Kerry and Warburger were still splenetically dismembering a colleague’s ill-considered views on Kant; Battersley was still laughing uproariously at his own appalling puns; the fish pie was still the best in England.

‘Coming back to us, then?’ enquired Sir Henry Forster, regarded by most people, himself included, as England’s foremost classicist. ‘Quite a good chance of a fellowship, I should think. I remember your paper for the Aristotelian Society. An interesting point you made there, about the morale factor in Horatius’s victory over the Curiatii.’

‘Keeping up your fencing, I hope?’ said the bursar, who had won ten pounds from his opposite number at Christchurch when Rupert and his team had taken the cup from Oxford.

Rupert answered politely, but his mind was already on his interview with the man he’d come to see. Professor Marcus Fitzroy was not in hall, because he despised food as he despised sleep and undergraduates and anything else which prevented him from getting on with the real business of life, namely the total understanding and expert disinterment of those distant and long-dead peoples whose burial customs so powerfully possessed his soul.

As soon as politeness permitted, Rupert made his way to the professor’s rooms in Neville Court. He found them marvellously unchanged. A shrunken head on the mantelpiece supported an invitation to a musical evening; jade leg ornaments, axes and awls, and Rupert’s own favourite, the skeleton of a prisoner immolated in the Yangtse Gorge, lay in their former jumble. Among the debris, a more recent strata of half-packed boxes, rolls of canvas and coils of rope indicated signs of imminent departure. The crumbling, highly archaeological-looking substance on a saucer seemed, however, to be the professor’s lunch.

‘You’re off tomorrow, then, sir?’ asked Rupert when greetings had been exchanged.

Professor Fitzroy nodded. He was a tall man, sepulchrally thin, with a tuft of grey hair which accentuated his resemblance to a demented heron. ‘Pity you couldn’t come,’ he said. ‘I’ve got to take that ass, Johnson.’ The professor’s contempt for students had not extended to Rupert, who, on a couple of undergraduate expeditions, had shown himself to possess not only physical endurance and the investigative acumen one might expect of Trinity’s top history scholar, but also something rarer — a kind of silent empathy with the tribesmen and mountain people they had encountered. That a man like this should be wasted on an earldom and a rich marriage seemed to the professor to be an appalling shame.

‘You’re making straight for the Turkish border?’ enquired Rupert, holding down the lid of a crate for the professor to hammer in.

‘Yes, it’s only a quick trip,’ said Fitzroy disgustedly, for his real passion was for the wastes of Northern Asia — and the Black Sea, professionally speaking, did not rank much above Ealing Broadway. ‘I’ve been landed with a field course back here in September; these damned ex-servicemen are so keen.’

‘You said in your letter you hoped to go up to the cave monastery above Akhalsitske?’

‘That’s right. It’s an extraordinary place — everyone seems to have been there. Alexander, of course, and then Farnavazi when he set up court at Mtskhet… And then there’s the Byzantine stuff plonked down on top of it all,’ said the professor, waving a dismissive hand at the modern upstart that was early Christendom. ‘I’m going to look at the rock frieze in one of the inner caves. I’ve been corresponding with Himmelmann in Munich and he’s convinced there’s a link there with the Phrygian tomb monuments at Karahisor.’

‘But surely, sir, that’ll take you across the Russian border? Isn’t there some fighting still going on there?’

The professor shrugged. ‘I don’t suppose it’ll bother me.’

Rupert thought this possible. Professor Fitzroy, who had carried a mummified goat across the Kurrum valley in Afghanistan while being shot at by both sides during the Ghilzai’s rebellion, would probably not be greatly troubled by the remnants of a Russian civil war. In addition to a total indifference to hardship and danger, the professor possessed a brother who was something very high up in the Foreign Office and of whom he unashamedly took advantage to get his archaeological finds back through customs including — so rumour had it — a beautiful Circassian wrapped in a camel blanket whom he was said to have installed in his house at Trumpington.

For a while they talked of what interested them both. Then Rupert, aware that he was holding the professor up, came to the point. ‘I was wondering, sir, if you’d do me a favour? A very considerable one, I’m afraid.’

Professor Fitzroy straightened from the bedroll he had been tying and looked at the Earl of Westerholme. Most of his archaeological colleagues had been German and he had hated and despised the war. Yet when they’d heard that Rupert Frayne, with exactly ten hours’ solo flying to his credit, had won the MC for coming to the rescue of a wounded fellow pilot, Fitzroy had surprised himself by treating his whole staircase to champagne. Now he answered Rupert’s query with a single word: ‘Yes.’

An hour later, while making his way down King’s Parade, Rupert heard his name called and turned. Beckoning him from beneath a muslin parasol was an enchantingly pretty girl with blonde curls and huge, blue eyes, dazzlingly arrayed in pleated white linen.

‘Zoe!’

Delightedly, Rupert went over and took the hand she offered in both his own. Zoe van Meck had been the nicest, the most sensitive, of the VADs who’d nursed him, and he remembered with admiration the efforts she had made to overcome her tender heart and achieve the degree of efficiency the job required. ‘My goodness, you look devastating! Going on the river?’

Zoe nodded. ‘I’m just on my way to Cat’s.’

‘Unchaperoned?’ said Rupert, pretending to be shocked.

‘Well, not quite; I’m going with a party,’ she said, smiling up at him, ‘my aunt and uncle live here; it comes in very handy for May Balls and things.’

Her voice was a little breathless, for suddenly seeing Rupert like that had stirred up something she’d believed safely buried. The tendresse which so many of his young nurses had felt for the Earl of Westerholme had gone rather deeper with Zoe van Meck — so much so that she had been almost relieved when she was transferred from the officers’ quarters down to the men’s wards on the floor below. But after her move she had seen almost as much of Rupert as before, for as soon as he was even partially ambulant, Rupert had insisted on going down to talk to the men. The only time she’d seen Rupert lose his temper was when the bossy ward sister, obsessed by rank and protocol, had attempted to turn him back. She could see him now, sitting still as stone by Corporal Railton’s bed until he died — and Railton hadn’t even been one of his own men, just a lad he’d met on the hospital ship coming home.

‘You’re not married yet?’ asked Zoe.

‘At the end of this month,’ said Rupert, his voice expressionless.

Zoe sighed. She’d had three offers of marriage at the Peterhouse Ball alone and a young merchant banker sent her roses every day — yet at this moment she would gladly have changed places with Muriel Hardwicke.

And partly from mischief, partly to give her thoughts a more cheerful turn, she said, ‘And how do you like your new relatives?’

‘What do you mean?’ asked Rupert, puzzled.

‘Muriel’s family, I mean, up in Yorkshire.’

Rupert frowned. ‘Muriel doesn’t have any family, Zoe.’

Zoe dimpled up at him. ‘Oh yes she does! I was up there for Verena’s ball and she took me into the village. Old Mrs Hardwicke was truly splendid, especially after she’d had her morning stout, but I think my favourite was Uncle Nat…’

Rupert took her arm. ‘I’ll escort you to St Catherine’s,’ he said. ‘And now, please tell.’

And Zoe, accepting his escort with alacrity, told.

Mrs Bassenthwaite’s illness hit Proom hard. True, it was a while since the housekeeper had taken a very active part in the running of Mersham, but in her quiet way she had held the strings together. Deprived of a working companion of nearly thirty years’ standing, Proom found that a great many extra tasks fell on his shoulders. Normally, in the spate of work building up for the wedding, he would have relied on his right-hand man, James. But James had been acting strangely of late. Nothing could make James incompetent, but these days Proom would often see him in his pantry, the polishing cloth hanging from his hand, staring listlessly at the silver. He scarcely ever seemed to whistle, and when Peggy had enquired in her friendly way after his trapezius muscle he had turned from her without a word.

Then one morning he didn’t come down to work at all. The new hallboy, engaged as a result of the affluence Muriel had brought to Mersham, was despatched to the men’s attics and came down to say that he had knocked on the first footman’s door and been told to scram, and scram fast.

Proom himself went to investigate.

James was sitting on his bed, wearing only his pyjama trousers. Over the years he had turned his attic into a replica of the gymnasium where his heroes built up, with patience and dedication, their splendid, monumental bodies. There was a long mirror, and a set of iron dumbells racked in pairs from the smallest five pounder to the hundred-pounder that James now worked with ease. There was a chest expander with coiled springs like the hawsers of an ocean liner, a stationary bicycle it had taken him thirty weeks to save up for and a pair of scales discarded by the old weigh house at Maidens Over. And on the walls, everywhere, pictures… Pictures of Mhatsi Adenuga, the fabled ‘Abyssinian Lion’, his oiled and ebony muscles held in a classic ‘double biceps’ pose… of the great Sandow, supporting on his shoulders a platform containing nineteen people and a Pekinese…

And on the bed, James, staring blankly into space. James who, through years of unremitting labour, had turned his scrawny, undersized body into something that could be set with honour beside these giants. No one, not even Proom, knew what it had cost James. The freezing hours before dawn doing the endless leg curls, the agonizing bench presses, never giving up even when, week after week, the scales held steady and the next weight proved immovable. But he’d done it… and now…

Proom’s footsteps, silent as always, made no impression.