The hand was elegant, long fingers, well kept nails, the bright pink varnish contrasting vividly with flesh that had turned the colour of alabaster, except for a long strip of dark, congealed blood in a gash that ran along the leading edge of her thumb and into her wrist. It looked like a defence wound. He wondered who she was, what kind of a person she was, what had led to this.

The first twenty-four hours in a murder enquiry were key. After that, detection became increasingly slow and laborious. Over the following hours and days he knew he would have to drop just about everything else in his life for this enquiry. He would get to know as many details of her life and death that her body, her home, her personal effects, her family and friends could yield. It was likely he would end up knowing more about her than anyone who had known her when she was alive.

The enquiry would be invasive and at times brutal. Death alone did a pretty thorough job of stripping away human dignity, but it had nothing on a police forensic investigation. And there was always the haunting sense that this dead person’s soul might – just might – be watching him.

‘This is where we think the hand came from, Roy.’ The bulky figure of Bill Barley, the local Detective Inspector from East Downs Division, made even bulkier-looking by his white oversuit billowing in the wind, stood beside him, pointing a latex-gloved finger across the field which he had diligently cordoned off at a site where several SOCO members, also in white suits, were busy erecting a square white tent.

Beyond, at the edge of the field where he had parked, Grace could see yet another vehicle joining the cluster of marked and unmarked police cars, the dog-handler’s van, the photographer’s van and the tall, square truck-sized shape of the Major Incident Vehicle dwarfing everything.

The Coroner’s black van hadn’t been summoned yet. Nor had the press been notified, but it wouldn’t be long before the first reporter arrived. Just like the blowflies.

Barley was a true old sweat, in his fifties, with a bluff Sussex accent and a rubicund face lined with broken veins. Grace was impressed by the speed with which he had secured the area. The worst nightmare was to arrive at a murder scene where inexperienced officers had already trampled most of the evidence into the ground. The DI appeared to have this scene well under control.

Barley covered the hand with some heavy-duty sheeting, then Grace followed him, stepping carefully in his tracks to disturb the ground as little as possible, glancing every few moments at a police Alsatian loping gracefully through the rape in the distance, until they reached the area where most of the activity was concentrated. Grace could see immediately why. In the centre, flattening a small area of the crop, was a large, crumpled black bin liner, with torn shreds jigging in a gust of wind, and several bluebottles flying around it.

Grace nodded greetings at one of the SOCO officers, Joe Tindall, who he knew well. In his late thirties, Tindall used to look like a mad scientist, with a thatch of dull hair and bottle-lensed glasses, but had had a makeover since falling in love with a much younger girl. Now, inside his hooded white suit, he sported a completely shaven head, a quarter-inch-wide vertical strip of beard running from the centre of his lower lip down to the centre of his chin, and hip rectangular glasses with blue-tinted lenses. He looked more like a drugs dealer than a boffin.

‘Morning, Roy.’ Tindall greeted him in his usual sarcastic tone. ‘Welcome to “One Thousand and One Things to Do with a Bin Liner on a Wednesday Morning in Peacehaven”.’

‘Been shopping, have you?’ Grace asked, nodding at the black plastic.

‘You can’t believe the things you can get with your Nectar points these days,’ Tindall said. Then he knelt and very carefully opened out the liner.

Roy Grace had been in the police for nineteen years, the past fifteen of which he had spent investigating serious crimes, mostly murders. Although every death disturbed him, there wasn’t much any more that really shocked him. But the contents of the black bin liner did.

It contained the torso of what had been clearly a young, shapely woman. It was covered in congealed blood, the pubic hairs so matted he couldn’t tell their colour, and almost every inch of her flesh had been pierced by some sharp instrument, probably a knife he thought, in a frenzy of stabbing. The head was absent and all four limbs had been severed. One arm and both legs were in the bag along with the body.

‘Jesus,’ Grace said.

Even Tindall’s humour had dried up. ‘There’s some really sick bastard out there.’

‘Still no head?’

‘They’re looking.’

‘A pathologist’s been called?’

Tindall waved away a couple of bluebottles. Some more appeared and Grace flapped those away, angrily. Bluebottles – blowflies – could smell decaying human flesh from five miles away. Short of a sealed container, it was impossible to keep them away from a body. But sometimes they were useful. Bluebottles laid eggs, which hatched into larvae, which became maggots and then bluebottles. It was a process which took only a few days. On a body that had not been discovered for weeks it was possible to work out roughly how long it had been dead from the number of generations of insect larvae infestation.

‘Someone’s called for a pathologist, I presume, Joe?’

Tindall nodded. ‘Bill has.’

‘Nadiuska?’ Grace asked, hopefully.

There were two Home Office pathologists who tended to be sent to murder scenes in this area, because they lived reasonably locally. The police favourite was Nadiuska De Sancha, a statuesque Spaniard of Russian aristocratic descent who was married to one of Britain’s leading plastic surgeons. She was popular because not only was she good at her job, and extremely helpful with it, but she was wonderful to look at. In her late forties, she could easily pass for a decade younger; whether her husband’s craftsmanship had had anything to do with that was a matter of constant debate among all who worked with her – the speculation fuelled even more by the fact she invariably wore roll-neck tops, winter and summer.

‘No, luckily for her – Nadiuska doesn’t like multiple stabbings – it’s Dr Theobald. And there’s a police surgeon on his way as well.’

‘Ah,’ Grace said, trying not to let the disappointment show in his voice. No pathologist liked multiple stab wounds because each one had to be painstakingly measured. Nadiuska De Sancha was not just eye candy, she was fun to work with – flirtatious, a big sense of humour and fast in her work. By contrast, Frazer Theobald was, by general consensus, about as fun to be around as the corpses he examined. And slow. So painfully slow. But his work was meticulous and could never be faulted.

And suddenly, out of the corner of his eye, Grace could see the man’s diminutive frame, all in white and clutching his large bag, striding across the field towards them, his hooded head not that far above the top of the rape.

‘Good morning, all,’ the pathologist said, and exchanged latex-gloved handshakes with the trio.

Dr Frazer Theobald was in his mid-fifties. A stockily built man a tad under five foot two inches tall with beady, nut-brown eyes, he sported a thick Adolf Hitler moustache beneath a Concorde-shaped hooter of a nose and an untidy, threadbare thatch of wiry hair. It would have not needed much more than a large cigar for him to have gone to a fancy dress party as a passable Groucho Marx. But Grace doubted Theobald was the kind of man ever to have contemplated attending something as frivolous as a fancy dress party. All he knew about the man’s private life was that he was married to a lecturer in microbiology, and that his main relaxation was solo dinghy sailing.

‘So, right, Detective Superintendent Grace,’ he said, his eyes fixing first on the remains inside the flapping sheets of the bin liner, then on the ground around. ‘Can you bring me up to speed?’