Then the order came to get Massin out. Too big a trophy to risk him being captured, said the instruction; bring him out by whatever means possible.

Rocco and two others were assigned to the task, along with Massin’s two adjutants. Under covering fire from the men on the front, they had moved on foot through the last known gap left towards the rear. As the small group moved out, the incoming barrage grew more intense, pounding the positions in a deadly, relentless drum roll. By the time they had covered a desperate, muscle-burning thousand metres, the barrage was beginning to fade. Another five hundred metres and it fell silent altogether, save for an occasional haunting gunshot.

Rocco slept, his dreams vivid. Eventually, at eight, he pitched himself from his bed feeling like death, his head reeling. He put on some coffee, then walked around the large garden, head up and tasting the morning air. It was fresh and cool, completely free of his usual intake of petrol and other inner-city fumes, and he breathed deeply for the first time in years.

A honking at the front of the house drew him to the front gate, where a grey Renault 2CV Fourgonnette stood in the middle of the lane. Mme Denis and two other women were standing by the rear doors. The driver, a lugubrious man in his sixties, waved a thumb towards the back. ‘Help yourself, Inspector – settle up at the end of the week.’

Rocco went through the greeting rituals with Mme Denis and her companions and helped himself to a baguette. He studied the car, remembering Claude’s recommendation of its finer points. Somehow he couldn’t see himself even squeezing inside, let alone driving one. He ambled back to the kitchen, where the aroma of coffee was replacing that of dust and mouse droppings, and settled down at the table. Breaking off one end of the baguette, he chewed the still-warm bread with relish, chasing it down with a mouthful of coffee. Stretched his legs out and sighed.

For the first time, Dien Bien Phu and everywhere since – even Clichy – seemed a long way away.

By ten, nursing a mild headache, he was heading back towards the cemetery. On the way he stopped outside the co-op and went inside. He was greeted by a raft of pleasant smells. A pretty, dark-haired woman was serving, and nodded in reply to his general good morning. The three other customers all turned and murmured back, eyeing him at length without a flicker of embarrassment before going back to their shopping.

Rocco forced a smile and waited; it was worse than being before a promotion panel. When the queue had gone, he selected some cheese, cooked meats and pickles. If he was going to live in the country, he might as well get used to country living, preferably without too much effort.

The woman rang up his purchases and put them in a bag.

‘Having a moving-in party, Inspector?’ she said with a smile. He was surprised, expecting more reserve towards an outsider. In Paris, he would have been served with little or no exchange, treated like the stranger he was.

‘This is the first course,’ he replied, and handed her the money, instantly feeling out of place, an amateur. The truth was, he had come to prefer the larger city shops, where contact was minimal and the choice was endless and not open to comment. Here, the scrutiny felt almost intimate. ‘Perhaps you could recommend a main course?’ He wasn’t sure where that had come from, and began to look for a way out.

‘Chicken’s good,’ she replied, ‘and easy to cook.’ She took off a cotton serving glove and held out her hand. Her fingers were soft and cool, but with a firm grip. ‘Francine Thorin. Welcome to Poissons, Inspector. We don’t bite, you know, unless you’re an inspector of taxes. Then we just won’t serve you.’

‘Rocco,’ he said briefly, feeling the conversation getting beyond his control. He gestured towards the door and said, ‘Thanks. Sorry … I have to be going.’ He turned and walked out, face burning, and felt her smile boring into his back all the way out of the door.

Back at the cemetery, he inspected the ground around the monument. There was no sign of John Cooke, and all traces of the body and the crime scene markers had been cleared away.

He wasn’t expecting to discover anything new, but he sometimes found that going back to the scene once all the evidence had been cleared away opened up new lines of thought and insight. But not this time. If there was something there, he wasn’t seeing it.

He walked up through the cemetery to where it abutted the wood, and hopped over the wall. Stepping cautiously into the trees, he negotiated a straggly wire fence half-buried in the undergrowth, recalling what Claude had said about the deadly contents of this place. He felt a shiver run up his legs at what might be lying in wait beneath his feet, and stood for a moment, absorbing the atmosphere, tuning in to the scenery around him. The breeze was lighter than yesterday, but there was still the rustling in the leaves, like whispering gossips, their words sibilant and foreign.

No images today, though; no clamminess.

He breathed easily and studied the ground. He was standing roughly where he had seen Didier Marthe yesterday. Over to his right, a patch of nettles lay crushed and bent. Further on, a section of ground cover had been disturbed, in clear contrast to the area immediately around it. Marthe had walked across here, trying to stay on open ground, where his traces would be less likely to show. No doubt the poacher he had once been … or maybe was still.

Rocco followed the trail, stepping carefully in Marthe’s footsteps, not deviating from the route by a centimetre. Although much heavier than the scrap man, he figured he was reducing his odds of setting off anything if he trod the same path.

At the edge of the wood, he found a large patch of what he thought looked like bluebell leaves, bent and broken, long past their prime. Nearby, on some disturbed soil, was a faint zigzag pattern too regular to be made by nature, and a thin line of flattened plants leading away towards the track.

Bicycle tyres.

He followed the marks out onto the track and walked down past the cemetery. There, the signs ran out.

* * *

By midday he was in Amiens, working his way through various levels of administration at the station, showing his credentials and transfer papers and trying to commit to memory the names of those he met. Most of the officers and civilian staff were cordial, with a few wary greetings, mostly among the other detectives manning their desks. He guessed that they had heard about him from Canet, who was out on a job, and were suspicious about his presence, a spy come to haunt them and report on their work. The air around them was a thick fug of cigarette smoke, reminding him of the office in Paris, except that the atmosphere here was quieter, less frenetic, less an air of tension and more of passive duty.

He saw Perronnet in the first-floor corridor. The senior officer nodded cordially but made no comment, merely indicating a door further along. Rocco took the hint and went to the door. Knocked and entered.

Massin was seated behind a large desk perusing the contents of a buff folder. The office was sparsely furnished: no certificates on the walls, no cups or medals, no testimonials or glitter from a successful career. Rocco gave him the benefit of the doubt: maybe he hadn’t had time to put them up yet. Still busy getting his feet under the desk and arse-kicking, as Canet had called it.

‘Can I help you?’ Massin stopped reading and stared at him. ‘You have any developments in your investigation?’

Developments, thought Rocco irritably. We’ve barely begun, he wanted to say, but settled for a vague, ‘Nothing yet. I’m checking in, that’s all. Keeping the paper shufflers happy. And I want to see what the pathologist says about the body.’