"Where's the fat boy?"

Eduardo had read the files, seen the photographs and memorized the names. But just to be safe he'd had the serious-faced assistant at his office type out a list of everyone working at Maison Hafsid and then he'd read them off at the beginning, like doing a roll call at school. He knew who was missing. Ahmed, obviously. Also Hassan.

"Gone," Chef Edvard said flatly.

"Where?" Eduardo demanded.

"We don't know. He just didn't show up today. And he missed his shift at Café Antonio last Friday."

"Let me know if he appears," said Eduardo. "Okay, final question. Where exactly in the alley was Pascal Boulart's body found? I want each of you to show me in turn."

Back at his office desk, a plate of droits de Fatima lifted from Maison Hafsid already reduced to a blizzard of pastry flakes, the new Chief of Police drew up his own list of clues, using a fountain pen he'd found in the drawer.

Blunt knife, broken handle, rusty blade; no fingerprints; damaged door; empty corridor; clean steps. A body that changed position. And finally, most bizarrely, one misplaced murderer.

Eduardo drew circles around each and joined them together as he'd once seen Ashraf Bey do, but because his clues were written in a list one under the other, the links just sank, like lead weights on a fishing line. So Eduardo wrote his clues out again, arranging them in a circle and joining them with new lines. And then, because it looked so good, he wrote it out a third time, folding one copy to put in his pocket and leaving the other on his desk for everyone else to see.

It was only when Eduardo reached the end of the street, still surreptitiously brushing flakes from his pastry-stained fingers that he realized his detective work would go unappreciated. He was the boss. The only person remotely likely to go near his desk was Marie, who stood up every time he came into her outer office. She seemed far too nervous to take such liberties.

He'd just have to show his clues to Rose instead. Then he'd tell her the answer, maybe. Licking his fingers, Eduardo wiped them afresh on his trousers and went to buy Rose some chocolates. Somehow eating always made him hungry.

CHAPTER 41

Friday 11th March

"Your Excellency."

Given that someone had stolen all three door knockers, the barefoot Nubian in the white silk robe had little option but to hammer ever louder on the door of Dar Welham. As a method of attracting Ashraf Bey's attention it proved surprisingly unsuccessful, all but the final knocks being drowned out by the thud of ancient and unserviced fans inside.

Until he made his stop at Kairouan the previous week, Raf hadn't even realized he owned a house in Tozeur, let alone one in the oldest district; but the tall dar with its ochre, geometrically laid brickwork and dark interior had been a wedding present from the Emir to his mother, apparently.

Un présent de mariage.

Isaac & Sons' files were dust-buried on the shelves of their deserted walk-up when Raf and three uniformed officers cut the padlock on the rear and kicked in a door at the top of the stairs.

All it took was Raf presenting himself at Kairouan's Police HQ and demanding the loan of three good officers, bolt cutters and a hydraulic battering ram, one of the small handheld versions. His name alone had been enough to turn his wish list into reality. The officers were uniformed, respectful and obviously experienced. And the really terrifying thing, at least the thing that Raf found really terrifying was that at no point did anyone ask him for any form of identity.

He went looking for a wedding certificate and came back with copies of a deed of ownership, which did just as well. The date he wanted was at the top. While his mother's signature and that of Moncef were at the bottom. Fifty years earlier, on the day after they were married, Moncef had presented his mother with a house in Tozeur and another in Tunis. Fifty years . . .

Lady Nafisa, his aunt, had known this because it was for her that the copies were made by notario Ibrahim ibn Ishaq. Thanking the police officers, Raf had taken one copy of the deed and ordered the men to remove all other documents from the office and have them shredded, then burned. He made the most senior officer repeat that order, all documents, all shredded, all burned.

When Raf left to find Hani, Murad and the Bugatti, the officer was already radioing for backup while the other two had begun to arrange the files into dusty piles on the floor.

Dar Welham, his new house, stood behind the main road from the Palm Groves to Zaouia Ishmailia, on the right, halfway down an alley too old and narrow to merit a name. One side of his street had already been partly rebuilt using traditional yellow brick. Raf's side remained a mess of crumbling façades and locked doorways, with most of the houses obviously empty. Almost all of the triple door knockers, which allowed long-gone inhabitants to know if the person calling was a man, woman or child, had been stolen. As had a number of the old iron locks and the door handles themselves.

The private courtyard of Dar Welham still stank of cat's piss and sewage, although Raf had slopped it down at least three times and tipped buckets of rusty water through the open grilles of the drains. Hani and Murad had concentrated on the inside of the dar, sweeping floors and scrubbing at mineral deposits that had leached up through the floor tiles.

That the dar had electricity to drive its fans at all was a miracle. One involved twisted flex glued direct to rough walls and fed through a large hole into next door's cellar, where Raf jammed open the trip switch of a junction box with half a clothespin. Air-conditioning would obviously have helped. Although being somewhere other than Tozeur at the start of a khamsin wind might have been better.

Sand fall was expected. And Murad kept referring to a chili, alternating that word with khamsin. It had to do with a depression moving into the Gulf of Gebes. One that had kicked the afternoon temperature up to 98°F and threatened to drop sand as far north as Madrid. The local radio station talked about little else.

"Door," Hani said, looking up from a game of chess. She was winning five games to zero. The only way Murad had been persuaded to play again was her promise that this would be his last for the day and her assurance that he'd soon be good enough to beat her. But then, as Murad pointed out, she'd said that the day before as well.

At Hani's feet stretched Ifritah. Panting in the heat.

"What?" Raf put down the deeds to Dar Welham.

"Someone's at the door," said Hani. "I'd go but it's probably for you."

And it was. Apparently Kashif Pasha's messenger saw nothing odd in presenting an envelope featuring an ersatz version of a European coat of arms, one bearing a Western interpretation of an Othman turban, on a silver salver in the style of Napoleon III, overlaid around the edge with Quranic script in beaten gold, bronze and copper.

"Will there be a reply?"

Having read Kashif's message, Raf put it carefully in his pocket.

"No," he said, "I think not."

The Nubian might have come to the door of Dar Welham barefooted and dressed in a white robe but he drove off in a black four-by-four with smoked windows and roo bars big enough to knock down a buffalo.

"Who was that?" said Hani. She stood on the stairs with Murad behind her. A windup radio was in the boy's hand.

"Just one of Kashif Pasha's friends."

"My brother Kashif doesn't have friends," Murad said firmly, then paused, worried that he might have sounded rude. "I mean," he said more politely, "he has only allies or enemies." The boy's voice made no secret of which camp he'd found himself in. "What does the message say?"