Everything has its source, of course. The son of a fisherman who drowned at sea, Lorenzo Quart was taken under the wing of a rough village priest who helped him enter the seminary. A brilliant and conscientious student, to such an extent that his superiors took an interest in his progress, Quart was possessed of that southern clarity of mind that is like a quiet affliction sometimes brought on by the easterly winds and blazing Mediterranean sunsets. One day, as a child, he stood for hours on the breakwater of the port, lashed by wind and rain, while out to sea some helpless fishing boats fought the huge waves. In the distance they looked tiny and pitifully fragile in the mountainous foaming seas, their motors struggling to bring them back to port. One boat had been lost. And when one fishing boat was lost, that meant sons, husbands, brothers, fathers were lost along with it. Women in black with children clinging to their skirts stood by the lighthouse, moving their lips in silent prayer, trying to make out which boat was missing. And when the little boats finally entered the port, the men on board looked to where Lorenzo stood on the breakwater, clasping his mother's hand, and they took off their caps. The rain, the wind, and the waves roared on. No more boats returned. That day, Quart realised that it was no use praying to the sea. And he vowed that no one would ever stand in the rain waiting for him to return to port.

The church door, made of oak and decorated with thick nails, was open. As Quart went inside, a cold breath of air came to meet him, as if he'd just lifted a gravestone. He took off his sunglasses and dipped his fingers in holy water. He felt its coolness as he made the sign of the Cross on his forehead. The gilded altar gleamed gently at the other end of the nave. Half a dozen wooden pews sat facing it. The rest had been piled in a corner to make room for the scaffolding. The place smelled of wax, stale air and the mildew of centuries. The entire church was in gloom, except for the top left-hand corner, lit by a spotlight. Quart looked up at the light and saw a woman on the scaffolding, photographing the leaded windows. "Good morning," she said.

Her hair was grey, but unlike Quart's not prematurely – she must have been well over forty, he thought as she looked down from the scaffolding. Holding on to the metal poles, she climbed nimbly to the ground. She had her hair in a small plait and she wore a polo shirt, jeans covered in plaster, and trainers. From behind she could have been a young girl.

"My name is Quart," he said.

The woman wiped her right hand on her jeans and gave him a firm, brief handshake. Her hand felt rough. "Gris Marsala. I work here."

She had an American accent. Her eyes, edged with lines, were bright and friendly, and her smile was easy and open. She looked him over curiously.

"You're a good-looking priest," she said at last, forthright. Her gaze rested on his dog collar. "We were expecting someone rather different."

"We?"

"Yes. We've all been waiting for the envoy from Rome. An anonymous little man in a cassock, with a briefcase full of missals and crucifixes."

"Who is all?"

"I don't know. All of us." She started counting on her plaster-covered fingers. "Father Priamo Ferro, the parish priest. His assistant, Father Oscar. The archbishop, the mayor, and quite a few others." Quart tensed his mouth. He hadn't realised his mission would be public knowledge. He thought the IEA had informed only the nunciature of Madrid and the archbishop of Seville. The nuncio wouldn't have told anyone, but Quart could well imagine the archbishop, Monsignor Corvo, spreading rumours. Damn His Grace.

"I wasn't expecting such a reception," he said coldly.

The woman shrugged, ignoring his tone. "It's not over you, but the church." She gestured at the scaffolding, the paint on the blackened ceiling coming away between patches of damp. "This church has aroused a lot of strong feeling lately. And nobody in Seville can keep a secret." She leaned towards him slightly and lowered her voice, parodying a confidence. "They say even the Pope is giving the matter his attention."

Dear God. Quart was silent a moment, his gaze on his shoes. Then he looked into the woman's eyes. This was as good a time as any to start untangling some of the threads, he thought. So he moved closer until he was almost touching her shoulder and looked round with theatrical suspicion.

"Who says so?" he whispered.

Her laughter was relaxed, like everything else about her. "The archbishop of Seville, I think," she said. "By the way, he doesn't seem to like you much."

I must be sure to repay His Grace's kindness at the first opportunity, Quart thought. The woman watched him mischievously. He was reluctant to be as open as she was, so he just raised his eyebrows with the practised innocence of a Jesuit. He had in fact learned the gesture from a Jesuit, at the seminary.

"You're very well informed. But you shouldn't believe everything you hear."

Gris Marsala laughed. "I don't," she said. "But the rumours amuse me. Anyway, as I said, I work here. I'm the architect in charge of restoring the church." She looked round again and sighed. "Doesn't say much for my skills, docs it? But it's been one long sorry tale of estimates not being approved and money not coming through."

"You're American, aren't you?"

"Yes. I've been working here for two years. I was appointed by the Eurnekian Foundation. It put up a third of the money for the initial restoration project. At first there were three of us working here, two

Spaniards and mc, but the others left… The work more or less ground to a halt some time ago." She looked at him to see what effect her next words would have. "And there were the two deaths, of course."

Quart showed no reaction. "You mean the accidents?"

"You could call them that, yes. Accidents." She was still watching him closely and seemed disappointed when he said nothing more. "Have you met the parish priest?"

"Not yet. I arrived only last night. I haven't even seen the archbishop. I wanted to see the church first."

"Well, here it is." She waved her hand, indicating the nave with the high altar at the end, barely visible in the gloom. "Seventeenth-century baroque, with an altarpiece by Duque Cornejo… A small treasure that's falling to pieces."

"And the headless Virgin at the door?"

"Some citizens of the town chose to celebrate the proclamation of the Second Republic in 1931 in their own special way." She said it kindly, as if deep down she forgave the vandals. Quart wondered how long she'd been in Seville. Definitely quite some time. Her Spanish was perfect and she seemed very much at ease.

"How long have you lived here?"

"Nearly four years. But I visited the city lots of times before I settled. I came on a scholarship and never really left." "Why not?"

She shrugged. "I don't know. It happens to a lot of Americans, particularly young ones. They come here, and then they just can't leave. They stay and scrape a living somehow, playing the guitar or sketching in the squares." She looked thoughtfully at the patch of sunlight on the floor by the door. "There's something about the light here, the colour of the streets, that saps your will. It's almost like an illness."

Quart took a few steps up the nave and stopped. On the left the pulpit with its spiral staircase was half-obscured by scaffolding. The confessional was on the right, in a small chapel that led to the vestry. He ran his hand over one of the wooden pews, blackened with age.

"What do you think of the church?" she asked.

Quart looked up. A barrel vault inset with lunettes rose above the single nave and the short-armed transept. The elliptical dome, surmounted by a blind lantern, was decorated with frescoes that had been almost completely obliterated by smoke from the candles and by fire. Around the edges of a large soot stain he could just make out a few angels, and some bearded prophets covered with patches of damp that made them look like lepers.