'My mistress,' the eunuch began, 'does not resent your insinuations but she knows nothing about what you say. The hostage-taking, the destruction of veterans, what is that to her?'

'Then let her tell me about her former life in Britain. She came from the same province where these men served.'

'That's ridiculous!' Urbana cut in. 'Cassia cannot remember much. Moreover, we come from the Iceni in the eastern part of that province. We had no dealings with Picts.'

'Where were you last night?' Claudia cut in quickly. 'After dark, when the curfew had been proclaimed and the horn sounded.'

Cassia turned to Urbana, smiled and shrugged. Urbana glowered at Claudia. 'Are you insinuating,' she said, 'that we have anything to do with the death of that veteran in some stinking alleyway?'

'I didn't say that, Domina,' Claudia replied tactfully. 'I simply asked where you were.'

Urbana sprang to her feet and, with an irate glance at Claudia, walked away. She returned with a grey-haired, solemn-faced man whom Claudia immediately recognised as one of the chamberlains.

'Tell the lady your name,' Urbana urged. 'What is your name?'

'Why, Domina,' the fellow stuttered a reply, 'my name is Dimisces. I am a chamberlain at your husband's villa.'

'Tell this lady,' Urbana flung her hand out at Claudia, 'where we were last night.'

'Why, Domina,' Dimisces replied, 'everybody knows you were here, you and the Lady Cassia, from before sunset until the early hours. The Magdalena were also with you. You prayed, then you retired.'

'Thank you.' Urbana dismissed the chamberlain with a flick of her fingers and turned on Claudia. 'So, what further questions do you have to ask?'

Claudia, discomfited, excused herself and went to say goodbye to Murranus. He was in the palaestra with young Alexander, teaching him the rudiments of fighting with the short sword and square shield. Murranus, dripping with sweat, followed Claudia out into the cool colonnade, held her close and kissed her on the brow before turning away. He paused in the doorway, looked over his shoulder and grinned.

'Well, at least I'm not entering the arena!'

Claudia held up her hand in salute and went to the stables, where two of General Aurelian's slaves were waiting with a gentle cob. They left the villa, going along the winding path through the gates and on to the trackway which would lead them down to the main thoroughfare. The day's heat was dying, and soothing evening breezes had sprung up. Above the grass on either side butterflies floated. A thrush started to sing its clear liquid song, the sky was scored red, the lowing of cattle echoed rather sombrely from behind the fringe of trees; above it the sound of a child laughing and screaming carried on the breeze. The cob plodded sturdily along, the two escorts walking ahead, chattering amongst themselves. Claudia half dozed. On the way to the villa, she'd found the countryside familiar. She remembered that, as a young girl, her father had taken her, Felix and their mother along here, out into the countryside, simply to get away from the stench and heat of the city. She recalled those days and how her life had changed. Her father and her mother had become Christians but they had never made her convert. Claudia started awake and blinked. That was one thing she would remember them for: loving, ever-present, but never forcing their beliefs upon her.

She wondered if one day she and Murranus would come here with their children and sit under the shade of the outstretched branches of an oak tree to picnic, to immerse themselves in the ordinary, everyday things of life. Sometimes, on an evening like this, with the sun sinking in the west, the birds singing, the breeze fanning the sweat from her skin, she resented what she had to do, how she lived, the dangers that threatened her. Yet on the other hand, she could not suppress that feeling of excitement, that tingling, that sharpening of the brain as she waited to encounter some threat, some danger, in order to resolve a problem. She found it fascinating to observe, record and study human conduct, to pick at the loose threads and pull them free so that a whole tapestry of lies would collapse and reveal the truth behind. She often wondered if the attack and rape on her, coupled with the murder of her brother Felix, had unbalanced her wits, forced her soul to go in another direction. Nevertheless, she was now on that path, and she would journey along it as far as she could.

Claudia glanced up at the sky and wondered what would be awaiting her at the She Asses. Abruptly she heard a cry and reined in. The escorts had also stopped, shading their eyes and peering into the distance at the three figures, staffs in their hands, walking briskly towards them. One of the slaves carried a sword; he drew this from its scabbard but then his companion muttered something to him. The sword was put back and hands were raised in greeting as the retainers of General Aurelian recognised each other. Claudia, peering through the dust haze, realised that General Aurelian had been true to his word. The two veterans Crispus and Secundus had been summoned to the villa. They met where the trackway curved. At first the two veterans looked rather shamefaced, slightly apprehensive. Claudia greeted them and made to go on, but Crispus came up, grabbed the cob's halter and peered up at her.

'You told General Aurelian?'

Claudia stroked the neck of her cob and shrugged. 'I had no choice, he had to know.'

'We are innocent,' Crispus declared defiantly. 'We were not party to Postulus' killing.'

'I know,' Claudia replied, 'and so does General Aurelian.'

Secundus had a word with his escort and came over. 'We would like to talk to you,' he said. 'I mean, before we part.' He held up the leather bag he carried. 'We have some wine, it's ripe Campanian. General Aurelian sent it. We also bought some fresh bread from a bakery just near the city gate.'

Leaving General Aurelian's retainers to talk amongst themselves, Claudia and the two veterans settled in the shade of a tree overlooking a small pond covered in green slime. Dragonflies hovered above it and the dull buzz of bees hummed from the gorse which ringed the pool. They shared out the bread and passed round the wineskin. Claudia took two or three mouthfuls and handed it back.

'You wanted to talk to me?'

'It wasn't as we said,' Crispus mumbled between mouthfuls.

'What wasn't?'

'After the attack.' Secundus spoke up, wiping his mouth on the back of his hand. 'Once the massacre was over, Stathylus wanted to enjoy himself. We hunted the war band down in the heather, killed those in the fort and slung their bodies out, burned every single one, a stack of corpses piled like bloody wheat sheaves, but the chieftain was different. We spent the next day, or rather Stathylus did, torturing him. We crucified him against the wall and cut his flesh.

At first the man was brave, he kept his mouth shut, but, of course, everyone has their limits, and by the late afternoon he was screaming with pain, begging to die. Every one of us was a hardened soldier; we've done things, Claudia, you wouldn't dream of, but even we grew tired of it. Stathylus eventually cut the Pict's throat and that was the end of the matter.'

'What was worse,' Crispus took a generous sip of the wine, 'was that Stathylus brought the Golden Maid to watch what he called the "fun". She fainted at least twice and was roused to watch again.'

'Why are you telling me this?' Claudia asked.

'We agreed,' Crispus replied, 'that whatever happened at the wall, on that night and the following day… well, I've heard the stories about the Furies of Hades pursuing their quarry.'

'And what are the Furies here?' Claudia had to pinch herself. Here she was sitting in the shade of a lovely evening, the shadows lengthening, the birdsong clear, butterflies floating, the noise of the crickets in the grass, with two men describing a nightmare which occurred years ago on some lonely heathland beneath that great brooding wall in the north of Britain. Something happened that day which, as Crispus said, had released a hatred that prowled like some vengeful ghost seeking its quarry.