'What?' Claudia asked.

'As I have said, Stathylus brought her down. She looked at the dead and cried. We celebrated. We found old Postulus hacked to bits, but of course we all kept quiet; technically we were guilty of mutiny. We burned his corpse as well. The reason we all agreed to it is that Stathylus had promised how, once we'd annihilated the Picts, we'd abandon the mile fort and march south to search out General Aurelian. Postulus had wanted to stay on the wall. Once he was dead, we'd won our great victory and were only too pleased to go.'

'What happened?' Murranus insisted.

'Well, as I've said, we celebrated. We had some wine and food. Stathylus lay with the Golden Maid. We heard her shrieks as he pleasured her. We'd camped outside the mile fort; next morning we found the Golden Maid had hanged herself from a beam inside.'

'Hanged herself?' Claudia asked.

'Shame.' Crispus spoke up. 'Because of her, her husband and his entire war band had been destroyed. She knew what would happen next. Stathylus would either sell her in the market or pass her on, so she'd taken a piece of rope and hanged herself.'

'You are sure she was dead?'

'I am certain. We burned her corpse and rode south, and that was the last time we ever saw that mile fort, the Picts or the Golden Maid. We became heroes, saviours, warriors. No one dared tell the truth. Strange,' Crispus mused. 'I always felt more guilty about Postulus than the Golden Maid.'

'I have asked this before,' Claudia said, 'but is it possible that someone from that Pictish war band survived?' Secundus shook his head.

'Impossible,' Crispus declared. 'We killed them all. Stathylus was insistent on that. He wanted to make sure that no one survived to describe how Postulus had been killed; that was very important. No Pict escaped, and as your friend said,' he pointed at Murranus, 'the battle took place at night. There was some torchlight, but even then our helmets and cloaks hid our faces. More importantly, it was eighteen years ago.'

'Have you searched?' Murranus asked. 'I mean, to see if there are Pictish slaves in Rome?'

'Of course there are,' Secundus sneered. 'Slaves from every tribe and country under the sun, but no one has ever approached us. Anyway, why now, after eighteen years?'

Claudia realised there were no further questions to be asked. She got to her feet, picked up her cloak and stared at the two veterans. 'We have to go. There is nothing we can really do at the moment, but I warn you of this, never be alone, never allow any woman to approach you. If you do that, you might survive!'

'Will you tell General Aurelian?' asked Crispus. 'I mean about Postulus?'

'I certainly think there's a need,' Claudia replied. 'Not immediately, but when I need him…'

'His blood is not on our hands,' Crispus declared stridently. 'We were not party to his death, that's why we kept the secret. Now Stathylus is dead, I don't mind if the truth comes out. We had no hand in Postulus' death.'

Claudia thanked both men, then she and Murranus went down the stairs and into the street. Darkness had now fallen. Shapes flittered across the mouth of an alleyway; strange sounds and cries filled the air. They walked down into the nearby square, where the mercenaries still lounged about; they'd fixed a cresset torch into the wall of a house and were sharing out a jug of wine. Across the square, a warlock dressed in a feathery black cloak was crooning above a bowl of fire; an old woman crouched next to him sprinkled some powder over the flame, making it leap and crackle. Voices shouted curses. Somewhere a child cried, followed by a woman's shrieking laugh. Claudia put her arm through Murranus' and drew him close. A whore came stumbling up clutching a lantern, which she raised. In the faded light her face looked repulsive: no forehead, a short podgy nose, nostrils dilated, mouth curled as she muttered a curse.

'What are you doing here?' she accused Claudia. Murranus pushed her aside, and immediately another figure lurched out of the darkness: a thickset man with an owlish, cunning face, huge slobbery mouth, fists ready to punch. He stopped, looked Murranus up and down and, grasping the woman by the hair, pulled her away. Claudia and Murranus walked on. The air reeked of the stale odours of cooking, fried fish, coarse bread and rancid meat-dripping. Musicians stood in a pool of light and with rebec and fife encouraged wild dancers, dark, shadowy figures, to whirl and turn. Claudia was relieved to approach the She Asses tavern. Murranus stopped just at the mouth of the alleyway leading down to it.

I've been thinking,' he murmured.

'Dangerous!' Claudia teased.

'No.' Murranus glanced down at her. 'We questioned those two veterans about that Pictish war band: has one survived, come to Rome, recognised his tormentors and decided to take revenge? However, there is another possibility: Postulus. Did someone close to him, a lover, a member of his family, discover he'd really been murdered by his own men?'

Claudia stood on tiptoe and kissed Murranus on the cheek. 'Yes, that is a possibility and one we must investigate.'

They continued down the alleyway into the square fronting the She Asses. Claudia glimpsed the two Vigiles, swords drawn, standing either side of the doorway.

'Oh no!' she moaned. 'Now what!' They hurried across. One of the Vigiles went to stop her then recognised her and stood back; he smiled at Murranus and waved them through the half-open door. Inside the eating room the captain of the Vigiles sat at a table with Poppaoe, Polybius and Apuleius; all three looked worried, whilst the captain appeared distinctly uncomfortable, as if something had happened that couldn't be bribed away.

'What's wrong?' Claudia walked towards them.

Polybius refused to hold her gaze.

'What's wrong, Uncle?'

'Tell her!' Poppaoe whispered, head down. 'You'd best tell her.'

'I won't just tell.' Polybius, much the worse for drink, staggered to his feet, swaying backward and forwards. 'Come with me.'

They climbed the stairs and went along the gallery to a guest chamber. Claudia's agitation deepened at the splinters of the wood lying outside. Something dreadful must have occurred. The door to the chamber had been forced, its bolts and clasps broken, shards of wood everywhere. Inside the small, narrow chamber, on a cot bed, sprawled the corpse of Theodore. One glance told her what had happened. The former actor looked ugly in death, his face podgy and white, mouth open, tongue sticking out, eyes popping.

'No!' Claudia groaned. 'Uncle, what happened?' She walked slowly across to the bed and felt the corpse's cheek,- it was cold, almost wax-like. She knelt down, pushing the corpse more securely on to the bed. Murranus helped her. She sniffed at the mouth and smelled nothing suspicious, but she could tell by the popping eyes, the rictus, the way the lips were forced back that Theodore had been poisoned. Death must have been fairly swift.

She got to her feet and turned round. Uncle Polybius stood in the doorway, one hand on the Vigiles' shoulder to steady himself.

'What you see is what we know,' Polybius pleaded. 'We were having such a marvellous celebration downstairs. The kitchen was doing a busy trade. Theodore left, saying he felt distinctly unwell, and came up here. I decided to invite him back down to keep an eye on him as you asked. So I came up, banged on the door, but he wouldn't answer. I got Oceanus to force it.' He gestured. 'It happened an hour ago, and now we've got trouble! I didn't ask him to come here, Claudia!'

'He's been poisoned.' Apuleius came up behind Uncle Polybius and forced his way through. 'Look around, Claudia.'

Claudia glimpsed the wine cup. It had rolled against the wall, a pool of wine around it. The stool next to the bed had also been knocked over as if Theodore had been lying on the bed and then become agitated, arms flailing, tipping over both the wine cup and the stool, trying to get himself up before collapsing back on to the bed.