Longinus stared at him closely.’Don’t try to mock me. I will not tolerate it . . . I understand that you have a certain document. One that you claim entitles you to dismiss the prefect I appointed, and to assume his office instead.’

‘That’s right, sir.’

‘In which case, I’d like to see it.’

‘Very well, sir.’ Macro indicated a small chest next to the desk. ‘If I may?’

‘Be my guest.’ Longinus leaned back in the chair as Macro strode over, lifted the lid of the chest and took out the leather case in which the scroll had been replaced to protect it. He flipped the lid back and extracted the document and then placed it on the desk in front of Longinus. The Governor casually picked up the parchment, unrolled it and scanned the contents. Then he placed it back on the table.

‘Well, Centurion Macro, and Centurion Cato, your credentials are impeccable. The document appears to be authentic, in which case you are fully within your rights to act as you did.’

Postumus, who had been watching with a faintly smug expression, started at this, and pushed himself away from the window frame.

‘Sir, I protest! You are the Governor of Syria, appointed by the Emperor himself. They have flagrantly defied the authority of your office!’

Longinus tapped his finger on the scroll.’By the terms of this document their authority supersedes mine. Therefore they have acted lawfully, and I’d be obliged if you’d shut up and wait until you are addressed from now on, Centurion Postumus.’

Postumus opened his mouth to protest, thought better of it and closed it. He nodded and stepped back awkwardly towards the window frame.

‘That’s better.’ Longinus smiled. ‘Now then, Centurions Macro and Cato, this is something of an unusual situation. It is not customary for officers of your rank to pop up in a far-flung province with the Emperor’s permission to act as you please tucked up your sleeve. So, I’d be grateful if you could explain what is going on here.’

Macro turned to Cato and cocked an eyebrow. It was an awkward situation.They had been sent from Rome to quietly investigate the Governor of Syria and their mission had been dogged by bad luck from the moment they had entered Jerusalem. If only Macro had not lost his original letter of appointment then this present situation could have been avoided. Instead, they had been forced to use the Imperial Secretary’s document and thereby reveal that they were acting directly on Emperor Claudius’ authority. Cato realised that there was nothing to be gained by denying the truth.

‘Sir,’ he said softly to Macro,’I think we’d better come clean.’

‘What?’ Macro shrank from the suggestion. How the hell could he just come straight out and tell one of Rome’s most senior officials that the Emperor suspected him of treason? ‘Are you mad?’