'The prospect is no more appealing to me than it is to you,' rejoined Hortensius coldly.

'Now, now, Hortensius, don't take offence. I'd be honoured to act as your colleague in court. But let's not rush into their trap. Let's try to see if we can settle this matter without a trial.'

'How can it be avoided?'

'I'll go and talk to Caesar. Discover what he wants. See if we can reach a compromise.' At the mere mention of the word 'compromise', the three ex-consuls all started to object at once. Cicero held up his hands. 'He must want something. It will do us no harm at least to hear his terms. We owe it to the republic. We owe it to Rabirius.'

'I want to go home,' said Rabirius plaintively. 'Please can I go home now?'

Cicero and I left the house less than an hour later, the unfamiliar snow crunching and squeaking beneath our boots as we descended the empty street towards the city. Once again we went alone, which I now find remarkable to contemplate – this must have been one of the last occasions when Cicero was able to venture out in Rome without a bodyguard. He did however pull up the hood of his cloak to avoid being recognised. Even the busiest thoroughfares in daylight could not be counted safe that winter.

'They will have to compromise,' he said. 'They may not like it, but they have no choice.' He suddenly swore, and kicked at the snow in his frustration. 'Is this what my consulship is going to consist of, Tiro? A year spent running back and forth between the patricians and the populists, trying to stop them tearing one another to pieces?' I could think of no hopeful reply, so we trudged on in silence.

Caesar's home at this time stood some way beneath Cicero's, in Subura. The building had been in his family for at least a century and had no doubt been fine enough in its day. But by the time Caesar had come to inherit it, the neighbourhood was impoverished.