Creeping round a large boulder, Marcus froze as he heard a quiet exchange from the foot of the cliffs no more than fifty paces ahead.

‘Brixus and his lads took a hammering today,’ said the first voice. ‘I heard he lost over five hundred men.’

‘As many as that?’ another voice replied gruffly. ‘A hard blow for us. But harder for the Romans.’

‘How?’

‘You heard him. He said they fell right into the trap. They were lucky to escape being completely cut to pieces. Once word of Caesar’s defeat reaches Rome they’ll know we’re a serious threat, and they’ll have to consider our demands.’

‘You think so? If we really did win, then I doubt we could survive many more of Brixus’s so-called victories.’

‘Be careful. That sort of talk is dangerous.’

‘So’s being here. This ain’t turning out to be the great uprising we were promised when we joined up. I ain’t so sure I’m any better off here than when I was a slave. Leastways, I got fed and sheltered properly. Now, me guts is rumbling all the time and I’m so cold I can’t stop shivering.’

‘Quiet!’ his companion hissed. ‘You want everyone to overhear us? What if that Mandracus is doing the rounds, eh? If he heard you mouthing off like that he’d tear out your damned tongue. Now stop your whining and keep watch like we’re supposed to be doing.’

The other man grumbled incoherently and Marcus heard the crunch of nailed boots on pebbles as the two sentries slowly paced away from each other, keeping watch over the entrance to the gorge. Straining his eyes, Marcus could just see the outlines of the two men, wrapped up in cloaks and each carrying a round shield on one arm, while a spear rested on their shoulders. Scarcely daring to breathe, he crept closer. The sentries were standing either side of a gap in the cliff face, no more than ten feet across. Beyond, the opening to the narrow gorge was soon swallowed up by inky darkness. There was no way of reaching the gorge without the two rebels seeing him. Marcus forced himself to think through the problem. If he could not get past the men he would have to distract them somehow.

Reaching down, Marcus’s fingers groped among the pebbles on the dried-out water course until they closed round one the size of an egg. He hefted it to get some sense of its weight and shape, then hurled it to one side as far as he could. There was a brief silence before the pebble clattered off a rock at the base of the cliff. At once the two sentries turned towards the sound and the nearest of them lowered his spear.

‘Who’s there? Show yourself!’

When no reply came he glanced over his shoulder to his comrade. ‘On me, let’s go.’