Prasutagus dealt with the other guard and then kicked open the gate. It was a thin affair, designed only to discourage access rather than resist a determined assault. The gate crashed inward and the handful of Druids still inside the enclosure turned at the noise, startled by the sudden invasion of their sacred soil by these painted men, their erstwhile allies. The momentary confusion had the effect Cato had hoped, and all his men were through the narrow gateway before the Druids began to respond. Snatching up spears, they made to defend themselves against the wild sword-wielding furies rushing down on them. Cato ignored the clash and clatter of weapons. He sprinted towards the cage. Ahead of him a Druid came out of a hut, spear in hand. He took one look at the melee and turned towards the cage, hefting his spear.

There was no mistaking his intent and Cato drove himself forward, running as fast as he could, teeth gritted with the effort. But the Druid was nearer, and Cato realised he was not going to make it. As the Druid reached the cage and drew back his spear to thrust, a shriek rose from inside.

‘Hey!’ Cato shouted, still twenty paces away.

The Druid glanced over his shoulder, and Cato threw his sword with all his might. As the blade spun through the air, the Druid whirled round and deflected it with the end of his spear. Cato ran on towards the cage. The Druid lowered the point, aiming it at Cato’s stomach. At the last instant, almost on the point of the wickedly barbed tip of the spear, Cato threw himself down and rolled into the Druid’s legs. Both men crashed against the wooden bars of the cage. The impact was worse for Cato than the Druid, and before he could catch his breath the man had jumped on his chest and clamped his hands round the optio’s throat. The pain was immediate and intense. Cato snatched at the man’s hands, straining to pull them away, but the Druid was big and powerfully built. He grinned through yellowed teeth as he squeezed the life out of his enemy. Black shadows smeared the edges of Cato’s vision, and he lashed out with his knees, striking uselessly on the man’s back.

A pair of slender hands reached out between the cage bars and clawed at the Druid’s face, fingers working for the man’s eyes. Instinctively, he threw his hands up to save his sight, howling in agony, and Cato drove his fist up into the man’s chin, snapping his head back. Cato struck him again, then heaved him aside. While the Druid lay stunned on the ground, Cato scrambled up, retrieved his sword and thrust it into the Druid’s throat.

He turned to the cage. ‘Lady Pomponia!’

Holding the bars, her face squeezed against her hands; the general’s wife looked at the painted figure uncertainly.