Even with the red-haired giant leading us, I was dubious of the prospect of pressing through the crowded gateway and across the forecourt. Instead, he started off in another direction. We followed him down the street, past the fringes of the crowd to the foot of a narrow stairway tucked into the hillside beyond the outermost ring of marble terraces. The stairway was flanked by fig trees whose dense branches formed a canopy above.

"Are you sure this leads to the house?" said Eco suspiciously.

"Just follow me," said the giant gruffly, pointing ahead to a distant lamp at the top of the stairs. Without a torch to guide us, the way was dark and the steps lost in shadow. We mounted them cautiously, lagging behind the giant, until we arrived at a narrow landing. The lamp was hung above a wooden door. Beside the door stood another gladiator, who ordered us to leave our escorts outside and to remove our weapons. Eco produced a dagger and handed it over to one of his bodyguards. When I protested that I carried nothing, the red-haired giant insisted on searching me. Finally satisfied, he opened the door and led us inside.

We followed a long, dim hallway, descended a flight of steps, and at length emerged into a narrow room. We were in the foyer of the house, just inside the tall bronze doors, which were barred on the inside by a sturdy wooden beam. Through the doors I could hear the noise of the restless crowd from the courtyard beyond. "Wait here," the giant said, as he stepped through some curtains.