"Thomas, where to?" I heard Helena's urgent whisper from somewhere ahead in the darkness.

"We have to go now," Thomas said, grabbing my hand. "You can make the decision on the way."

I followed him, feeling the rough calluses on his palm. Behind us, nearly a hundred prisoners shuffled through the narrow stone corridor, their footsteps creating a dull thunder in the confined space.

"Move left," Thomas called out softly, directing our massive group down a passage that curved away from the main ...