She pitied me because I followed behind in the clouds of dust that had been stirred up. She was perhaps ten years older than I, with a mass of black hair set into coils. Her eyes were dark with gold flecks. She might have been beautiful had she not been the devoted wife of an assassin, worn down by fear. Assassins should not marry, I decided then, or have daughters, or allow anyone to love them.

“Would you like to ride with my sons for a while?” Ben Simon’s wife suggested.

I could see she was tired, and I was used to walking. I thanked her and said no, I was happy to follow. I hoped she would leave me alone.

“I’m so glad to have you here,” she blurted. “Leaving would be so much worse without another woman beside me.”

I glanced at her, wondering what she wanted of me. She smiled, taking my hand, and then I understood. She wanted a friend.

I urged her to return to her sons. She should leave me to tread last, as I was invisible to most people, even without a cloak such as the one my father wore. Perhaps I had inherited that ability, or perhaps I had learned its secrets from watching my father. Either way, the Romans who searched for us would see only a swirl of dust wherever I walked.

Sia wouldn’t hear of it. “You’re wrong,” she remarked. “You would be the first one they’d see. Your hair is so beautiful it makes me think of flame trees.”

I wondered if her words were a curse, for I had been standing beside a flame tree when my brother admitted he was an assassin. It was not possible for her to know, but on those rare occasions when I dreamed of my mother, she came to me as a flame tree, and in my dreams I bowed my head before her and wept.

When I studied Sia, I could see that her intention was to be kind on a night pierced by danger and uncertainty. We walked close, drawn together by the peril around us. We were journeying through the Valley of Thorns, under a sky hung with so many stars they made me think of stones in the desert, countless, too white to look upon. They say the face of our Creator is like that, so bright that a single glance brings blindness. I kept my eyes downcast. I would have preferred to walk alone, but Sia set her pace with me, her arm linked through mine.