He looked serious. "I shall repay the debt."

"Perhaps!"

So they had eaten together, she and that big young man with the cheery chin. They ate, while the brother waited; then both licked their fingers and both rapturously sighed. They all laughed.

"Let me show you the way, lords," Caenis murmured, newly subdued as the sunlight of a different world filtered into the bleakness of her own. She led them into the corridor; they walked either side of her while she basked in their presence as she took them toward the public rooms.

"Thanks," they both said, in the offhand way of their rank.

Without answer she spun swiftly on the ball of her loosely slippered foot. She walked away as she had been taught: head up, spine straight, movement unhurried and disciplined. The grime and desolation imposed by her birth became irrelevant; she ignored her gray condition and was herself. She sensed that they had halted, expecting her to look back from the corner; she was afraid to turn, in case she saw them laugh at her.

Neither did. The senator, Flavius Sabinus, accepted their odd adventure quietly enough. As for his brother, he smiled faintly, but he did not mock.

He knew he should not attempt to see her again. Caenis had missed the significance, but he realized at once. It was like him; a swift assessment of the situation followed by his private decision long before any public act. He was due to leave Rome again, due to leave Italy, in fact. But all through his long journey back to Thrace, and afterward, Flavius Vespasianus still thought, What an interesting girl!

TWO

At dusk that same day, Caenis obeyed her instructions from Diadumenus, and went to check whether their mistress required her services. Washed and with her hair combed, she walked quietly, carrying a bound note tablet and her wooden stylus box.

The House of Livia lay adjacent to the Palace, convenient, yet still private when social distance was required.