If Marcus was always going to be awkward in polite company, Julia herself was every bit the hostess. She wore a long stola over a long-sleeved shift, tied at the waist. The thick material of the stola, brightly colored blue and red, fell in heavy folds, and she wore a mantle over her shoulder, pinned in place with the wonderful dragon brooch. Not a hair seemed out of place, and to Regina she lit up every room more brightly than any number of bronze lamps or candlesticks.

As for Regina herself, she flitted through the rooms and the courtyard, where the oil lamps and candles glimmered like fallen stars. She was shadowed by Cartumandua, who was under strict instructions about the foods Regina could eat and what she could drink ( especially since the infamous incident of the barley ale). Everywhere Regina went people bent to greet her, the faces of the women thick with powder, the men greasy with sweat and the effects of wine or beer, but everyone smiling and complimenting her on her hair and her dress. She lapped up their attention as she recited her Latin verses or prayers to Christ, and danced to the bright music. One day, Regina knew, she would become a lady as grand and elegant as her mother, with her own retinue of slaves — none so clumsy and sallow as Cartumandua, she was determined about that — and she would be the center of attention at her own parties, every bit as lavish as her mother’s, perhaps even at this very villa. And as the evening wore on, she just wished she could somehow drag the sun back up above the horizon, to put off the dread hour of bedtime a little longer.

But then her grandfather pulled her aside. He took her out through the folding doors at the end of the dining room and onto the terrace, amid the rows of apple trees and raspberry canes. The tiled floor was crumbling, but the view of the countryside was beautiful. The sky was darkling, and the first wan summer stars were poking through the blue; she could just see the pale river of stars that, at this time of year, ran across the roof of the sky. Regina had learned that the Latin word villa meant “farm”: she could make out the silhouetted forms of the barn and the granary and the other outbuildings, and the fields where the cattle grazed during the day. In the rolling hills beyond the villa’s boundary, a single cluster of lights twinkled. It was a delightful night.

But Aetius’s face was stern.

Aetius was a big man, a slab of strength and stillness, out of place in this glittering setting. She had expected Aetius to come to the party wearing his armor. But he had on a simple tunic of unbleached wool, with strips of color at the hem and sleeves. He wore a soldier’s shoes, though, thick wooden soles strapped to his immense feet with strips of leather. Though he wore no weapon, Regina could see the scars cut deep into the muscled flesh of his arm.

Marcus had told her that Aetius had served in the field army, and had spent four years in Europe under the command of Constantius, a British military commander who had taken his army over the ocean so that he could make a play for the imperial purple itself. Constantius had been defeated. The field army was dissipated or absorbed into other units, and never returned — save for isolated figures like Aetius, who now served with the border forces. Marcus had muttered gloomily about all this, and the weakened state of the army in Britain. But Regina understood little, and had a sunnier outlook than her grumpy old father anyway, and she thought the story of Constantius was rather exciting. An Emperor from Britain! But when she asked about his adventures Aetius just looked at her, his pale gray eyes sunken and dark.

Now he crouched down on his haunches to face Regina, holding her small hand in one huge paw.

She stammered nervously, “What have I done wrong?”

“Where is Cartumandua?”

Regina glanced around, realizing for the first time that the slave girl was not in her customary place, a few paces behind her. “I don’t know. I didn’t get rid of her, Grandfather. It’s not my fault. I—”

“I’ll tell you where she is,” he said. “She’s in her room. Throwing up.”

Regina began to panic. Being told off by Aetius was a lot worse than any admonishment from her mother, and definitely from her father; if Aetius caught you, it really did mean trouble. “I didn’t do anything,” she complained.

“Are you sure? I know what you used to do,” he said. “You would make her run around in circles, until she was dizzy. Your mother told me about it.”

It was shamefully true. “But that was a long time ago. It must be — oh, it must be months ! I was just a little girl then!”

“Then why is Carta ill?”

“I don’t know,” Regina protested.

His eyes narrowed. “I wonder if I should believe you.”

“Yes!”

“But you don’t always tell the truth. Do you, Regina? I’m afraid you’re becoming a spoiled and willful child.”

Regina tried not to cry; she knew Aetius regarded that as a sign of weakness. “My mother says I’m a good girl.”

Aetius sighed. “Your mother loves you very much. As I do. But Julia isn’t always — sensible.” His grip on her hands softened. “Listen, Regina. You just can’t behave this way. Life won’t be the same when you grow up. I don’t know how things will be — but for sure they will be different. And Julia doesn’t always understand that, I don’t think. And so she doesn’t teach you.”

“Are you talking about Constantius?”

“That buffoon, among other things, yes—”

“Nobody tells me anything. I don’t know what you mean. Anyway I don’t care. I don’t want things to be different.”

“What we want makes very little difference in this world, child,” he said levelly. “Now, as to Carta. You must remember she is a person. A slave, yes, but a person. Did you know she has the name of a queen? Yes, the name of a queen of the Brigantes, a queen who may have confronted the Emperor Claudius himself.” The Brigantes were a tribe of the old days, as Regina had been taught, and it had been Claudius who had brought Britain into the Empire, long, long ago. “But now,” said Aetius, “that family of royalty is so poor it has had to sell its children into slavery.”

“My parents bought Carta for me.”

“Yes, they did. But Carta is still the daughter of a princess. And you’re lucky to have a slave attendant at all. Once there were slaves for everything. You would have a slave to call out the time for you — a human hourglass! But now, only your mother, and a few others, believe they can afford slaves. Anyhow you mustn’t hurt Carta.”

“But I didn’t.”

“And yet she is ill.”

Regina thought back and remembered how pale Carta had looked during Julia’s dressing. “But she was ill before the party. I saw her. Go ask her what’s wrong.”

“She was?” Still doubtful, Aetius released her hands. “All right. If you are lying, you know about it in your heart … Oh. ” His eyes widened, his huge head tilted back, and he looked up into the sky.

Startled, she looked up, too. It took her a moment to spot the light in the sky. It was right in the middle of the great band of stars — a new star, brighter than any of the others, flickering like a guttering candle. People drifted out of the villa, drink and food in their hands, and their chatter faded as they gazed up at the strange light, their faces shining like coins in the last of the twilight.

Despite the warmth of the evening, Regina suddenly felt cold. “Grandfather, what does it mean?”

“Perhaps nothing, child.” He folded her in his arms, and she pressed her slim warmth against his strength. She heard him mutter, “But it is a powerful omen, powerful.”