Radulf and I both had the Divine Star, which made me think we had the same magic. The difference was that he understood his better. Or, more accurately, understood it at all, and that gave him a huge advantage over me. On the other hand, I had the bulla, which contained magic Radulf did not have. If I learned to use its powers, Radulf would have no answer to them.

So it was up to me to figure out the magic I already had, and for that, I had to know if Valerius was right, if there was magic in me apart from the bulla.

After listening to be sure the home was quiet, I removed the bulla and set it on the mattress, then stood and concentrated on the mark of the Divine Star. As I made myself conscious of it, the tingling was so sharp that I could almost define its shape just from which parts of my shoulder had come alive.

I focused on what I felt there, letting the mark smolder like a tired fire. Then I willed it to travel down my right arm, which still bore the injury from the soldier’s arrow. I felt the magic gather around the wound, but rather than create heat, as the bulla did, it felt more like water passing over and under my skin, soothing the sting there.

But the magic wasn’t finished. It breezed down my forearm and finally collected in my fingers and palm, so much that when I tried squeezing my hand into a fist, I felt resistance from the magic. It was similar to the feeling from the bulla, but this magic was waiting for me to act, rather than trying to escape without my permission. I felt the desire to release it from my fingers, but when I did, all that came was a brief snap of air, like an exhaled breath, and then it was gone.

The disappointment tasted bitter in my mouth. A casual whistle produced more power than I had created with the whole of my concentration. There was magic in me, but it was completely useless. If the bulla gave me far too much power, then the Divine Star offered too little.

Except that Radulf’s voice slithered into my head again. “So you’re experimenting with Caesar’s mark. I felt the shift in the air, you know, such as it was. And I will use it to find you.”

“I hope you do.” My voice shook when I spoke, not from fear, but from the fierce ache his presence created. “But you’ll regret the day you find me.”

He laughed, which rattled into my bones. “I doubt that very much. You see, I won’t come to reconnect a few mossy pipes. I will come with real power that you cannot fight, even with that bulla.”

I snatched the bulla and quickly put it back around my neck. Maybe Radulf wasn’t here, and didn’t have any way of getting at the bulla right now, but maybe he was. I wouldn’t take the risk.

Radulf had only one thing more to say. “Or you could join me, Nic. Help me build a new empire, one in which your life matters. That’s what your sister wants you to do.”

“Do you have her?” I cried. I raised my hands, ready for a fight if that was what he wanted. But how was I to fight someone who wasn’t even here? And how could I pretend to have any chance of winning?

Aurelia appeared in the doorway. “Who are you talking to?” At first, I barely looked at her. Radulf’s words still thundered inside my head, confirming my worst fears about Livia, and every suspicion I had about his evil nature.

“I have her,” he said. “But for how long? Don’t fight me, Nic.”

“Nic!” Aurelia called my name, her voice now filled with more obvious concern. I turned to her and drew in a breath of surprise. Aurelia had been given a long tunic made of fine linen, and her hair was freshly washed and fell in loose waves over her shoulders. She cleaned up even better than I would’ve guessed. “You’ve gone pale,” she said. “Are you all right?”

I wasn’t. Though my breathing was beginning to slow, my heart still pounded against my chest. Radulf wasn’t there any longer, but he’d left an echo of himself behind, like the chill that lingers after a storm.

Aurelia stepped even closer and put her hands on my face. “You’re in a cold sweat. Tell me what’s wrong.”

“No,” I said, backing away. “Tell me if I can trust you. Please, make me believe that I can, because every time I try, I think of our bargain, and I remember that all you care about is the reward you’ll get from Horatio.”

“That bargain is over.” The disappointment in her tone was obvious. “While you were talking with Valerius, he had Crispus pay me six hundred denarii, as his reward for bringing you here. He said they’d help you find your sister too, so I could leave if I wanted.”

I hardly dared asked the question. “And is that what you want?”

She shrugged and even smiled a little. “I should leave. If Rome were invaded tomorrow by barbarians carrying the plague, they’d still be less of a catastrophe than you are. Anyone who comes within a mile of you must be insane.”

I grinned. “If it helps to know, I’ve always thought you were insane.”

Despite her teasing, Aurelia’s tone turned serious. “To succeed, you’ll need a lot more insane friends than just me. Until you find them, how can I help?”

“I need to learn how to use the magic. And I need to know how to fight Radulf, because it’s going to come to that.” That thought sent shudders through me.

“Then I’ll stay. I’ll teach you everything I know, at least about fighting.”

“He could bring the entire forum down upon me. Can your knife stop that?” The corner of my mouth turned up a little.

She met my challenge with a spark in her eyes. “Until you control your magic as well as I control my knife, you shouldn’t complain. Now get some rest. It’ll be a big day tomorrow.” She glanced at the blanket I had used, still in a heap on the floor, and the undisturbed bed beside me. Her brows pressed together. “I hope you’re not sleeping on the floor.”

“Of course not.” Then I shrugged. “Maybe I was.”

She picked up the blanket and handed it to me. “That isn’t your life anymore. The world will judge you based on what you think of yourself. If you want to fight Radulf as an equal, then you had better think of yourself that way.”

“Do you think of us as equals?” I asked her.

“You and Radulf? He’s a general —”

“No. You and me.”

“Oh.” Aurelia’s eyes darted to the side, and her left hand was clenching her dress too tightly. “I, um —”

That was more than enough of an answer. I lay down on the bed, turning away from her. “Good night, Aurelia.”

She said my name, but I didn’t answer. Nearly a minute of silence passed before her footsteps padded out.

The following morning, Valerius had plans for me before I began any training. He sent a servant to scrub me, trim my hair, and, in his words, try to make me look like a “presentable Roman.” I wasn’t sure what that meant, but the haircut was definitely necessary, and the bath was a luxury beyond any I’d ever imagined possible. I had never had a bath before, but I was given the entire area of the senator’s tepidarium to use. It filled almost one whole room, with inlaid patterns of tile on the floor and walls, and marble seats built into the sides for people who wished to visit while they bathed. I stayed in it until my skin wrinkled, and even then I might never have left, except the servant told me the women of the household may be using the baths soon. That hurried me out.

Afterward, I was given a tunic almost as fine as Crispus’s toga. I ran my fingers along the smooth creases of neatly woven fabric, tracing the blue edging, and noting how odd it was to wear something that didn’t scratch my skin.

Crispus came in afterward, with a pair of sandals in his hands. Even after he held them out, it still took a moment to realize they were for me.