“Heard and witnessed,” Vasya said, and then she opened her hand. There was a thin line of blood on the meat of her thumb, black in the dim moonlight. She let her blood fall to the earth and two figures appeared. One was a man with one eye. The other was a woman with night-colored skin.

Dmitrii jerked backward; Sasha, who had seen them all along, stood still. Sergei’s eyes narrowed, and he muttered another prayer. “We have all witnessed your promise,” said Vasya. “And we will hold you to your word.”

DMITRII AND SERGEI, looking shaken, took their leave and rode back to their beds in Kolomna. Polunochnitsa said, “I have witnessed these men’s promises. Must I linger? I am not Medved; I do not love, endlessly, the strange doings of men.”

“No,” said Vasya. “Go if you wish. But if I call again, will you come?”

“I will come,” said Midnight. “If only to see the end. For you might have their promise, but you must keep your own now, and fight.”

She bowed and vanished into the night.

Sasha lingered with his sister. “Where are you going?”

She didn’t look up; she was throwing wet leaves over the fire. It went out with a hiss, plunging the clearing into gray starlight. “I am going to go find Oleg and take him back to his men,” said Vasya, straightening up. “See that word doesn’t get out that he was here; I am sure there are at least a few spies in Dmitrii’s camp. Although—” She smiled suddenly. “Who would believe it? He was with Mamai today and will be with him tomorrow.” She went to the golden mare.

Patiently, Sasha followed and said, “After that—then what do you mean to do?”

She had a hand on the mare’s neck. Looking over her shoulder, she countered with another question. “Where does Dmitrii mean to engage the Tatars?”

“They are bringing up their forces at a place called Snipes’ Field,” said Sasha. “Kulikovo. A few days’ march; Dmitrii must engage them before they finish gathering up their reinforcements. Three days, he says.”

“If you stay with the army,” Vasya said, “I will have no trouble finding it. I’ll come back to you in three days.”

“But where are you going?” her brother asked again.

“To harry the enemy.” She wasn’t looking at him when she said it. She was staring beyond him already, frowning into the dark. Pozhar, ears going back and forth, did not for once try to bite her.

Sasha caught her arm and spun her around. The mare shied irritably, blowing. His sister was scraped hollow with weariness, a fey glow in her expression. “Vasya.” He made his tone cold, an antidote to the reckless laughter lurking in her eyes. “What do you think will become of you, living in darkness with devils, and doing black magic?”

“I?” she shot back. “I am becoming myself, brother. I am a witch, and I am going to save us. Didn’t you hear Dmitrii?”