Astonishment raised Lord Matsudaira’s eyebrows. “A truce? Are you insane? And I didn’t attack you this morning.”

Infuriated by the denial, Sano said, “Your men ambushed my wife and tried to kill her. Or have you forgotten you sent them?”

Lord Matsudaira seemed as much confused as scornful. “I didn’t.” He pointed a finger at Sano. “It was you who just sent your men to kill my wife.”

Sano thought of what the sentries had said. Consternation filled him. “You’d better explain what happened.”

“Playing innocent, eh?” Lord Matsudaira’s face darkened with anger. “I suppose you came to gloat over what you’ve done. Well, all right, I’ll show you. Come.”

Beckoning, he stalked outside. His troops herded Sano’s party after him, into the garden. More troops patrolled amid azalea bushes in bright red bloom. Increasingly baffled, Sano followed Lord Matsudaira to the heart of the estate, a group of low buildings connected by covered corridors. One lay half in ruins, walls broken, the tile roof collapsed. The ruins were covered by black soot. Servants labored, cleaning up the mess.

“These are the women’s quarters,” Lord Matsudaira said, gesturing angrily. “My wife was inside. She has burns all over her. It’s a miracle she wasn’t killed. One of her attendants was.” He glared at Sano. “Don’t say it’s not your fault.”

“It isn’t,” Sano said, as disturbed as sincere.

“No more lies! Two of your men sneaked into this estate and threw jars of kerosene plugged with burning rags into the windows. My men caught them running away from the explosion. See for yourself.”

Lord Matsudaira led Sano to a blanket spread on the charred grass near the ruins. He flung back the blanket, exposing two young samurai who lay dead and bloody.

“They’re not mine. I’ve never seen them before in my life.” Sano turned to Hirata, Marume, and his other men; they shook their heads.

“You have so many retainers that you don’t know everyone who works for you,” Lord Matsudaira said. “Look at the crests on their clothes.” He pointed at Sano’s flying-crane insignias. “They’re yours, all right.”

Sano didn’t see any point in arguing; Lord Matsudaira would never believe him. “Well, I have two bodies of men that my troops caught and killed after they tried to stab my wife. They’re wearing your crests.”

“I had nothing to do with that,” Lord Matsudaira protested. “Whatever business I have with you, I would never attack your woman.” His tone scorned that as cowardly, dishonorable, beneath him. “This is the first I’ve heard of it.”

His shock and dismay seemed genuine. A familiar uneasy sensation trickled through Sano. He said, “This isn’t the first time that people on your side have been attacked and I wasn’t responsible, or that people on mine have been and you’ve claimed you weren’t.”

During the past six months, Sano’s troops had been ambushed, had been the target of firebombs and snipers. So had Lord Matsudaira’s. The frequency of the attacks had increased since Sano had returned from Ezogashima. Each rival had blamed the other, with reason based on evidence as well as motive. But Sano knew he wasn’t to blame, and he was ready to acknowledge that perhaps neither was Lord Matsudaira.

“Something is going on,” Sano said.

He’d had ideas about what it was, yet they remained unproven. Although he’d investigated the attacks, he’d found no substantiating clues as to the person behind them. He’d never mentioned his suspicions to Lord Matsudaira, who would only think Sano was trying to trick him.

“Of course something is going on, and I know what,” Lord Matsudaira said. “You’ve been faking attacks against yourself, to make me look bad and justify attacking me. Now you’ve violated protocol against attacking inside Edo Castle.” Lord Matsudaira bunched his fists and shook with fury. “Merciful gods, you’ll stop at nothing to destroy me!”

“The two of us should stop our quarrel,” Sano said, although he realized it was futile to hope he could convince Lord Matsudaira. “Agree to a truce. Then we can get to the bottom of these attacks and work out a peace treaty.”

“Take your peace treaty and shove it up your behind,” Lord Matsudaira said. “Now leave before I throw you out.”

As they glared at each other, Sano felt the war he wanted to prevent rushing on them like a tornado. The sensation was as exhilarating as it was dreadful. When he and his men turned to depart, Lord Matsudaira warned, “Remember that your home is a target, too.”

A servant came running up to them. “Excuse me, but I have an urgent message.”

“What is it?” Lord Matsudaira barked.

“The shogun wants to see you. And Chamberlain Sano. At once.”

The shogun received Sano and Lord Matsudaira in a courtyard of the castle, inside a gate normally used by servants. Loads of coal, hay, and timber surrounded him and the ten personal guards stationed in a tight cluster. Near them stood Yoritomo, the beautiful young samurai who was his favorite companion and lover. As Sano, Lord Matsudaira, and their entourages bowed to the shogun, he rubbed his frail hands together, and his gentle, refined features shone with excitement.

“Something, ahh, momentous has happened,” he announced.

Lord Matsudaira said under his breath, “It must be momentous indeed to lure you outside the comfort of your chambers.”

Sano knew that Lord Matsudaira hated being inferior to the shogun, that he envied the shogun his position at the head of the Tokugawa dictatorship. He thought it should belong to him, by right of his superior intelligence and strength. The strain of grasping at it had taxed his patience for dancing attendance on the shogun. These days he barely managed to hide his contempt.

“What’s happened, Your Excellency?” Sano asked politely.

“It had better be worth dragging me over here,” Lord Matsudaira muttered.

“There was a, ahh, big windstorm near the Inari Shrine in the hills this morning,” the shogun said. “It knocked down a big tree.”

“Why do we care?” Lord Matsudaira interrupted. “If there’s a point to this story, let’s get to it.”

The shogun narrowed his eyes at his cousin. Sano had noticed that the shogun appeared more nervous lately than usual, as if he sensed something was amiss. He didn’t know that Lord Matsudaira virtually controlled Japan, that Sano was contesting Lord Matsudaira, that the two were on the brink of war. No one had told him, and he was astoundingly unobservant. Furthermore, Sano and Lord Matsudaira enforced a nationwide conspiracy of silence because if the shogun did find out, the ramifications could tip the precarious balance of power. But even if he didn’t understand what was going on, he must have perceived that his cousin was the source of the trouble.

“When the tree fell, the roots, ahh, came up out of the ground,” the shogun continued, speaking slowly, deliberately annoying Lord Matsudaira. “In the hole was a human skeleton. It had been buried beside the tree, in an unmarked grave.” He gestured dramatically toward his guards. “And here it is!”

The guards parted to reveal an iron trunk. The shogun stood as far away from it as possible, avoiding the pollution of death. Yoritomo kept quietly to himself, avoiding attention. Sano understood why. Yoritomo was the son of the former, ousted chamberlain Yanagisawa. Although Lord Matsudaira had exiled Yanagisawa and his family, Yoritomo remained in Edo because the shogun had insisted on keeping him. The shogun’s fondness protected Yoritomo from Lord Matsudaira, who wanted to eliminate everyone connected to his onetime rival, but Yoritomo wasn’t taking any chances.

Sano and Lord Matsudaira gazed at the trunk, nonplussed. “Why are you so concerned about an old skeleton, Honorable Cousin?” Lord Matsudaira forced courtesy into his tone. “It probably belongs to some pilgrim who took ill and died at the shrine ages ago.”