“It’s all right,” she said with a sigh of resignation. “I must hear.”

Hachiro nodded and began his tale. “Daiemon left the estate on horseback soon after the hour of the boar that night. He seemed in a big hurry. I had to ride fast to keep up with him, but I stayed far enough behind that he wouldn’t notice me.” Reiko envisioned one horseman shadowing another through the torchlit passages of Edo Castle. “He went into town,” continued Hachiro. “He rode around and around, looking over his shoulder, as if he wanted to make sure nobody was watching him. Finally, he ended up at the Sign of Bedazzlement. I knew the place because…”

The bodyguard paused, blushing unhappily. Reiko deduced that he’d recognized the house of assignation because he’d escorted Gosechi there to her trysts with Daiemon.

“Daiemon left his horse in an alley, then went into the building,” Hachiro said. “I was afraid to follow him in there because he might see me, so I watched from a teahouse across the street.”

“Did you see him meet a woman?” Reiko asked.

“No,” Hachiro said. “I had a drink and waited a few moments. Then I saw a samurai on horseback gallop down the street. He went by me so fast, I couldn’t see him clearly. I thought he was Daiemon. I didn’t know until the next morning that he’d never left the house alive. I thought maybe he’d decided not to stay, and he’d gone out a side door, gotten his horse, and was heading back to Edo Castle. I would have followed him, but just then a woman came out of the house.”

Hachiro squinted, peering into space, as he must have done while observing the woman emerge. “She was wearing a dark cloak, and a dark shawl that covered her head and face. She hurried over to a palanquin that was standing down the street. She climbed inside, and the bearers carried her away. I had a hunch that she was the woman Daiemon had come to meet.”

Reiko saw Gosechi close her eyes as if in pain: She must have been hoping desperately that her suspicions had misled her and there had been no other woman in Daiemon’s life. But Reiko was hoping the woman would turn out to be a valuable witness.

“I wanted to find out who the woman was,” Hachiro said, “so I got on my horse and rode after her.”

“Where did she go?” Reiko said eagerly.

“To Edo Castle. The guards at the gate let her right in. I followed her to Chamberlain Yanagisawa’s compound.”

Reiko felt shock and amazement catch her breath. She’d connected the chamberlain with the murder! The woman seen leaving the Sign of Bedazzlement must have been sent by Yanagisawa to assassinate Daiemon. Probably she wasn’t a woman at all but one of Yanagisawa’s men dressed in female garb. Yanagisawa must have found out that Daiemon was having an affair with Gosechi and where they went to tryst. He must have seen a perfect opportunity to strike at the rival faction.

“How did you and Daiemon arrange your meetings?” Reiko asked Gosechi.

“Whenever I knew that Lord Matsudaira would be busy and he wouldn’t want my company at night, I would send Hachiro to slip a piece of red paper under Daiemon’s door,” said Gosechi. The bodyguard hung his head, sheepish at his role as go-between. “I would travel that evening to the Sign of Bedazzlement. Daiemon would come to me.”

Yanagisawa must have learned their habit, Reiko deduced. A spy he’d employed in the Matsudaira house must have given Daiemon the signal to meet Gosechi that evening. Unaware that she was spending the night with Lord Matsudaira, Daiemon must have gone to the Sign of Bedazzlement expecting amorous pleasure, only to find Yanagisawa’s assassin lying in wait.

“Did you ever get another look at the woman?” Reiko said, although without much expectation that Hachiro had.

“Yes,” Hachiro said. “When her palanquin went in Chamberlain Yanagisawa’s compound, the guards were slow to shut the gate. I rode up and looked inside. There were torches lit in the courtyard. A little girl jumped out of the palanquin and ran off. A woman climbed out and followed her. That’s all I saw because the gate closed then. But I heard the woman call, ‘Kikuko, wait for me,’ and the little girl call, ‘Hurry up, Mama.’ ”

His words collided against a wall of disbelief and astonishment inside Reiko. Her heart began to thunder with excitement. As far as she knew, there was only one little girl named Kikuko who lived in Chamberlain Yanagisawa’s compound. And there was only one woman whom Kikuko called “Mama.”

It was Lady Yanagisawa who’d left the Sign of Bedazzlement soon after Daiemon had arrived.

“Merciful gods,” Reiko said as she clutched the wall for support.

“What’s wrong? Who is the woman?” Gosechi cried, her face avid with fearful curiosity. “I can see that you recognize her. I thought I didn’t want to know, but now I must, so I can see her and understand why Daiemon wanted her instead of me. Please tell me who she is!”

“I can’t tell you,” Reiko said, for innate caution warned her to keep her discovery to herself at least until she’d decided what to do about it. Fortunately, neither Gosechi nor Hachiro had guessed Lady Yanagisawa’s identity. Lady Yanagisawa seldom ventured into society, and few people knew that the chamberlain had a daughter because he was ashamed of her.

“But I can assure you that this woman wasn’t having an affair with Daiemon. She didn’t go to the Sign of Bedazzlement to make love to him.”

There could be no other explanation: Lady Yanagisawa had gone to assassinate Daiemon, on the chamberlain’s orders. Lady Yanagisawa had no lover to meet in secret. She cared nothing for any man except her husband. And she would do anything to please him.

A chill of horror descended upon Reiko. Lady Yanagisawa was even more mad, desperate, and cunning than Reiko had ever suspected. Blackmailing Reiko was the least of the evils that Lady Yanagisawa had recently done. She’d stabbed Daiemon to death, thereby ridding her husband of a rival, weakening the Matsudaira faction, and clearing the way for the chamberlain’s son to inherit the Tokugawa regime and become the next shogun.

Gosechi, Hachiro, and her surroundings faded from Reiko’s perception as she marveled at what Lady Yanagisawa had done. The sound of gongs and chanting barely impinged on her consciousness. Yet even though revolted by Lady Yanagisawa’s crime, Reiko realized that her own luck had turned. Exhilaration dazzled her, for Lady Yanagisawa had unwittingly rendered herself vulnerable to a counterattack.

“Thank you for your help,” she told Gosechi and Hachiro. “Excuse me, but I must go.”

She left them gazing after her in puzzlement and hurried out of the temple hall. Her palanquin and entourage waited amid the crowds in the precinct. As Reiko jumped into the palanquin, she ordered her bearers, “Take me to Edo Castle.”

There she would have her final confrontation with Lady Yanagisawa.