“There’s not much point,” Sano said. “What would he say except to deny he’s guilty and heap more slander on my mother? I have a better source of information about him. And I’ve just had an idea that I want to follow up, at home.”

Reiko sat in the room across the hall from the guest chamber. She waited until she saw Hana come out of the chamber and scurry down the passage, leaving Sano’s mother alone. Then Reiko picked up a tray that held a dish of pink cakes filled with sweet chestnut paste, her own favorite treat. She crossed the hall, quietly opened the door to the chamber, and entered.

Her mother-in-law was lying in bed, but when she noticed Reiko, she sat up. She awkwardly smoothed her rumpled gray hair and cotton robe. Her face showed alarm.

“Excuse me for disturbing you, Honorable Mother-in-law.” Reiko knelt and bowed. “I wanted to see how you are.”

“Much better, thank you,” the old woman murmured, her eyes downcast, avoiding Reiko’s gaze.

“I’m relieved to hear that.”

Reiko covertly studied her mother-in-law. In the light of what Sano had told her, she’d expected Etsuko to look different, to have gained stature befitting her samurai heritage. But Etsuko looked as ordinary as ever, although far from well. The only change was Etsuko’s manner toward Reiko. Usually timid, it now resonated with fright.

Wondering why, seeking to put Etsuko at ease, Reiko said, “I brought you some cakes,” and set the tray beside the bed.

“Thank you. You’re very kind. I’m sorry to impose on you.” Meek and contrite, Etsuko didn’t touch the food. She waited a moment, as if for Reiko to leave. When Reiko stayed put, she said, “You needn’t bother yourself with me. I’m sure you have more important things to do…?”

Reiko understood that her mother-in-law wanted to get rid of her, but she didn’t take the hint. “It’s no bother. I’m glad to have you with us.”

“I apologize for causing you so such trouble, Honorable Daughter-in-law,” Etsuko said humbly. “I beg your forgiveness.”

“There’s no need to apologize, nothing to forgive.” Yet Reiko experienced a stab of ill feeling toward Etsuko. The woman was, however inadvertently, the source of a serious threat to their whole family. Reiko thought of other wives she knew, whose mothers-in-law hated and insulted them, beat them and threw things at them. Those problems seemed trivial compared to Reiko’s, a mother-in-law who was accused of murdering a Tokugawa clan member, who could bring destruction upon all her kin.

Then Reiko felt ashamed of resenting Etsuko. The woman had always treated Reiko with respect, if not affection. She’d never done any ill as far as Reiko had firsthand knowledge to believe. Furthermore, she’d not deliberately endangered Reiko’s family. Lord Matsudaira was using Etsuko against Sano. If he didn’t have her, he would find some other weapon. Reiko pitied Etsuko, and she owed Etsuko all the aid she could give. That was her duty as a daughter-in-law, and in her own best interest.

She also owed Etsuko the benefit of doubt regarding the murder.

“Since you’re here, I welcome the opportunity to visit with you,” Reiko said, “even though it’s under difficult circumstances.”

“… Yes.”

This one word conveyed how averse Etsuko was to Reiko’s company and her acceptance of the fact that a guest must bow to her hostess’s wishes.

“My husband told me what happened,” Reiko began cautiously. She saw Etsuko fold her arms, shrink in bed. “I understand why you might not want to talk about it, but maybe I can help.”

Etsuko said nothing; she fidgeted with her bedcovers. Reiko wondered whether her mother-in-law knew that she helped Sano with his investigations. She’d never thought to ask. Reiko also wondered if Etsuko was aware of her suspicions, for she sensed that the woman was more intelligent than she’d previously thought.

“Have you remembered anything else since you talked to my husband?” Reiko asked. Sano hadn’t told her what he’d learned from his mother, but she would find out later, and she mustn’t waste time going over ground he’d already covered.

“No,” Etsuko murmured.

“Some things may be easier discussed between women, and between us rather than a mother and a son,” Reiko encouraged.

She’d hoped that Etsuko would talk about her family background, but Etsuko didn’t answer. And Reiko didn’t want to force the issue, lest she further strain their relations.

Changing tack, Reiko said, “What would help my husband clear your name is proof that you weren’t at the shrine near the time when Tadatoshi died. Can you think of anyone who can testify that you were someplace else?”

“There’s no one,” Etsuko said in a barely audible voice.

Did that mean she’d been alone someplace else, without witnesses to observe her, or that she had indeed been at the shrine? Reiko couldn’t help wondering. But the lack of an alibi didn’t necessarily mean Etsuko was guilty.

“Is there anything at all you can remember that might help my husband prove you’re innocent?”

“No,” Etsuko whispered.

“I see.” Reiko swallowed frustration. Her children’s fate depended on her mother-in-law’s; the least Etsuko could do was try harder to cooperate. “Is there anything that might get you in more trouble if it became known, that my husband should be prepared to counteract?”

“… No.”

Etsuko’s speech was often hesitant, but this time Reiko noticed that she’d delayed answering for a beat longer than normal. It could mean that Etsuko had paused to think, in the hope of recalling a forgotten fact, but it might mean that she was very well aware of some damning evidence that could resurface. But whatever the truth, Reiko realized that her mother-in-law was a tougher nut to crack than other suspects she’d met. Etsuko had shown her samurai blood, a hard core of resolve wrapped in her humble guise.

Yet Reiko still pitied Etsuko and still hoped desperately to exonerate her. This was no ordinary investigation. There would be no rewards for unmasking this suspect as a criminal.

Now Etsuko looked fatigued and weak. Reiko said, “Well, then, perhaps you’d better rest. We can talk some more later.” She counseled herself to postpone judgment about Etsuko, at least until more facts came to light.

Sano, Marume, and Fukida ducked under the blue curtain that hung across the entrance of a dingy public bathhouse. They paid coins to the attendant, accepted towels and bags of rice bran soap, and strode into a room enclosed by mildewed walls, where naked people scrubbed and poured buckets of water over themselves or lounged in the sunken tub amid clouds of steam. Edo bathhouses came in various types. Some were for families who didn’t have space for tubs at home. In others, illegal prostitutes of either sex serviced male customers. This one, Sano noted, appeared to be a haunt of disreputable men.

As he and his comrades walked among the bathers, he saw ronin with black stubble on their faces and shaved crowns; he passed gangsters covered with tattoos. Sano took care not to look too closely at anyone while he sought the man he’d come to find. A bathhouse like this was ostensibly neutral territory in which the patrons had a tacit agreement to do one another no harm, but they didn’t always stick to the agreement. Surly gazes flicked over Sano. He heard his name spoken quietly and saw Toda Ikkyu, master spy for the metsuke-the Tokugawa intelligence service-sitting in the tub. At least Sano thought it was Toda; the spy had such a nondescript face, perfectly suited to his work. Although they’d known each other more than ten years, Sano never recognized Toda at first glance.

“Looking for me?” Toda said.

The world-weary voice and expression were familiar. Sano crouched and said, “Your people told me I could find you here. I don’t suppose you came for the pleasure of it?”