"Oh," she cried, jumping up in frustration, "men are impossible! Well, if he does not speak, you must find out somehow, and if he swears you to secrecy, you must find a way! If you are my friend, that is!"

Alarmed, Akitada rose also. He took her hands in his and looked down at her lovely, intense face. "You must be patient, little sister!" he said earnestly. "Of course I shall do my best to help your father."

Their eyes met, and he felt as if he were drowning in her gaze. Then she looked away, blushing rosily, and withdrew her hands. "Yes, of course. Forgive me. I know I can trust you. But now I must see about our dinner, and Father expects you." She made him a formal bow and walked away quickly.

Akitada stood and watched her graceful figure disappear around a bend in the path. He felt perplexed and troubled by the encounter. Slowly he walked towards the house.

The professor received him warmly in his study, a separate pavilion which was lined with books and looked out on a stand of bamboo, an arrangement of picturesque rocks and patterned gravel outside a small veranda. This room, where Akitada had worked on lessons with the professor, was as familiar to Akitada as any room in his own home. But the kindly man who had been a second father to him had changed shockingly. He looked prematurely old.

"My dear boy," Hirata began as soon as they had exchanged greetings and seated themselves, "forgive me for summoning you so abruptly when you must be very busy with official duties."

"I was very glad you invited me. This has always been a happy place for me and I have missed Tamako. She looks all grown-up and quite lovely."

"Ah, yes. I see she has already spoken to you." Hirata sighed, and Akitada thought again how tired he looked. The professor had always been tall and gaunt, with prominent facial bones made more severe by a long nose and goatee, but today there seemed more gray than black in his hair and beard, and deep lines ran from his nose to the corners of his thin lips. He said, "I am afraid I have been very unkind to the poor child, but I could not bring myself to burden her with the matter. Well, it seems it is beyond me to solve it, so I have presumed on our friendship to ask your advice."

"You honor me with your confidence, sir."

"Here is what happened. You may remember that one evening every month we gather for devotions in the Temple of Confucius? All the faculty wear formal dress on the occasion. Since we spend the day lecturing and teaching, we leave our formal gowns and headdresses on pegs in the anteroom of the hall in the morning and change into them just before the ceremony. Do you know the room I mean?"

Akitada nodded.

"I was in a hurry that evening, having been kept by a student, and simply tossed on my gown and hat and found my place in the hall. About halfway through the service I became aware of a rustling in my sleeve. I found a note tucked into the lining. Because it was too dark to read it there, I took it home with me."

Hirata got up and walked to one of the shelves. From a lacquer box he extracted a slip of paper and brought it to Akitada, his hand shaking a little.

Akitada unfolded the crumpled paper. The note was brief, on ordinary paper, and the handwriting was good but unremarkable. It read: "While men like you enjoy life, others do not have enough to fill their bellies. If you wish to keep your culpability a secret, pay your debts! I suggest an initial sum of 1000 cash."

Akitada looked up and said, "I gather one of your colleagues is being blackmailed."

"Thank you for that, my boy." Hirata smiled a little tremulously. "Yes. It is the only conclusion I could arrive at. I am afraid someone on the faculty has committed a serious… wrong, and another is extorting money in exchange for his silence. Apart from the shocking fact that two of my colleagues appear to be signally lacking in the very morals they are expected to inculcate into our students, it would be a disaster if the matter became public. The university is already in danger."

"You surprise me."

Hirata shifted uncomfortably. "Yes. We have been losing students to the private colleges, and our funds have been cut severely. A scandal could mean the closing of the university." He looked down at his clenched hands and sighed deeply. "I have spent every minute since the incident trying to think what to do. Now I have to pin my hopes on you. You are clever at solving puzzles. If you could identify the blackmailer and his victim, I might be able to deal with them in such a way that the university's reputation won't suffer."

"You may overestimate my poor abilities." Akitada spread the note out on the floor between them. "You did not recognize the handwriting?"

Hirata shook his head.

"No. I suppose not. It is not particularly distinguished. Yet the note is hardly an illiterate effort. 'Culpability' is a rather learned word. Could a student have written it?"

"I cannot say. Students never go into the anteroom. And it is true that the writing looks ordinary, but some of my colleagues are hardly great calligraphers. Besides, handwriting can be disguised."

"Yes. Hmm. One thousand cash is an impressive sum to the average person, and this is to be only the first payment. Whatever malfeasance is involved must be serious to be worth that price to the guilty man. What could be so damaging to one of your colleagues, and who could pay that much?"

The professor made a face. "I cannot imagine. It is certainly more than I can raise easily."

"What have you done so far?"

"Very little. I could hardly ask any of them if they have laid themselves open to blackmail." He passed a hand over his lined face. "It is terrible. I found myself looking at all of them with suspicious eyes and dreading every workday. Then, just when I was becoming completely distracted, I thought of you. I have known these men too long to see them with unbiased eyes. You, as an outsider, may have a clearer vision."

"But I can hardly start hanging about the university asking aimless questions."

"No, no! But there is a way. Of course you may not be able to take off the time, but we have an opening for an assistant professor of law. The incumbent, poor fellow, died three months ago, and the position has not been filled. The best part is that you would be my associate and we could meet on a regular basis without arousing suspicion. Could you take a short leave of absence and become a visiting lecturer? You would be paid, of course."

The image of his office at the ministry with its stack of bone-dry dossiers, and of the sour face of his superior, Minister Soga, flashed before Akitada's inward eye. Here was escape from the hateful archives, and an escape which promised the added incentive of a tantalizing puzzle. "Yes," he said, "provided the minister approves it."

Hirata's tired face lit up. "I think I can almost guarantee it. Oh, my dear boy, I cannot tell you how relieved I am. I was at my wits' end. If we can stop the blackmail, the university may limp along for another few generations."

Akitada gave his old friend and mentor a searching look. "You know," he said hesitantly, "that I cannot agree to suppress evidence of a crime."

Hirata looked startled. "Oh, surely… yes, I see what you mean. No, of course not. You are quite right. That is awkward. Still, it is better to take action to stop it. You must do as you see fit. I certainly don't know what is going on."

A brief silence fell. Akitada wondered if the professor had perhaps agreed too quickly. And had there not been the slightest emphasis on the word "know"? Finally Akitada said with a slight chuckle, "Well, I shall certainly do my best, but I am afraid that I shall be a very poor teacher. You must send me only your dullest students or our scheme will quickly come to ruin."

Hirata cheered up. "Not at all, dear boy!" he cried heartily. "You were my best student and have since acquired more practical knowledge of official duties than I have ever possessed."