"When Stoichev told us he had one of Brother Kiril's letters, Helen and I looked at each other in amazement. 'What do you mean?' she said finally. "Stoichev tapped Turgut's copy with excited fingers. 'I have a manuscript that was given to me in 1924 by my friend Atanas Angelov. It describes a different part of the same journey, I am certain. I did not know that any other documents from these travels were in existence. In fact, my friend died suddenly just after he gave them to me, poor fellow. Wait - ' He rose, swaying in his haste, so that both Helen and I leaped up to catch him in case he fell. He righted himself without assistance, however, and went into one of the smaller rooms, gesturing for us to follow and to avoid tripping on the piles of books that lined it. There he scanned the shelves and then reached for a box, which I helped him take down. From it he pulled a cardboard file tied with fraying cord. He brought this back to the table and opened it under our eager eyes, drawing out a document so fragile that I shuddered to watch him handling it. He stood looking at it for a long minute, as if paralyzed, and then sighed. 'This is the original, as you can see. The signature - '

We bent over it, and there, with a rush of gooseflesh over my arms and neck, I saw an exquisitely penned Cyrillic name that even I could read - Kiril - and the year: 6985. I looked at Helen, and she bit her lip. The faded name of this monk was terribly real. So was the fact that he had once been as alive as we were, had set a quill to this parchment with a warm, living hand.

"Stoichev looked almost as awed as I felt, although the sight of such an old manuscript must have been his daily fare. 'I have translated it into Bulgarian,' he said, after a moment, and drew out another sheet, this one typed onionskin. We sat down. 'I will try to read it to you.' He cleared his throat and gave us a rough but competent version of a letter that has since been widely translated.

Your Excellency, Lord Abbot Eupraxius: I take my pen in hand to fulfill the task you have in your wisdom put upon me, and to tell you the particulars of our mission as we come to them. May I do justice to them and to your wishes, with God's assistance. We sleep this night near Virbius, two days' journey from you, at the monastery of Saint Vladimir, where the holy brothers have welcomed us in your name. As you have instructed, I went alone to the lord abbot and told him our mission in the greatest secrecy, with not even a novice or servant present. He has commanded our wagon to remain under lock in the stables within the courtyard, with two guards from among his monks and two from among our number. I hope we may meet often with such understanding and safekeeping, at least until we cross into the infidel lands. As you have instructed, I placed one book in the lord abbot's hands, with your injunctions, and saw that he hid it forthwith, not even opening it before me. The horses are tired after our climb through the mountains and we will sleep here yet another night after this one. We ourselves are now well refreshed by the services of their church here, in which two icons of the most pure Virgin have performed miracles as recently as eighty years ago. One of them still shows the miraculous tears she wept for a sinner, which are now turned to rare pearls. We have offered earnest prayers to her for protection in our mission, that we may safely reach the great city and even in the capital of the enemy find a haven from which to attempt our task.

I am yours most humbly in the name of the Father, the Son, and the Holy Spirit, Br. Kiril

April, the Year of Our Lord 6985

"I think Helen and I hardly breathed as Stoichev read this aloud. He translated slowly and methodically, and with no small skill. I was just about to exclaim aloud over the indubitable connection between the two letters when a thud of feet on the wooden stairs below made us all look up. 'They are coming back,' Stoichev said quietly. He put the letter away, and I placed ours with it for the time being, in his safekeeping. 'Mr. Ranov - he was assigned to you as your guide?'

"'Yes,' I said quickly. 'And he seems far too interested in our work here. There is a lot more we must tell you about our research, but it's rather private and also - ' I paused.

"'Dangerous?' inquired Stoichev, turning his wonderful old face toward us.

"'How did you guess?' I couldn't hide my amazement. Nothing we had said so far implied danger. "'Ah.' He shook his head, and I heard in his sigh a depth of experience and regret I couldn't begin to fathom. 'There are some things I should tell you, also. I never expected to see another of these letters. Talk to Mr. Ranov as little as possible.'

"'Don't worry.' Helen shook her head and they regarded each other for a second with a smile.

"'Quiet,' Stoichev said softly. 'I will take care that we can talk again.' "Irina and Ranov came into the sitting room with a clash of plates, and Irina began setting out glasses and a bottle of amber liquid. Ranov came behind her bearing a loaf of bread and a dish of white beans. He was smiling and he looked almost domesticated. I wished I could thank Stoichev's niece. She settled her uncle comfortably in his chair and made us sit down, and I realized that the morning's excursion had left me terribly hungry. "'Please, honored guests, make yourselves welcome.' Stoichev waved a hand over the table as if it belonged to the emperor of Constantinople. Irina poured glasses of brandy - the smell alone could have killed a small animal - and he toasted us gallantly, his yellow-toothed smile wide and genuine. 'I drink to friendship among scholars everywhere.'

"We all returned this toast with enthusiasm except for Ranov, who raised his glass ironically and looked around at us. "'May your scholarship advance the knowledge of the Party and the people,' he said, giving me a little bow. This almost took the edge off my appetite; was he speaking generally, or did he want to advance the Party's knowledge through something particular we knew? But I returned the bow and downed my rakiya. I decided there was no way to drink it except quickly, and the third-degree burn I received on the back of my throat was soon replaced by a pleasant glow. Enough of this beverage, I thought, and I might be in danger of liking Ranov slightly.

"'I am glad to have the chance to talk with anyone who is interested in our medieval history,' Stoichev said to me. 'Perhaps it would be interesting for you and Miss Rossi to see a holiday that celebrates two of our great medieval figures. Tomorrow is the day of Kiril and Methodii, creators of the great Slavonic alphabet. In English you would say Cyril and Methodius - you call it Cyrillic, do you not? We say kirilitsa, for Kiril, the monk who invented it.'

"For a moment I was confused, thinking of our Brother Kiril, but when Stoichev spoke again I saw what he had in mind, and how resourceful he was.

"'I am very busy with my writing this afternoon,' he said, 'but if you would like to come back tomorrow, some of my former students will be here to celebrate the day, and I can tell you more about Kiril then.'

"'That is extremely kind of you,' Helen said. 'We do not want to use too much of your time, but we would be honored to join you. Can that be arranged, Comrade Ranov?'

"Thecomrade did not seem to be lost on Ranov, who scowled at her over his second glass of brandy. 'Certainly,' he said. 'If that is how you would like to accomplish your research, I am happy to be of assistance.'

"'Very good,' Stoichev said. 'We will gather here at about one-thirty, and Irina will have something nice for our lunch. It is always a pleasant group. You may meet some scholars whose work you will find interesting.'

"We thanked him profusely and obeyed Irina's urging to eat, although I noticed that Helen, too, avoided the rest of the rakiya. When we had finished the simple meal, Helen rose at once and we all followed suit. 'We will not tire you further, Professor,' she said, taking his hand.

"'Not at all, my dear.' Stoichev shook her hands warmly, but I thought he did look weary. 'I shall look forward to our meeting tomorrow.' "Irina showed us to the gate again, through the green yard and gardens. 'Until tomorrow,' she said, smiling at us, and added something pert in Bulgarian that made Ranov smooth his hair down before putting his hat on again. 'She is a very pretty girl,' he remarked complacently as we walked to his car, and Helen rolled her eyes at me behind his back.

"It wasn't until evening that we had a few minutes alone together. Ranov had taken his departure after an interminable dinner in the bleak hotel dining room. Helen and I walked upstairs together - the elevator was broken again - and then lingered in the hall near my room, moments of sweetness filched from our peculiar situation. Once we thought that Ranov must be gone, we went back downstairs, strolled out to a caf¨¦ on a side street nearby, and sat there under the trees.

"'Someone is watching us here, also,' Helen said quietly, as we seated ourselves at a metal table. I laid my briefcase carefully across my lap; I'd stopped even setting it under caf¨¦ tables. Helen smiled. 'But at least this is not bugged, like my room. And yours.' She looked up into the green branches above us. 'Linden trees,' she said. 'In a couple of months they will be covered with flowers. People make tea out of them at home - probably here, too.' When you sit at a table outside like this, you must clean off the table first because the blossoms and the pollen fall everywhere. They smell like honey, very sweet and fresh.' She made a quick motion, as if brushing aside thousands of pale green flowers.

"I took her hand then, and turned it over so that I could see her palm with its graceful lines. I hoped they meant she would have a long life and good fortune, both shared by me. 'What do you make of Stoichev's having that letter?'

"'It might be a stroke of luck for us,' she mused. 'At first I thought it was only a piece of a historical puzzle - a wonderful piece, but how was it going to help us? But when Stoichev guessed our letter was dangerous, then I felt a great deal of hope that he knows something important.'

"'I hoped so, too,' I admitted. 'But I also thought he might mean simply that it was politically sensitive material, like so much of his work - because it involves the history of the church.'

"'I know.' Helen sighed. 'It might mean only that.'

"'And that would be enough to make him wary of discussing it in front of Ranov.'

"'Yes. We will have to wait until tomorrow to find out what he meant.' She laced her fingers through mine. 'It is agonizing for you to wait every day, isn't it?'

"I nodded slowly. 'If you knew Rossi,' I said, and stopped.

"Her eyes were fixed on mine and she slowly brushed back a lock of hair that had slipped out of its pins. The gesture was so sad that it gave full weight to her next words. 'I do begin to know him, through you.'

"At that moment, a waitress in a white blouse came out to us and asked something. Helen turned to me. 'What to drink?' The waitress looked curiously at us, creatures who spoke a foreign language.

"'What do you know how to order?' I teased Helen."'Chai,'she said, pointing at herself and me. 'Tea, please. Molya. '"'You're learning fast,' I said, when the waitress had gone back inside.

"She shrugged. 'I've studied some Russian. Bulgarian is very close.'"When the waitress had returned with our tea, Helen stirred it with a somber face. 'It is such a relief to get away from Ranov that I can hardly bear to think about seeing him again tomorrow. I don't see how we are going to do any serious research with him at our backs.'

"'If I knew whether he actually suspects anything about our search, I'd feel better,' I confessed. 'The strange thing is, he reminds me of someone I've met before, but I seem to have amnesia about who that is.' I glanced at Helen's serious, lovely face, and in that second I felt my brain groping for something, fluttering on the edge of some puzzle, and it wasn't the question of Ranov's possible twin. It had to do with Helen's face in the twilight, and the act of lifting my tea to drink, and the odd word I had chosen. My mind had fluttered there before, but this time the thought broke through in a rush.

"'Amnesia,' I said. 'Helen - Helen, amnesia.'

"'What?' She frowned at my intensity, puzzled.

"'Rossi's letters!' I almost shouted. I pulled open my briefcase so hastily that our tea slopped onto the table. 'His letter, his trip to Greece!'

"It took me several minutes to find the damn thing among my papers, and then to trace the passage, and then to read it aloud to Helen, whose eyes widened slowly to a shocked darkness. 'You remember the letter about how he went back to Greece - to Crete - after having his map taken away from him in Istanbul, and how his luck changed to bad and everything went wrong?' I rattled the page in front of her. 'Listen to this: "The old men in Crete's tavernas seemed much more inclined to tell me their two hundred and ten vampire stories than they were to explain where I might find other shards of pottery like that one, or what ancient shipwrecks their grandfathers had dived into and plundered. One evening I let a stranger buy me a round of a local speciality called, whimsically, amnesia, with the result that I was sick all the next day."'

"'Oh, my God,' Helen said softly.

"'I let a stranger buy me a drink called amnesia,' I paraphrased, trying to keep my voice down. 'Who the hell do you think that stranger was? And that's why Rossi forgot - '

"'He forgot - ' Helen seemed hypnotized by the word. 'He forgot Romania - '

"' - that he had been there at all. His letters to Hedges said he was going back to Greece from Romania, to get some money and attend an archaeological dig - '

"'And he forgot my mother,' Helen finished, almost inaudibly.

"'Your mother,' I echoed, with a sudden image of Helen's mother standing in her doorway, watching us leave. 'He never meant not to go back. He suddenly forgot everything. And that's - that's why he told me he couldn't always remember his research clearly.'

"Helen's face was white now, her jaw clenched, her eyes harsh and filling with tears. 'I hate him,' she said in a low voice, and I knew she did not mean her father."