Septimus walked with Syrah through the sand dunes and up onto the rock-strewn grass. He had a heavy feeling in the pit of his stomach, and he knew why. It wasn't the fact that he was headed off to an unknown danger -  that he could handle. What he found harder to deal with was the fact that he no longer knew what Time he was in. Syrah set a fast pace over the rocky grass, heading toward the steep hill that rose up in the center of the island. Septimus had to almost trot to keep up with her. At the foot of the hill was a more defined path, which wound its way up through scattered rocks. It was wide enough for only one person, and Syrah went ahead, leaping up the path with the practiced ease of a mountain goat. Septimus followed more slowly. Halfway up the hill, Septimus stopped and turned around, hoping to see Spit Fyre, but the dragon was already hidden by the sand dunes. He caught his breath and then continued toward Syrah, who was sitting waiting for him, perched on a rock and as still as a rock herself.

Septimus walked on slowly, trying to figure things out - was Syrah in his Time or was he in her Time? He wondered if Syrah was a spirit; but she didn't look much like one - in fact she looked exactly how he would have expected someone who had been stranded on an island to appear - thin and sunburned, her clothes threadbare. As Septimus drew near, Syrah pushed her straggly brown hair back behind her ears and smiled at him just, he thought, like a real girl would. At her feet a spring bubbled from between some flat, mossy rocks, and Septimus got a sudden attack of goose bumps - this was the very spring he had so vividly imagined as he had flown over the islands. Syrah pulled a battered tin cup from between the rocks and allowed the water to trickle into it. She offered it to Septimus as he sat down on the rock beside her. He drank the water in one gulp. It was icy cool and tasted a hundred times better than the warm, slightly metallic stuff from the WaterGnome.

After three cups of water Septimus felt much more clearheaded. "When you Called me, you were sitting right here," he said.

Syrah nodded. "I was. It is my favorite place on the whole island. That morning I looked up, I saw your dragon and I Knew it was you. And I knew if it was you, you would - maybe - still have the Keye."

"But... how did you know it was me?" asked Septimus. Syrah looked surprised. "All Apprentices Know one another," she said. She looked at his Senior Apprentice stripes, which, after the ravages of the storm and Spit Fyre's tail operations, no longer looked new and shiny. "I am surprised Julius has not taught you this yet, but he will. He is such a good tutor, is he not?"

Septimus did not answer. He could not bear to think that he might have slipped back into Syrah's Time. He jumped up, desperately hoping to get a glimpse of Jenna and Beetle, telling himself that if he could see them, everything would be fine. But there was no sign of them, and an awful feeling of being alone on the island, marooned once again in a different Time, swept over him.

Syrah was gazing out to sea contentedly, unaware of Septimus's near panic. "I am never tired of this," she murmured. "I may be tired of everything else, but not this."

Septimus looked at the scene spread out below him. Four small islands of green, flecked with gray rocks and edged with delicate white slivers of beaches, were strewn carelessly through the sparkling green-blue sea. He knew from his flight over the islands that there were two more little islands on the other side of the hill, making seven islands in all. It was breathtakingly beautiful, but all he could think was, What Time is it?

Syrah stood up. Shading her eyes, she looked toward the CattRokk Light. "This morning they took the Light," she said. "And so I came to you. It is beginning."

Septimus did not reply. He was completely preoccupied trying to pinpoint a moment when he could have possibly slipped back into Syrah's Time. Was it before or after Jenna and Beetle left to go fishing? Were they in this Time with him or not? The more he thought about it the more his head spun.

"Syrah," he said.

"Mmm?"

"How did you get here?"

"On a dolphin."

"On a dolphin?"

"It is a long story. Let me give you some advice, Septimus. If you get Drawn to go on the Queste, escape while you can."

"Yes, I know. And that is what I did," Septimus replied quietly.

"You did?"

"It is also a long story," he replied in turn.

Syrah regarded Septimus with new respect; there was more to this young Apprentice than she had thought. She reached into a pocket in her tattered tunic and took out a small, water-stained book. The cover was made of faded blue cloth and was decorated with hand-drawn signs and symbols, most of which Septimus did not recognize. In large gold letters across the front was written:

"It was a ship's logbook," said Syrah. "I found it washed up on the shore. It has been my only true companion on this island, and in it I wrote my story, so that I could remember who I am - and who I was. It explains everything. Take it, please, and give it to Julius when you return. I wrote it for him, too.

Septimus looked at the names on the cover. "So...are you called Syrah or Syren?" he asked.

"Out here I am Syrah."

"Out here?" asked Septimus.

"Read it," said Syrah, "and you will understand. Later," she added as Septimus began to lift the fragile cover. "Now we must go."

The path widened after the spring, and Septimus walked beside Syrah toward the wooded crest of the hill. As they neared the top, Syrah turned to him and said, "What I am asking you to do is not for me, it is for the Castle. And I think that if you knew what it is, you would insist on doing it anyway." She looked at Septimus, her green eyes squinting against the sun shining behind him, giving his hair a fuzzy golden halo. She smiled. "Yes," she said. "I am sure you would."

"Well, if you're so sure, why don't you tell me?" asked Septimus.

"I cannot."

Septimus began to feel annoyed. "Why not?" he said. "If you want me to do this dangerous thing, I think the least you could do is tell me what it is and not play games with me."

"Because if I tell you, you will know. And if you know, then the Syren will know - "

"The Syren?" asked Septimus. He glanced down at the name on the book: Syren - the name after Syrah's name. Syren -  the name that had replaced Syrah's name. A chill ran down his spine; he was getting a bad feeling about the island. Septimus lowered his voice. "If you cannot tell me what I am to do, then at least I must know what I am dealing with. Who - or what - is Syren?"

They had now reached the edge of the trees at the top of the hill. "Very well," said Syrah. "But before I tell you about the Syren, I must know one thing: Can you do a MindScreen? If you cannot, then please believe me, it is better you do not know right now."

But Septimus could indeed do a MindScreen.

He well remembered the day that Marcia had taught him. From the moment he had emerged from tidying the Pyramid Library the day had taken on a surreal quality. Everything he said or did, Marcia had anticipated. She had finished his sentences for him, answered his unasked questions, fetched a book for him that he was about to go and find and had played countless other little tricks. By the end of the morning Septimus had felt as if he were going crazy -  how did Marcia know what he was thinking and what he intended to do?

Marcia then insisted they eat lunch together, rather than Septimus going down to the Wizard Tower canteen as he usually did. Septimus had sat in the little kitchen and eaten in silence, refusing to be drawn into conversation. He had concentrated hard on everything on the table and had focused totally on every morsel of the rather good Wizard Tower Hotpot-of-the-Day that Marcia had had sent up. When he saw Marcia looking at him with a faintly amused smile, he did not look away but tried to put up a mental screen between his eyes and hers, thinking only of mundane things. By the end of dessert - Wizard Tower Chocolate Pie with Sparkles - Marcia was beaming. She put down her spoon and clapped her hands. "Well done, Septimus," she had said. "I used all my powers of Reading, and not only did you work out what I was doing, but you also worked out how to Screen me. Very good! You have mastered MindScreen Stage One all on your own. We will spend the afternoon on Stage Two - making your MindScreen undetectable. If you manage that we will do Stage Three - allowing you to use decoy thoughts, which will always give you the upper hand." She had smiled. "Then you will be protected against any nosy Being or Wizard - including me." The afternoon had progressed well and Septimus had reached Stage Three, although at times his decoy thoughts had made his Stage Two break down, which Marcia had said was always a problem with a beginner but would improve with practice.

"Yes." Septimus smiled. "I can do a MindScreen."

"Good," said Syrah, then like an animal diving into its burrow, she plunged into the trees and disappeared. Septimus followed and found himself momentarily blinded by the shadows after the bright sunlight. He set off after Syrah with some difficulty. Despite being windblown and stunted, the little trees grew close together and were covered with tiny, tough, fleshy leaves that snagged and cut at him as he pushed through. The trees grew in twisted corkscrew shapes, which reached out in unexpected directions as though to deliberately trip him up, but Syrah deftly zigzagged through, dappled shadows falling on her threadbare green tunic. She seemed to Septimus like a small woodland deer, jumping here, leaping there as she followed a path that only she knew. Syrah stopped at the far edge of the copse and waited for Septimus to catch up. As she stood silhouetted against the bright sunlight, Septimus noticed how extremely thin she was. Her threadbare tunic hung from her like a rag on a scarecrow, and her thin brown wrists and ankles emerged from the ragged hems like knobby sticks. She reminded him of the Young Army boys who would not eat - there had always been one or two in each platoon, and they had never lasted long. What, he wondered, had Syrah's life been like on this island?

Septimus joined Syrah at the edge of the trees. In front of them in the bright sunlight was a wide, open cliff top jutting out to sea like the prow of a ship. A great panorama of sea was stretched beyond, interrupted only by a squat, round brick tower that had a ring of tiny windows right at the very top. Syrah put her arm out to prevent Septimus from stepping out of the cover of the trees. She pointed to the tower and whispered, "This is the Peepe. It is the Dwelling Place of the Syren." Syrah paused. She took a deep breath and said, "The Syren is a Possessive spirit. I am Possessed by her."

At once Septimus understood the cover of the book. Guiltily he felt a surge of happiness wash over him -  he was still in his own Time. He remembered the words from Dan Forrest's Basyk Treatise on Possession: "The curse of the Possessed is to exist for many hundreds of lifetimes without the knowing of it. It is a form of immortality that none desire."

Instinctively Septimus stepped away from Syrah - Marcia had always said that it was not good to be close to someone who was Possessed.

Syrah looked upset. "It is all right," she said. "You can't catch anything. I am only Possessed inside the Peepe. As I said, outside I am Syrah."

"So why go into the Peepe at all?"

Syrah shook her head. "When the Syren Calls me, I must come. Besides..." She yawned. "Oh, excuse me, I am so tired. I stay awake outside for as long as I can, but the only place I may sleep is inside the Peepe."

Now Septimus remembered something that Dan Forrest's Basyk Treatise had not covered - something that he had found in a crumpled scroll at the back of the drawer in the Pyramid Library desk. It was written by a young ExtraOrdinary Wizard who had become Possessed by a malevolent spirit Dwelling in a cottage alongside Bleak Creek. The Wizard had made it back to the Wizard Tower and had been writing his will, at the beginning of which were the words: "It has been four long days since I walked away from my Possessor. I choose not to return, and I know I must soon face the final Sleep."

There followed a description of what had happened to him, along with detailed instructions to his successor, a list of bequests and a last message to someone he described as "his one true love," which ended in a long trail of ink where the pen had fallen from his hand as he had finally given way to sleep. Upset, Septimus had shown the scroll to Marcia. She had explained that if someone who is Possessed by a Dwelling spirit falls asleep outside the Dwelling Place, they fall asleep forever.

"But how can people sleep forever?" Septimus had asked, puzzled.

"Well, actually, Septimus," Marcia had said, "they die. Generally about three minutes into their sleep."

That, thought Septimus, explained the dark hollows from which Syrah's eyes shone like feverish beacons. "Oh, Syrah," he said. "I am so sorry."

Syrah looked surprised. Sympathy was not something she had expected from Septimus. Suddenly, she was overcome by the enormity of what she had forced him to agree to do. She stepped over to him and placed her hand on his arm, noticing gratefully that he did not flinch. "I am sorry that I said I would only save your dragon in return for...this. That was not right. I release you from your promise."

"Oh!" Septimus smiled with relief - things were looking better and better. Then he remembered something. "But you said that if I knew what it was, I would insist on doing it anyway?"

"I believe you would. The Castle is in grave danger."

"In danger? How?"

Syrah did not answer. "If you give me the Keye, I will try to do what needs to be done."

Septimus saw the frown lines etched deep in Syrah's face and her green eyes clouded with worry. Her thin hands were clasped together, her knuckles white with tension. If anyone needed his help, she did. "No," he said. "Whatever it is, I will do it."

"Thank you," said Syrah. "Thank you. We will do it together."