Oddly enough, No. 403 Road of the Four Lions burned down that night.

Thasper saw clearly that assassins were after the Sage as well as he was. He became more obsessed with finding him than ever. He knew he could rescue the Sage if he caught him before the assassins did. He did not blame the Sage for moving about all the time.

Move about the Sage certainly did. Rumor had him next in Partridge Pleasance Street. When Thasper tracked him there, he found the Sage had moved to Fauntel Square. From Fauntel Square, the Sage seemed to move to Strong Wind Boulevard, and then to a poorer house in Station Street. There were many places after that. By this time Thasper had developed a nose, a sixth sense, for where the Sage might be. A word, a mere hint about a quiet lodger, and Thasper was off, knocking on doors, questioning people, being told to ask an invisible dragon, and bewildering his parents by the way he kept rushing off every evening. But no matter how quickly Thasper acted on the latest hint, the Sage had always just left. And Thasper, in most cases, was only just ahead of the assassins. Houses caught fire or blew up, sometimes when he was still in the same street.

At last he was down to a very poor hint, which might or might not lead to New Unicorn Street. Thasper went there, wishing he did not have to spend all day at school. The Sage could move about as he pleased, and Thasper was tied down all day. No wonder he kept missing him. But he had high hopes of New Unicorn Street. It was the poor kind of place that the Sage had been favoring lately.

Alas for his hopes. The fat woman who opened the door laughed rudely in Thasper’s face. “Don’t bother me, son! Go and ask an invisible dragon!” And she slammed the door again.

Thasper stood in the street, keenly humiliated. And not even a hint of where to look next. Awful suspicions rose in his mind: he was making a fool of himself; he had set himself a wild-goose chase; the Sage did not exist. In order not to think of these things, he gave way to anger. “All right!” he shouted at the shut door. “I will ask an invisible dragon! So there!” And carried by his anger, he ran down to the river and out across the nearest bridge.

He stopped in the middle of the bridge, leaning on the parapet, and knew he was making an utter fool of himself. There were no such things as invisible dragons. He was sure of that. But he was still in the grip of his obsession, and this was something he had set himself to do now. Even so, if there had been anyone about near the bridge, Thasper would have gone away. But it was deserted. Feeling an utter fool, he made the prayer sign to Ock, Ruler of Oceans—for Ock was the god in charge of all things to do with water—but he made the sign secretly, down under the parapet, so there was no chance of anyone’s seeing. Then he said, almost in a whisper, “Is there an invisible dragon here? I’ve got something to ask you.”

Drops of water whirled over him. Something wetly fanned his face. He heard the something whirring. He turned his face that way and saw three blots of wet in a line along the parapet, each about two feet apart and each the size of two of his hands spread out together. Odder still, water was dripping out of nowhere all along the parapet, for a distance about twice as long as Thasper was tall.

Thasper laughed uneasily. “I’m imagining a dragon,” he said. “If there was a dragon, those splotches would be the places where its body rests. Water dragons have no feet. And the length of the wetness suggests I must be imagining it about eleven feet long.”

“I am fourteen feet long,” said a voice out of nowhere. It was rather too near Thasper’s face for comfort and blew fog at him. He drew back. “Make haste, child-of-a-god,” said the voice. “What did you want to ask me?”

“I-I-I—” stammered Thasper. It was not just that he was scared. This was a body blow. It messed up utterly his notions about gods needing men to believe in them. But he pulled himself together. His voice only cracked a little as he said, “I’m looking for the Sage of Dissolution. Do you know where he is?”

The dragon laughed. It was a peculiar noise, like one of those water warblers people make bird noises with. “I’m afraid I can’t tell you precisely where the Sage is,” the voice out of nowhere said. “You have to find him for yourself. Think about it, child-of-a-god. You must have noticed there’s a pattern.”

“Too right, there’s a pattern!” Thasper said. “Everywhere he goes, I just miss him, and then the place catches fire!”

“That, too,” said the dragon. “But there’s a pattern to his lodgings, too. Look for it. That’s all I can tell you, child-of-a-god. Any other questions?”

“No—for a wonder,” Thasper said. “Thanks very much.”

“You’re welcome,” said the invisible dragon. “People are always telling one another to ask us, and hardly anyone does. I’ll see you again.” Watery air whirled in Thasper’s face. He leaned over the parapet and saw one prolonged clean splash in the river, and silver bubbles coming up. Then nothing. He was surprised to find his legs were shaking.

He steadied his knees and tramped home. He went to his room, and before he did anything else, he acted on a superstitious impulse he had not thought he had in him and took down the household god Alina insisted he keep in a niche over his bed. He put it carefully outside in the passage. Then he got out a map of the town and some red stickers and plotted out all the places where he had just missed the Sage. The result had him dancing with excitement. The dragon was right. There was a pattern. The Sage had started in good lodgings at the better end of town. Then he had gradually moved to poorer places, but he had moved in a curve, down to the station and back toward the better part again. Now, the Altuns’ house was just on the edge of the poorer part. The Sage was coming this way! New Unicorn Street had not been so far away. The next place should be nearer still. Thasper had only to look for a house on fire.

It was getting dark by then. Thasper threw his curtains back and leaned out of his window to look at the poorer streets. And there it was! There was a red-and-orange flicker to the left—in Harvest Moon Street, by the look of it. Thasper laughed aloud. He was actually grateful to the assassins!

He raced downstairs and out of the house. The anxious questions of parents and the yells of brothers and sisters followed him, but he slammed the door on them. Two minutes’ running brought him to the scene of the fire. The street was a mad flicker of dark figures. People were piling furniture in the road. Some more people were helping a dazed woman in a crooked brown turban into a singed armchair.

“Didn’t you have a lodger as well?” someone asked her anxiously.

The woman kept trying to straighten her turban. It was all she could really think of. “He didn’t stay,” she said. “I think he may be down at the Half Moon now.”

Thasper waited for no more. He went pelting down the street.

The Half Moon was an inn on the corner of the same road. Most of the people who usually drank there must have been up the street, helping rescue furniture, but there was a dim light inside, enough to show a white notice in the window. ROOMS, it said.

Thasper burst inside. The barman was on a stool by the window, craning to watch the house burn. He did not look at Thasper. “Where’s your lodger?” gasped Thasper. “I’ve got a message. Urgent.”

The barman did not turn around. “Upstairs, first on the left,” he said. “The roof’s caught. They’ll have to act quick to save the house on either side.”

Thasper heard him say this as he bounded upstairs. He turned left. He gave the briefest of knocks on the door there, flung it open, and rushed in.

The room was empty. The light was on, and it showed a stark bed, a stained table with an empty mug and some sheets of paper on it, and a fireplace with a mirror over it. Beside the fireplace, another door was just swinging shut. Obviously somebody had just that moment gone through it. Thasper bounded toward that door. But he was checked, for just a second, by seeing himself in the mirror over the fireplace. He had not meant to pause. But some trick of the mirror, which was old and brown and speckled, made his reflection look for a moment a great deal older. He looked easily over twenty. He looked—