The screen responded as quickly as thought itself, and out of the welter of lines and flashes a series of pictures formed with perfect clarity: compa.s.ses, alpha and omega again, lightning, angel. Each picture flashed up a different number of times, and then came a different three: camel, garden, moon.

Lyra saw their meanings clearly, and unfocused her mind to explain. This time, when she turned around, she saw that Dr. Malone was sitting back in her chair, white-faced, clutching the edge of the table.

"What it says," Lyra told her, "it's saying in my language, right-the language of pictures. Like the alethiometer. But what it says is that it could use ordinary language too, words, if you fixed it up like that. You could fix this so it put words on the screen. But you'd need a lot of careful figuring with numbers-that was the compa.s.ses, see. And the lightning meant anbaric-I mean, electric power, more of that. And the angel-that's all about messages. There's things it wants to say. But when it went on to that second bit...it meant Asia, almost the farthest east but not quite. I dunno what country that would be-China, maybe. And there's a way they have in that country of talking to Dust, I mean Shadows, same as you got here and I got with the-I got with pictures, only their way uses sticks. I think it meant that picture on the door, but I didn't understand it, really. I thought when I first saw it there was something important about it, only I didn't know what. So there must be lots of ways of talking to Shadows."

Dr. Malone was breathless.

"The I Ching," she said. "Yes, it's Chinese. A form of divination-fortune-telling, really....And, yes, they use sticks. It's only up there for decoration," she said, as if to rea.s.sure Lyra that she didn't really believe in it. "You're telling me that when people consult the I Ching, they're getting in touch with Shadow particles? With dark matter?"

"Yeah," said Lyra. "There's lots of ways, like I said. I hadn't realized before. I thought there was only one."

"Those pictures on the screen..." Dr. Malone began.

Lyra felt a flicker of a thought at the edge of her mind, and turned to the screen. She had hardly begun to formulate a question when more pictures flashed up, succeeding each other so quickly that Dr. Malone could hardly follow them; but Lyra knew what they were saying, and turned back to her.

"It says that you're you're important, too," she told the scientist. "It says you got something important to do. I dunno what, but it wouldn't say that unless it was true. So you probably ought to get it using words, so you can understand what it says." important, too," she told the scientist. "It says you got something important to do. I dunno what, but it wouldn't say that unless it was true. So you probably ought to get it using words, so you can understand what it says."

Dr. Malone was silent. Then she said, "All right, where do do you come from?" you come from?"

Lyra twisted her mouth. She realized that Dr. Malone, who until now had acted out of exhaustion and despair, would never normally have shown her work to a strange child who turned up from nowhere, and that she was beginning to regret it. But Lyra had to tell the truth.

"I come from another world," she said. "It's true. I came through to this one. I was...I had to run away, because people in my world were chasing me, to kill me. And the alethiometer comes from...from the same place. The Master of Jordan College gave it me. In my my Oxford there's a Jordan College, but there en't one here. I looked. And I found out how to read the alethiometer by myself. I got a way of making my mind go blank, and I just see what the pictures mean straightaway. Just like you said about...doubts and mysteries and that. So when I looked at the Cave, I done the same thing, and it works just the same way, so my Dust and your Shadows are the same, too. So..." Oxford there's a Jordan College, but there en't one here. I looked. And I found out how to read the alethiometer by myself. I got a way of making my mind go blank, and I just see what the pictures mean straightaway. Just like you said about...doubts and mysteries and that. So when I looked at the Cave, I done the same thing, and it works just the same way, so my Dust and your Shadows are the same, too. So..."

Dr. Malone was fully awake now. Lyra picked up the alethiometer and folded its velvet cloth over it, like a mother protecting her child, before putting it back in her rucksack.

"So anyway," she said, "you could make this screen so it could talk to you in words, if you wanted. Then you could talk to the Shadows like I talk to the alethiometer. But what I want to know is, why do the people in my world hate it? Dust, I mean, Shadows. Dark matter. They want to destroy it. They think it's evil. But I think what they they do is evil. I seen them do it. So what is it, Shadows? Is it good or evil, or what?" do is evil. I seen them do it. So what is it, Shadows? Is it good or evil, or what?"

Dr. Malone rubbed her face and turned her cheeks red again.

"Everything about this is embarra.s.sing, embarra.s.sing," she said. "D'you know how embarra.s.sing it is to mention good and evil in a scientific laboratory? Have you any idea? One of the reasons I became a scientist was not to have to think about that kind of thing."

"You got got to think about it," said Lyra severely. "You can't investigate Shadows, Dust, whatever it is, without thinking about that kind of thing, good and evil and such. And it said you got to, remember. You can't refuse. When are they going to close this place down?" to think about it," said Lyra severely. "You can't investigate Shadows, Dust, whatever it is, without thinking about that kind of thing, good and evil and such. And it said you got to, remember. You can't refuse. When are they going to close this place down?"

"The funding committee decides at the end of the week....Why?"

"'Cause you got tonight, then," said Lyra. "You could fix this engine thing to put words on the screen instead of pictures like I made. You could do that easy. Then you could show 'em, and they'd have to give you the money to carry on. And you could find out all about Dust, or Shadows, and tell me. You see," she went on a little haughtily, like a d.u.c.h.ess describing an unsatisfactory housemaid, "the alethiometer won't exactly tell me what I need to know. But you could find out for me. Else I could probably do that Ching thing, with the sticks. But pictures are easier to work. I think so, anyway. I'm going to take this off now," she added, and pulled at the electrodes on her head.

Dr. Malone gave her a tissue to wipe off the gel, and folded up the wires.

"So you're going?" she said. "Well, you've given me a strange hour, that's no mistake."

"Are you going to make it do words?" Lyra said, gathering up her rucksack.

"It's about as much use as completing the funding application, I daresay," said Dr. Malone. "No, listen. I want you to come back tomorrow. Can you do that? About the same time? I want you to show someone else."

Lyra narrowed her eyes. Was this a trap?

"Well, all right," she said. "But remember, there's things I need to know."

"Yes. Of course. You will will come?" come?"

"Yes," said Lyra. "If I say I will, I will. I could help you, I expect."

And she left. The porter at the desk looked up briefly and then went back to his paper.

"The Nuniatak dig," said the archaeologist, swinging his chair around. "You're the second person in a month to ask me about that."

"Who was the other one?" said Will, on his guard at once.

"I think he was a journalist. I'm not sure."

"Why did he want to know about it?" he said.

"In connection with one of the men who disappeared on that trip. It was the height of the cold war when the expedition vanished. Star Wars. You're probably too young to remember that. The Americans and the Russians were building enormous radar installations all across the Arctic....Anyway, what can I do for you?"

"Well," said Will, trying to keep calm, "I was just trying to find out about that expedition, really. For a school project about prehistoric people. And I read about this expedition that disappeared, and I got curious."

"Well, you're not the only one, as you see. There was a big to-do about it at the time. I looked it all up for the journalist. It was a preliminary survey, not a proper dig. You can't do a dig till you know whether it's worth spending time on it, so this group went out to look at a number of sites and make a report. Half a dozen blokes altogether. Sometimes on an expedition like this you combine forces with people from another discipline-you know, geologists or whatever-to split the cost. They look at their stuff and we look at ours. In this case there was a physicist on the team. I think he was looking at high-level atmospheric particles. The aurora, you know, the northern lights. He had balloons with radio transmitters, apparently.

"And there was another man with them. An ex-Marine, a sort of professional explorer. They were going up into some fairly wild territory, and polar bears are always a danger in the Arctic. Archaeologists can deal with some things, but we're not trained to shoot, and someone who can do that and navigate and make camp and do all the sort of survival stuff is very useful.

"But then they all vanished. They kept in radio contact with a local survey station, but one day the signal didn't come, and nothing more was heard. There'd been a blizzard, but that was nothing unusual. The search expedition found their last camp more or less intact, though the bears had eaten their stores. But there was no sign of the people whatsoever.

"And that's all I can tell you, I'm afraid."

"Yes," said Will. "Thank you. Umm...that journalist," he went on, stopping at the door. "You said he was interested in one of the men. Which one was it?"

"The explorer type. A man called Parry."

"What did he look like? The journalist, I mean?"

"What d'you want to know that for?"

"Because..." Will couldn't think of a plausible reason. He shouldn't have asked. "No reason. I just wondered."

"As far as I can remember, he was a big blond man. Very pale hair."

"Right, thanks," Will said, and turned to go.

The man watched him leave the room, saying nothing, frowning a little. Will saw him reach for the phone, and left the building quickly.

He found he was shaking. The journalist, so called, was one of the men who'd come to his house: a tall man with such fair hair that he seemed to have no eyebrows or eyelashes. He wasn't the one Will had knocked down the stairs: he was the one who'd appeared at the door of the living room as Will ran down and jumped over the body.

But he wasn't a journalist.

There was a large museum nearby. Will went in, holding his clipboard as if he were working, and sat down in a gallery hung with paintings. He was trembling hard and feeling sick, because pressing at him was the knowledge that he'd killed someone, that he was a murderer. He'd kept it at bay till now, but it was closing in. He'd taken away the man's life.

He sat still for half an hour, and it was one of the worst half-hours he'd ever spent. People came and went, looking at the paintings, talking in quiet voices, ignoring him; a gallery attendant stood in the doorway for a few minutes, hands behind his back, and then slowly moved away; and Will wrestled with the horror of what he'd done, and didn't move a muscle.

Gradually he grew calmer. He'd been defending his mother. They were frightening her; given the state she was in, they were persecuting her. He had a right to defend his home. His father would have wanted him to do that. He did it because it was the good thing to do. He did it to stop them from stealing the green leather case. He did it so he could find his father; and didn't he have a right to do that? All his childish games came back to him, with himself and his father rescuing each other from avalanches or fighting pirates. Well, now it was real. I'll find you, he said in his mind. Just help me and I'll find you, and we'll look after Mum, and everything'll be all right....

And after all, he had somewhere to hide now, somewhere so safe no one would ever find him. And the papers from the case (which he still hadn't had time to read) were safe too, under the mattress in Cittagazze.

Finally he noticed people moving more purposefully, and all in the same direction. They were leaving, because the attendant was telling them that the museum would close in ten minutes. Will gathered himself and left. He found his way to the High Street, where the lawyer's office was, and wondered about going to see him, despite what he'd said earlier. The man had sounded friendly enough....

But as he made up his mind to cross the street and go in, he stopped suddenly.

The tall man with the pale eyebrows was getting out of a car.

Will turned aside at once, casually, and looked in the window of the jeweler's shop beside him. He saw the man's reflection look around, settle the knot of his tie, and go into the lawyer's office. As soon as he'd gone in, Will moved away, his heart thudding again. There wasn't anywhere safe. He drifted toward the university library and waited for Lyra.

FIVE.

AIRMAIL PAPER.

"Will," said Lyra.

She spoke quietly, but he was startled all the same. She was sitting on the bench beside him and he hadn't even noticed.

"Where did you come from?"

"I found my Scholar! She's called Dr. Malone. And she's got an engine that can see Dust, and she's going to make it talk-"

"I didn't see you coming."

"You weren't looking," she said. "You must've been thinking about something else. It's a good thing I found you. Look, it's easy to fool people. Watch."

Two police officers were strolling toward them, a man and a woman on the beat, in their white summer shirtsleeves, with their radios and their batons and their suspicious eyes. Before they reached the bench, Lyra was on her feet and speaking to them.

"Please, could you tell me where the museum is?" she said. "Me and my brother was supposed to meet our parents there and we got lost."

The policeman looked at Will, and Will, containing his anger, shrugged as if to say, "She's right, we're lost, isn't it silly." The man smiled. The woman said: "Which museum? The Ashmolean?"

"Yeah, that one," said Lyra, and pretended to listen carefully as the woman gave her instructions.

Will got up and said, "Thanks," and he and Lyra moved away together. They didn't look back, but the police had already lost interest.

"See?" she said. "If they were looking for you, I put 'em off. 'Cause they won't be looking for someone with a sister. I better stay with you from now on," she went on scoldingly once they'd gone around the corner. "You en't safe on your own."

He said nothing. His heart was thumping with rage. They walked along toward a round building with a great leaden dome, set in a square bounded by honey-colored stone college buildings and a church and wide-crowned trees above high garden walls. The afternoon sun drew the warmest tones out of it all, and the air felt rich with it, almost the color itself of heavy golden wine. All the leaves were still, and in this little square even the traffic noise was hushed.

She finally became aware of Will's feelings and said, "What's the matter?"

"If you speak to people, you just attract their attention," he said, with a shaking voice. "You should just keep quiet and still and they overlook you. I've been doing it all my life. I know how to do it. Your way, you just-you make yourself visible. You shouldn't do that. You shouldn't play at it. You're not being serious."

"You think so?" she said, and her anger flashed. "You think I don't know about lying and that? I'm the best liar there ever was. But I en't lying to you, and I never will, I swear it. You're in danger, and if I hadn't done that just then, you'd've been caught. Didn't you see 'em looking at you? 'Cause they were. You en't careful enough. If you want my opinion, it's you that en't serious."

"If I'm not serious, what am I doing hanging about waiting for you when I could be miles away? Or hiding out of sight, safe in that other city? I've got my own things to do, but I'm hanging about here so I can help you. Don't tell me I'm not serious."

"You had had to come through," she said, furious. No one should speak to her like this. She was an aristocrat. She was Lyra. "You had to, else you'd never find out anything about your father. You done it for yourself, not for me." to come through," she said, furious. No one should speak to her like this. She was an aristocrat. She was Lyra. "You had to, else you'd never find out anything about your father. You done it for yourself, not for me."

They were quarreling pa.s.sionately, but in subdued voices, because of the quiet in the square and the people who were wandering past nearby. When she said this, though, Will stopped altogether. He had to lean against the college wall beside him. The color had left his face.

"What do you know about my father?" he said very quietly.

She replied in the same tone. "I don't know anything. All I know is you're looking for him. That's all I asked about."

"Asked who who?"

"The alethiometer, of course."

It took a moment for him to remember what she meant. And then he looked so angry and suspicious that she took it out of her rucksack and said, "All right, I'll show you."

And she sat down on the stone curb around the gra.s.s in the middle of the square and bent her head over the golden instrument and began to turn the hands, her fingers moving almost too quickly to see, and then pausing for several seconds while the slender needle whipped around the dial, flicking to a stop here and there, and then turning the hands to new positions just as quickly. Will looked around carefully, but there was no one near to see; a group of tourists looked up at the domed building, an ice cream vendor wheeled his cart along the pavement, but their attention was elsewhere.

Lyra blinked and sighed, as if she were waking after a sleep.

"Your mother's ill," she said quietly. "But she's safe. There's this lady looking after her. And you took some letters and ran away. And there was a man, I think he was a thief, and you killed him. And you're looking for your father, and-"

"All right, shut up," said Will. "That's enough. You've got no right to look into my life like that. Don't ever do that again. That's just spying."

"I know when to stop asking," she said. "See, the alethiometer's like a person, almost. I sort of know when it's going to be cross or when there's things it doesn't want me to know. I kind of feel it. But when you come out of nowhere yesterday, I had to ask it who you were, or I might not have been safe. I had to. And it said..." She lowered her voice even more. "It said you was a murderer, and I thought, Good, that's all right, he's someone I can trust. But I didn't ask more than that till just now, and if you don't want me to ask any more, I promise I won't. This en't like a private peep show. If I done nothing but spy on people, it'd stop working. I know that as well as I know my own Oxford."

"You could have asked me instead of that thing. Did it say whether my father was alive or dead?"

"No, because I didn't ask."

They were both sitting by this time. Will put his head in his hands with weariness.

"Well," he said finally, "I suppose we'll have to trust each other."

"That's all right. I trust you."

Will nodded grimly. He was so tired, and there was not the slightest possibility of sleep in this world. Lyra wasn't usually so perceptive, but something in his manner made her think: He's afraid, but he's mastering his fear, like Iorek Byrnison said we had to do; like I did by the fish house at the frozen lake.

"And, Will," she added, "I won't give you away, not to anyone. I promise."

"Good."

"I done that before. I betrayed someone. And it was the worst thing I ever did. I thought I was saving his life actually, only I was taking him right to the most dangerous place there could be. I hated myself for that, for being so stupid. So I'll try very hard not to be careless or forget and betray you."

He said nothing. He rubbed his eyes and blinked hard to try and wake himself up.