The watch officer called out a moment later, "For Dr. Barlow's eyes only, sir."

The captain turned to Deryn and nodded.

She saluted him, then made her way to the lady boffin's stateroom with the message tube in hand. It rattled a bit.

Her knock was answered by Tazza whining from inside, which Deryn took as permission to go in.

"Afternoon, ma'am. Message from London for you." She squinted at the writing the tube. "From a P. C. Mitchell."

The lady boffin looked up from a book. "Ah, at last. Please open it."

"Begging your pardon, ma'am, but it says 'Top Secret.'"

"I'm sure it does. But you have proven yourself adept at keeping secrets, Mr. Sharp. Proceed."

Her loris chuckled, then said, "Secrets!"

"Aye, ma'am." Deryn pulled open the message tube. It contained a single piece of translucent avian-mail paper scrolled around a small felt bag with something tiny and hard inside.

She unrolled the paper and read, " 'Dear Nora, it is as you suspected: iron and nickel, with traces of cobalt, phosphorous, and sulfur. All quite natural in formation.' And it's signed, 'Regards, Peter.' "

"Just as I thought," the lady boffin sighed. "But too late to save him."

"Save who?" Deryn asked, but then realized the obvious - Nikola Tesla was the only person who'd needed saving lately. No one knew exactly what had happened the night he'd died. But it was fairly certain that the great inventor had been electrocuted by Goliath itself, the machine malfunctioning thanks to German shells and the general chaos of battle.

Deryn upended the felt bag onto her palm, and there it was - the tiny piece she'd cut from the object under Tesla's bed.

"So this is about that mad boffin's rock?" She looked at the letter again. "Nickel and cobalt and sulfur? What does it all mean?"

"Meteoric," the loris said.

Deryn stared at the creature. She'd read the word somewhere in the Manual of Aeronautics's natural philosophy chapters, but couldn't quite place it.

"It means, Mr. Sharp, that Tesla was a fraud." Dr. Barlow shrugged. "Or perhaps a madman - he seemed to think he could destroy Berlin."

"You mean Goliath wouldn't have worked?" Deryn shook her head. "But what about Siberia?"

Dr. Barlow pointed at Deryn's hand. "In Siberia a stone fell from the sky."

"A wee stone did all that?"

"A meteor, to be precise. And not a small one but a giant piece of iron traveling at many thousands of miles per hour. What Mr. Tesla found was only a fraction of the whole." Dr. Barlow placed her book aside. "I suppose he was testing his machine when the meteor struck, and he took it into his head that he himself wielded cosmic power. Quite typical of him, really."

Deryn looked at the tiny piece of iron in her hand. "But he had that metal detector sent to him, so he was looking for iron. He must have known it was a meteor!"

"The greater part of madness is hiding the truth from oneself. Or perhaps Tesla imagined that his machine could call down iron from the sky." She picked up the stone for a closer look. "In any case, what happened in Tunguska was merely an accident. A cosmic joke, so to speak."

Deryn shook her head, remembering the fallen trees stretching mile after mile in all directions. It was too much to believe that a mere accident could have created such ruination.

"It is fitting, though," the lady boffin said with a sad smile, "that Goliath should have been felled by a stone."

"But Tesla's machine made the sky change color. Lord Churchill himself saw it happen!"

The lady boffin laughed outright at this. "Yes, Tesla made the sky change color . . . at sunrise. Not such a difficult trick, if one has a gullible audience. Or perhaps Goliath really could change atmospheric conditions. But that's a far cry from destroying a city, Mr. Sharp."

"Gullible," her loris said with a snicker.

"You mean it was all rubbish? Everything we did, everything that Alek . . ."

Deryn closed her eyes. Alek had been duped, just as she'd always feared.

"An interesting point, Mr. Sharp. If a meteor falls in the forest and no one realizes it, does it end the war?" The lady boffin handed back the stone. "The Germans believed in Goliath, and in their belief they have propelled the United States to join our cause. That falling stone may have brought us peace, one way or another."

The black piece of iron suddenly felt uncanny in Deryn's hand. It was something from another world, wasn't it? She put it back into the bag, rolled the letter up, and slipped them both into the message tube. With a step forward she placed the tube on the lady boffin's desk.

"This will stay top secret, won't it, ma'am?"

"Of course," Dr. Barlow said. "With Goliath being rebuilt, the Zoological Society will have to keep the truth under wraps. Even His Majesty's Government mustn't know."

Deryn frowned. "But what about Alek? He's still raising money for the Tesla Foundation."

"Repairing Goliath will make the Germans anxious to sue for peace." Dr. Barlow fixed Deryn with her stare. "Telling Alek would be a mistake."

"But he's not your puppet, Dr. Barlow! Can you imagine what he's feeling? He thought the war would be over by now."

"Indeed," the lady boffin said. "So why make matters worse by revealing that Tesla made a fool of him?"

Deryn started to protest, but the lady boffin had a point. It would crush Alek to discover that his destiny was a lie, nothing but a cosmic accident.

"But Alek thinks it's his fault the war's still going, because he shut down the machine after Tesla was killed!"

"Ny orf this is his fault, Deryn," the lady boffin said. "And the war will end one day. Wars always do."

They pinned the medal on Alek in the cargo bay, with half the crew in formal dress and standing at attention. Captain Hobbes read the honors while a score of reporters snapped photographs, including a certain bum-rag from the New York World. Klopp, Hoffman, and Bauer were there in fresh civilian clothes, while Count Volger still wore his cavalry uniform. Even a few diplomats from the Austro-Hungarian consulate appeared, hedging their bets in case Alek's claim to the throne prevailed.

Deryn managed not to roll her eyes during the ceremony, even when the captain spoke of the grave injuries Alek had sustained.

"He fell and knocked his head," she muttered.

"Pardon me?" came a whisper from behind her, and Deryn turned. It was Adela Rogers, the Hearst reporter.

"Nothing."

"Surely it's something." The woman stepped closer. "The bell captain never speaks without reason."

Deryn bit her lip, wanting to explain that she was not a bell captain but a midshipman, a decorated officer. And soon a secret agent in the employ of the barking Zoological Society of London!

But she turned away, saying quietly, "He's done better things, that's all."

"You may be right about that. I was there the night Tesla died."

Deryn looked at Miss Rogers again, wondering what this was about.

"The last I saw of him," the woman said, "His Highness seemed very determined to stop Mr. Tesla."

"Alek saved this ship that night."

"And Berlin, too, I hear." The woman's notepad came out. "In fact, some people are saying the war might have been over already if Goliath had been fired, but Prince Aleksandar didn't want that. He is a Clanker, after all."

"No one even knows if that contraption - ," Deryn began, but halted herself. That was too close to Dr. Barlow's new secret to say aloud.

Why couldn't everyone see that Alek had done more to end the war than anyone else? He'd given his gold to the Ottoman Revolution and his engines to the Leviathan, which had rescued Tesla from being eaten in the wilderness. That had all made a difference, hadn't it?

"You know something secret, don't you, bell captain?" the woman said. "You always have."

Deryn shrugged. "All I know is that His Serene Highness Aleksandar wants peace, just like he says. You can quote me on that."

Chapter Forty-Two

After the ceremony, once all the photographs had been taken and the diplomats and notables had offered their congratulations, Alek went in search of Deryn. But before he could take two steps into the crowd, he found himself trapped between Captain Hobbes and the lady boffin.

"Your Serene Highness, congratulations again!" the captain said, and he offered a salute instead of bowing. As Alek returned the gesture, he imagined himself for a fleeting moment as a member of the crew. But that dream was over.

"Thank you, sir. For this and . . ." He shrugged. "For never throwing us into the brig."

Captain Hobbes smiled. "It was tricky for you in those first days, wasn't it? And a bit strange for us, having Clankers on the ship."

"But I always knew we'd make a proper Darwinist of you in the end," Dr. Barlow said, staring pointedly at Alek's medal.

He had been awarded the Air Gallantry Cross, the highest honor the British armed services could give a civilian, and right there on its face was a portrait of old Charles Darwin himself.

"A proper Darwinist," the lady boffin's loris said, and Bovril chuckled.

"I'm not sure what I am, these days," Alek admitted. "But I shall try to live up to this honor."

"A fine watchword in these strange times, Your Highness," the captain said. "If you'll excuse me, I must attend to our American guests. Their Clanker airships will be joining us on our way back to Europe. Most extraordinary."

"It certainly is." Alek bowed as the man strode away toward a clump of officers in dark American blue.

"How quickly things have turned," Dr. Barlow said. "The Ottomans remain neutral, Austria-Hungary is looking for a way out, and now the United States has joined the fray. Tesla may not have ended the war, but his death seems to have shortened it considerably."

"Let us hope so," Alek managed to say, and he looked about for a way to change the subject.

"Klopp!" said Bovril.

"Ah, yes." Alek waved his men over. "Master Klopp, Bauer, and Hoffman have left my service. They'll be staying here in America."

"The land of opportunity," the lady boffin said in excellent German.

Klopp nodded. "And the only place in the Clanker world that won't call us traitors and plotters, madam."

"That's only for the moment, Master Klopp," Alek said. "We'll all get home someday, I'm sure." The three men still looked odd to him in their civilian suits and ties, but they would be back in coveralls soon enough. "They're starting work Monday for a manufacturer of passenger walkers."

"Mightn't that be a bit boring?" the lady boffin asked. "After months of gallivanting about with your young prince?"

"Not at all boring, madam," Bauer said. "Mr. Ford pays five dollars a day!"

Dr. Barlow's eyes widened. "How extraordinary."

Alek smiled. He'd tried to give Klopp the rest of his father's gold, but the man hadn't taken it. In any case, the toothpick weighed less than twenty grams, no more than fifteen dollars' worth. Working for Ford Walkers, the three of them together would make that every day.

"Land of opportunity," the lady boffin's loris said with a sniff. The creature's German accent was also excellent.

"Where is your Count Volger?" Dr. Barlow said. "I've saved a number of periodicals for him."

"He's here somewhere." Alek looked about, and saw Volger skulking in a dark corner of the cargo bay. His eyebrows had been burnt off when Tesla's bolt of lightning had struck their swords, making his expression resemble a madman's in a motion picture show.