“Adamantine is indestructible,” Petra said out loud. “Swords made from it can’t be broken or blunted. The metal can’t be melted down. It’s very difficult to find, and almost impossible to forge, which makes it—”

“Cost more krona than you can shake a stick at. Exactly. And while the prince values my talents, he’s not going to foot the bill for every tool and bit of furniture in my laboratory to be made of adamantine. I could pay for it myself, of course, but why should I? Still, you have no idea how maddening, how heartbreaking, it is to achieve the perfect shade of coral orange and have the bowl suddenly melt in your hands. The dye splatters everywhere and is lost, or the acid gets into the dye and it turns black. So that’s where you come in. You take my instructions. You be my hands.”

“But if the doorknob is made of adamantine, why do you have two? The iron handle is unnecessary, isn’t it? Even if you touch the red knob, the adamantine would absorb the acid. Everyone else can use it.”

The woman was scandalized. “But it is my doorknob! What makes you think I want everyone to use it? Do you have any idea how many times a day you swampy servants wash your hands? I’ll tell you: none! You’ll use the iron one, you will!”

“Yes, Mistress …” Petra trailed off. She realized she had no idea what to call her.

“Iris.”

“Mistress Iris.”

“Just Iris, please. I don’t have time for your mincings and suckings-up. Leave that for the court to do.”

“Is that your first name or your last?”

“Well, if you must know, my name is Irenka Grisetta December, the Sixth Countess of Krumlov. But that really is an insane amount of syllables to say. You can call me Iris for short.”

Krumlov! Astrophil’s legs flickered against Petra’s ear with excitement. She is a member of one of the most powerful families in Bohemia! They are cousins of the prince. Krumlov is an enormous, splendid estate of land, and its main city is said to be a miniature Prague. Whatever is she doing here? She should be holding ball dances and scheming to get her nephew on the throne, not working as a maker of dyes.

Petra knew that some of the most important positions in the castle were held by Academy-trained members of the nobility. But she, like Astrophil, was surprised to find someone of such high rank working like a normal person in a laboratory, adamantine doorknobs or no adamantine doorknobs. Maybe she likes her job, Petra suggested.

With the airy ease of someone who has told you her name but finds no need to know yours, Iris ordered Petra to fetch a mortar and pestle and a jar on the topmost shelf near a skylight. The jar teemed with little black insects. Petra brought them to the table.

“We are going to make a brilliant red dye. Crimson. It will be used to dye the velvet sash of the prince himself, so it must be perfect. These”—Iris pointed to the jar of bugs—“are kermes beetles. They have been harvested from evergreen oaks. You are going to crush them.”

“But they’re not red.”

Iris’s face looked strained, like she was just managing not to scream. “No,” she said through clenched teeth, “they are not. But when you pulverize them alive, their blood is red, and a very special red at that. Now, when you tip them from the jar into the mortar, make sure that you grind them up quickly. They are devilishly fast.”

And so Petra began her second job at the castle that day with a glad feeling in her heart. You might think that crushing bugs isn’t much more enjoyable than chopping onions, and you might be right. But Petra could tell that working for Iris would be, at the very least, anything but boring.

PETRA’S EYES DROOPED as she walked with several other girls toward the women’s dormitory. It was a long hall littered with many pallets, on which some people were already sleeping. She scoured the hall for another free bed, hoping to see Sadie or Susana. Eventually she spotted Susana, but she was curled up, sound asleep.

Petra was relieved when Sadie waved and patted the pallet next to her. Petra snuggled under a wool blanket. The pallet wasn’t the thickest ever made, but it was fairly clean and comfortable. Someone blew out the candles. As a smoky, waxy smell filled the air, Petra told Sadie about her day in a low whisper. Sadie had spent most of the afternoon preparing bedchambers for the visiting ambassadors, so her own report was not as interesting as Petra’s—just filled with the tedium of changing sheets and dusting.

Listening to Sadie’s voice coming out of the blackness, Petra was struck by how perfect it was. She spoke Czech as if she had learned it from birth. Petra whispered, “How do you speak Czech so well? Neel has such a funny way of talking.”

“He could speak like me if he wanted to,” Sadie whispered back. “We’re both very good at learning languages. We’ve lived in so many different countries.”

“Were you born here?”

“No, I was born in Spain. When people ask why my eyes and hair are so dark, I tell them that my father was Spanish. And that’s true. I say nothing about my mother. They assume that she’s Bohemian.”

“Was Neel born in Spain, too?”

There was a brief silence. “We think he was born in Bohemia.”

“You think he was?”

Sadie was quiet, and Petra listened to the rattling snores of a nearby woman. Then came Sadie’s hushed answer: “Neel was abandoned as a baby. He was left near our clan’s campsite. Nobody wanted to take him at first, especially because he had no token around his neck.”

“Token?”

“A string. Or a bit of leather with a ring or a stone on it. Anything, really, that means that a father has acknowledged a child as his. Neel was just wrapped up in a blue blanket, with no clothes or anything else. I was little at the time. I don’t remember much about it. But my mother took him in.”

“A blue blanket? Is that why his name is Neel? He said that it means ‘blue.’ “

“Well, yes. It does mean ‘blue.’ But his full name means something more like ‘a stone that is blue.’ ‘Indraneel’ means ‘sapphire.’ “ Sadie paused. Then she said, “Petra, don’t mention any of this to him. He doesn’t like to think about it. Or talk about it. I am his sister. Our mother is our mother. End of story. All right?”

“Yes.” Petra sighed. It seemed that people were always telling her things she had to keep to herself. Sometimes it was hard not to feel like a Worry Vial with two legs.

16

Iris’s Invention

MORE THAN TWO WEEKS PASSED. Petra hadn’t yet had a free moment to even step outside of the castle, and the only sunshine she saw came in through the skylights of the Dye Works.

Her life fell into a steady pattern. She woke up at dawn. She powdered minerals or steeped flowers in water or scraped the insides of imported seashells. Dyes stained her hands with interesting colors. She ate lunch with Iris. She desperately tried to forget how the kitchen workers treated Iris’s food. Petra ate dinner with the other servants in their eating hall. Sadie kept her close by, watching over her like an older sister. She taught Petra how to sew money into her skirts for safekeeping. One night Petra took a needle, thread, and Tomik’s Marvels into the privy. There she hid the spheres in the hem of her dress, hoping they wouldn’t break. Although Petra always hated wearing skirts, she now had to admit that they had their uses.

Many things began to weigh heavily on Petra’s mind. Even though the servants were each allotted a small, locked wooden chest for their most valued possessions, she worried about keeping her father’s notebook in a place that could easily be searched. And she wondered if Lucie and Pavel had left Prague already. Had her family yet learned that she was somewhere among the thousands of people in the city? She wished she could write a letter telling them that she was safe, but she was unsure how to send it. Anything mailed from the castle was subject to being read, and would be stamped with a salamander-shaped seal that would betray where she was.

What troubled her most, however, was that she was no closer to her goal. She had no idea where the prince kept her father’s eyes. She hadn’t even seen anything of the castle beyond the servants’ quarters and the Thinkers’ Wing.

One morning, Petra strolled down the Thinkers’ Wing, humming a tune. The doors flanked her like silent soldiers. She idly gripped a doorknob. It rattled but would not turn. Petra stopped humming, because she suddenly recognized the melody on her lips. It was “The Grasshopper,” the song she and her father danced to years ago.

A longing for home filled her heart. She tried to ignore it, staring down the Thinkers’ Wing.

Surely her father had worked in one of these laboratories.

Petra tried the doors until she found one that was unlocked. She pushed it open and stepped inside. A shuddering wave of power hit her. Astrophil squealed and pinched her ear. She was thrown back into the hallway on her bottom, her teeth clattering. She stood up, dusting herself off. The closed doors looked smug. “I’m not afraid of you,” she told them.

Speak for yourself, said Astrophil.

After Petra rattled several more locked doorknobs, one turned in her hand. She stuck a toe inside the room as if testing the waters of a chilly lake. She and Astrophil sighed with relief when nothing happened.

Inside this laboratory was a man with paint-smeared clothes. He was staring at a canvas the size of a wall. When he noticed Petra’s presence, he was friendly, and introduced himself as Kristof, an artist from Poland. But he spoke barely any Czech. Soon he forgot that Petra was in the room, and just resumed staring at the utterly blank canvas. Petra saw him use a brush to dab pink paint on the canvas. The color quickly disappeared, leaving the surface as empty as it was before. Kristof looked pleased, but Petra was confused. She didn’t see how an absentminded artist and his absent art would help her quest, so she did not return to Kristof’s studio.

Every day she tried the locked doors, but with no further luck. She attempted to take the stairs to the next floor of the castle, but was rudely stopped by guards. As Iris’s assistant, Petra had a pass that gave her access to the Thinkers’ Wing. But she was not allowed beyond that.

She began to feel that her idea to seek a job at the castle in order to rescue her father’s eyes was a mistake. It didn’t make her feel better that the one person who said he would help her was nowhere to be seen. Neel was as invisible as if Kristof had painted his portrait. She supposed that Neel, despite what he’d said, had never bothered to get a job in the stables.

There was never a moment’s rest when Petra was in the Dye Works, and she was surprised to find that this suited her. Working to meet Iris’s demands distracted her from thinking about how her plan was proving to be a failure. And as she slowly learned how to prepare and mix pigments, Petra felt like she was atoning for something: for not trying harder to practice her father’s trade. In the Dye Works, she strove to do well. Iris criticized Petra’s work, but the girl knew that she was deft at carrying out Iris’s commands. Although Iris complained, Petra began to suspect that her words were really praise given in a grouchy tone, such as “You ground that ochre too finely!” Petra could tell the difference between this kind of comment and words expressed with real irritation, such as when Iris grumbled about receiving orders for hair dyes.

“As if I didn’t have enough to do! As if my highest priority was keeping Lady Hortensia’s hair a sunny yellow! If you ask me, it would be far easier for her to catch an eligible husband if she were to buy a new brain. But no! Everybody has to look as fine as possible for the prince’s ball, and they don’t care a whit that I am on the brink of an important discovery.”

The prince, Iris revealed, would soon turn nineteen. An elaborate celebration would be held in his honor. Her gift to him would be the invention of a new primary color.

“Currently there are only three primary colors: blue, yellow, and red. Every other color is a mix of these three. Except white, which doesn’t count as a color.”

White is the absence of color, Astrophil informed Petra.

I know that, Petra thought back.

“Imagine,” Iris continued, light gleaming on the lenses of her spectacles, “imagine that there was another primary color. It would open a world of possibilities. You can mix red and yellow to get orange. Red and blue make purple. But what would happen if you mixed a new primary color with red? What would you see?”

Petra was less interested in the invention of a new primary color than she was in the birthday celebration. Perhaps while everybody was busy, she would be able to skulk around the castle. “Will the celebration take place here?” she asked. She hoped that the prince would decide to have it in a hunting lodge hundreds of miles away.

“Of course. And you will get to see some of it.”

“Really?”

“Oh, yes. Prince Rodolfo is good to his people. He believes that everyone should join in his happiness.”

It amazed Petra that a woman as intelligent as Iris could think well of somebody Petra knew to have a black heart. But one day, while grating a madder root, Petra asked the following question: “Do you make Kristof’s paints?”

“Kristof!” Iris frowned. “I suppose you mean the Pole down the hall.”

“Yes. I met him last week.”

“Did you? Well, I would advise you not to keep his company. You are my assistant. If anyone is going to get rid of you, it will be me.”

Petra didn’t understand what she meant by that, but she could tell that Kristof wasn’t on Iris’s list of favorite people. Though she had a hard time imagining who would be on that list, except maybe the prince. “So you don’t make his paints.”