The Mark of Athena

“Mother!”

“I care nothing about this Percy. If he has gone over to the Romans, let him perish. Kill him. Kill all the Romans. Find the Mark, follow it to its source. Witness how Rome has disgraced me, and pledge your vengeance.”

“Athena isn’t the goddess of revenge.” Annabeth’s nails bit into her palms. The silver coin seemed to grow warmer in her hand. “Percy is everything to me.”

“And revenge is everything to me,” the goddess snarled. “Which of us is wiser?”

“Something is wrong with you. What’s happened?”

“Rome happened!” the goddess said bitterly. “See what they have done, making a Roman of me. They wish me to be their goddess? Then let them taste their own evil. Kill them, child.”

“No!”

“Then you are nothing.” The goddess turned to the subway map. Her expression softened, becoming confused and unfocused. “If I could find the route…the way home, then perhaps— But, no. Avenge me or leave me. You are no child of mine.”

Annabeth’s eyes stung. She thought of a thousand horrible things she wanted to say, but she couldn’t. She had turned and fled.

She’d tried to throw away the silver coin, but it simply reappeared in her pocket, the way Riptide did for Percy. Unfortunately, Annabeth’s drachma had no magical powers—at least nothing useful. It only gave her nightmares, and no matter what she tried, she couldn’t get rid of it.

Now, sitting in her cabin aboard the Argo II, she could feel the coin growing warm in her pocket. She stared at the model of the Parthenon on her computer screen and thought about the argument with Athena. Phrases she’d heard over the last few days swirled in her head: A talented friend, ready for her visitor. No one will retrieve that statue. Wisdom’s daughter walks alone.

She was afraid she finally understood what it all meant. She prayed to the gods that she was wrong.

A knock on her door made her jump.

She hoped it might be Percy, but instead Frank Zhang poked his head in.

“Um, sorry,” he said. “Could I—?”

She was so startled to see him, it took her a moment to realize he wanted to come in.

“Sure,” she said. “Yes.”

He stepped inside, looking around the cabin. There wasn’t much to see. On her desk sat a stack of books, a journal and pen, and a picture of her dad flying his Sopwith Camel biplane, grinning and giving the thumbs-up. Annabeth liked that photo. It reminded her of the time she’d felt closest to him, when he’d strafed an army of monsters with Celestial bronze machine guns just to protect her—pretty much the best present a girl could hope for.

Hanging from a hook on the wall was her New York Yankees cap, her most prized possession from her mom. Once, the cap had had the power to turn its wearer invisible. Since Annabeth’s argument with Athena, the cap had lost its magic. Annabeth wasn’t sure why, but she’d stubbornly brought it along on the quest. Every morning she would try it on, hoping it would work again. So far it had only served as a reminder of her mother’s wrath.

Otherwise, her cabin was bare. She kept it clean and simple, which helped her to think. Percy didn’t believe it because she always made excellent grades, but like most demigods, she was ADHD. When there were too many distractions in her personal space, she was never able to focus.

“So…Frank,” she ventured. “What can I do for you?”

Out of all the kids on the ship, Frank was the one she thought least likely to pay her a visit. She didn’t feel any less confused when he blushed and pulled his Chinese handcuffs out of his pocket.

“I don’t like being in the dark about this,” he muttered. “Could you show me the trick? I didn’t feel comfortable asking anyone else.”

Annabeth processed his words with a slight delay. Wait…Frank was asking her for help? Then it dawned on her: of course, Frank was embarrassed. Leo had been razzing him pretty hard. Nobody liked being a laughingstock. Frank’s determined expression said he never wanted that to happen again. He wanted to understand the puzzle, without the iguana solution.

Annabeth felt strangely honored. Frank trusted her not to make fun of him. Besides, she had a soft spot for anyone who was seeking knowledge—even about something as simple as Chinese handcuffs.

She patted the bunk next to her. “Absolutely. Sit down.”

Frank sat on the edge of the mattress, as if preparing for a quick escape. Annabeth took the Chinese handcuffs and held them next to her computer.

She hit the key for an infrared scan. A few seconds later a 3-D model of the Chinese handcuffs appeared on the screen. She turned the laptop so that Frank could see.

“How did you do that?” he marveled.

“Cutting-edge Ancient Greek technology,” she said. “Okay, look. The structure is a cylindrical biaxial braid, so it has excellent resilience.” She manipulated the image so it squeezed in and out like an accordion. “When you put your fingers inside, it loosens. But when you try to remove them, the circumference shrinks as the braid catches and tightens. There’s no way you can pull free by struggling.”

Frank stared at her blankly. “But what’s the answer?”

“Well…” She showed him some of her calculations—how the handcuffs could resist tearing under incredible stress, depending on the material used in the braid. “Pretty amazing for a woven structure, right? Doctors use it for traction, and electrical contractors—”