Ephialtes smiled at the demigods like he was really, really pleased to see them.

“At last!” he bellowed. “So very happy! Honestly, I didn’t think you’d make it past the nymphs, but it’s so much better that you did. Much more entertaining. You’re just in time for the main event!”

Jason and Piper closed ranks on either side of Percy. Having them there made him feel a little better. This giant was smaller than a lot of monsters he had faced, but something about him made Percy’s skin crawl. Ephialtes’s eyes danced with a crazy light.

“We’re here,” Percy said, which sounded kind of obvious once he had said it. “Let our friend go.”

“Of course!” Ephialtes said. “Though I fear he’s a bit past his expiration date. Otis, where are you?”

A stone’s throw away, the floor opened, and the other giant rose on a platform.

“Otis, finally!” his brother cried with glee. “You’re not dressed the same as me! You’re…” Ephialtes’s expression turned to horror. “What are you wearing?”

Otis looked like the world’s largest, grumpiest ballet dancer. He wore a skin-tight baby-blue leotard that Percy really wished left more to the imagination. The toes of his massive dancing slippers were cut away so that his snakes could protrude. A diamond tiara (Percy decided to be generous and think of it as a king’s crown) was nestled in his green, firecracker-braided hair. He looked glum and miserably uncomfortable, but he managed a dancer’s bow, which couldn’t have been easy with snake feet and a huge spear on his back.

“Gods and Titans!” Ephialtes yelled. “It’s showtime! What are you thinking?”

“I didn’t want to wear the gladiator outfit,” Otis complained. “I still think a ballet would be perfect, you know, while Armageddon is going on.” He raised his eyebrows hopefully at the demigods. “I have some extra costumes—”

“No!” Ephialtes snapped, and for once Percy was in agreement.

The purple-haired giant faced Percy. He grinned so painfully, he looked like he was being electrocuted.

“Please excuse my brother,” he said. “His stage presence is awful, and he has no sense of style.”

“Okay.” Percy decided not to comment on the Hawaiian shirt. “Now, about our friend…”

“Oh, him,” Ephialtes sneered. “We were going to let him finish dying in public, but he has no entertainment value. He’s spent days curled up sleeping. What sort of spectacle is that? Otis, tip over the jar.”

Otis trudged over to the dais, stopping occasionally to do a plié. He knocked over the jar, the lid popped off, and Nico di Angelo spilled out. The sight of his deathly pale face and too-skinny frame made Percy’s heart stop. Percy couldn’t tell whether he was alive or dead. He wanted to rush over and check, but Ephialtes stood in his way.

“Now we have to hurry,” said the Big F. “We should go through your stage directions. The hypogeum is all set!”

Percy was ready to slice this giant in half and get out of there, but Otis was standing over Nico. If a battle started, Nico was in no condition to defend himself. Percy needed to buy him some recovery time.

Jason raised his gold gladius. “We’re not going to be part of any show,” he said. “And what’s a hypo—whatever-you-call-it?”

“Hypogeum!” Ephialtes said. “You’re a Roman demigod, aren’t you? You should know! Ah, but I suppose if we do our job right down here in the underworks, you really wouldn’t know the hypogeum exists.”

“I know that word,” Piper said. “It’s the area under a coliseum. It housed all the set pieces and machinery used to create special effects.”

Ephialtes clapped enthusiastically. “Exactly so! Are you a student of the theater, my girl?”

“Uh…my dad’s an actor.”

“Wonderful!” Ephialtes turned toward his brother. “Did you hear that, Otis?”

“Actor,” Otis murmured. “Everybody’s an actor. No one can dance.”

“Be nice!” Ephialtes scolded. “At any rate, my girl, you’re absolutely right, but this hypogeum is much more than the stageworks for a coliseum. You’ve heard that in the old days some giants were imprisoned under the earth, and from time to time they would cause earthquakes when they tried to break free? Well, we’ve done much better! Otis and I have been imprisoned under Rome for eons, but we’ve kept busy building our very own hypogeum. Now we’re ready to create the greatest spectacle Rome has ever seen—and the last!”

At Otis’s feet, Nico shuddered. Percy felt like a hellhound hamster wheel somewhere in his chest had started moving again. At least Nico was alive. Now they just had to defeat the giants, preferably without destroying the city of Rome, and get out of here to find their friends.

“So!” Percy said, hoping to keep the giants’ attention on him. “Stage directions, you said?”

“Yes!” Ephialtes said. “Now, I know the bounty stipulates that you and the girl Annabeth should be kept alive if possible, but honestly, the girl is already doomed, so I hope you don’t mind if we deviate from the plan.”

Percy’s mouth tasted like bad nymph water. “Already doomed. You don’t mean she’s—”

“Dead?” the giant asked. “No. Not yet. But don’t worry! We’ve got your other friends locked up, you see.”

Piper made a strangled sound. “Leo? Hazel and Frank?”

“Those are the ones,” Ephialtes agreed. “So we can use them for the sacrifice. We can let the Athena girl die, which will please Her Ladyship. And we can use you three for the show! Gaea will be a bit disappointed, but really, this is a win-win. Your deaths will be much more entertaining.”

Jason snarled. “You want entertaining? I’ll give you entertaining.”

Piper stepped forward. Somehow she managed a sweet smile. “I’ve got a better idea,” she told the giants. “Why don’t you let us go? That would be an incredible twist. Wonderful entertainment value, and it would prove to the world how cool you are.”

Nico stirred. Otis looked down at him. His snaky feet flicked their tongues at Nico’s head.

“Plus!” Piper said quickly. “Plus, we could do some dance moves as we’re escaping. Perhaps a ballet number!”

Otis forgot all about Nico. He lumbered over and wagged his finger at Ephialtes. “You see? That’s what I was telling you! It would be incredible!”

For a second, Percy thought Piper was going to pull it off. Otis looked at his brother imploringly. Ephialtes tugged at his chin as if considering the idea.

At last he shook his head. “No…no, I’m afraid not. You see, my girl, I am the anti-Dionysus. I have a reputation to uphold. Dionysus thinks he knows parties? He’s wrong! His revels are tame compared to what I can do. That old stunt we pulled, for instance, when we piled up mountains to reach Olympus—”

“I told you that would never work,” Otis muttered.

“And the time my brother covered himself with meat and ran through an obstacle course of drakons—”

“You said Hephaestus-TV would show it during prime time,” Otis said. “No one even saw me.”

“Well, this spectacle will be even better,” Ephialtes promised. “The Romans always wanted bread and circuses—food and entertainment! As we destroy their city, I will offer them both. Behold, a sample!”

Something dropped from the ceiling and landed at Percy’s feet: a loaf of sandwich bread in a white plastic wrapper with red and yellow dots.

Percy picked it up. “Wonder bread?”

“Magnificent, isn’t it?” Ephialtes’s eyes danced with crazy excitement. “You can keep that loaf. I plan on distributing millions to the people of Rome as I obliterate them.”

“Wonder bread is good,” Otis admitted. “Though the Romans should dance for it.”

Percy glanced over at Nico, who was just starting to move. Percy wanted him to be at least conscious enough to crawl out of the way when the fighting started. And Percy needed more information from the giants about Annabeth, and where his other friends were being kept.

“Maybe,” Percy ventured, “you should bring our other friends here. You know, spectacular deaths…the more the merrier, right?”

“Hmm.” Ephialtes fiddled with a button on his Hawaiian shirt. “No. It’s really too late to change the choreography. But never fear. The circuses will be marvelous! Ah…not the modern sort of circus, mind you. That would require clowns, and I hate clowns.”

“Everyone hates clowns,” Otis said. “Even other clowns hate clowns.”

“Exactly,” his brother agreed. “But we have much better entertainment planned! The three of you will die in agony, up above, where all the gods and mortals can watch. But that’s just the opening ceremony! In the old days, games went on for days or weeks. Our spectacle—the destruction of Rome—will go on for one full month until Gaea awakens.”

“Wait,” Jason said. “One month, and Gaea wakes up?”

Ephialtes waved away the question. “Yes, yes. Something about August First being the best date to destroy all humanity. Not important! In her infinite wisdom, the Earth Mother has agreed that Rome can be destroyed first, slowly and spectacularly. It’s only fitting!”

“So…” Percy couldn’t believe he was talking about the end of the world with a loaf of Wonder bread in his hand. “You’re Gaea’s warm-up act.”

Ephialtes’s face darkened. “This is no warm-up, demigod! We’ll release wild animals and monsters into the streets. Our special effects department will produce fires and earthquakes. Sinkholes and volcanoes will appear randomly out of nowhere! Ghosts will run rampant.”

“The ghost thing won’t work,” Otis said. “Our focus groups say it won’t pull ratings.”

“Doubters!” Ephialtes said. “This hypogeum can make anything work!”

Ephialtes stormed over to a big table covered with a sheet. He pulled the sheet away, revealing a collection of levers and knobs almost as complicated-looking as Leo’s control panel on the Argo II.

“This button?” Ephialtes said. “This one will eject a dozen rabid wolves into the Forum. And this one will summon automaton gladiators to battle tourists at the Trevi Fountain. This one will cause the Tiber to flood its banks so we can reenact a naval battle right in the Piazza Navona! Percy Jackson, you should appreciate that, as a son of Poseidon!”

“Uh…I still think the letting us go idea is better,” Percy said.

“He’s right,” Piper tried again. “Otherwise we get into this whole confrontation thing. We fight you. You fight us. We wreck your plans. You know, we’ve defeated a lot of giants lately. I’d hate for things to get out of control.”

Ephialtes nodded thoughtfully. “You’re right.”