“Gotcha!” shrieked Euryale. Percy turned as an arrow thudded into her forehead. Euryale tumbled into the fast lane. A truck slammed into her and carried her backward a hundred yards, but she just climbed over the cab, pulled the arrow out of her head, and launched back into the air.
Percy reached the door. “Thanks,” he told the guards. “Good shot.”
“That should’ve killed her!” the archer protested.
“Welcome to my world,” Percy muttered.
“Frank,” the girl said. “Get them inside, quick! Those are gorgons.”
“Gorgons?” The archer’s voice squeaked. It was hard to tell much about him under the helmet, but he looked stout like a wrestler, maybe fourteen or fifteen. “Will the door hold them?”
In Percy’s arms, June cackled. “No, no it won’t. Onward, Percy Jackson! Through the tunnel, over the river!”
“Percy Jackson?” The female guard was darker-skinned, with curly hair sticking out the sides of her helmet. She looked younger than Frank—maybe thirteen. Her sword scabbard came down almost to her ankle. Still, she sounded like she was the one in charge. “Okay, you’re obviously a demigod. But who’s the—?” She glanced at June. “Never mind. Just get inside. I’ll hold them off.”
“Hazel,” the boy said. “Don’t be crazy.”
“Go!” she demanded.
Frank cursed in another language—was that Latin?—and opened the door. “Come on!”
Percy followed, staggering under the weight of the old lady, who was definitely getting heavier. He didn’t know how that girl Hazel would hold off the gorgons by herself, but he was too tired to argue.
The tunnel cut through solid rock, about the width and height of a school hallway. At first, it looked like a typical maintenance tunnel, with electric cables, warning signs, and fuse boxes on the walls, lightbulbs in wire cages along the ceiling. As they ran deeper into the hillside, the cement floor changed to tiled mosaic. The lights changed to reed torches, which burned but didn’t smoke. A few hundred yards ahead, Percy saw a square of daylight.
The old lady was heavier now than a pile of sandbags. Percy’s arms shook from the strain. June mumbled a song in Latin, like a lullaby, which didn’t help Percy concentrate.
Behind them, the gorgons’ voices echoed in the tunnel. Hazel shouted. Percy was tempted to dump June and runback to help, but then the entire tunnel shook with the rumble of falling stone. There was a squawking sound, just like the gorgons had made when Percy had dropped a crate of bowling balls on them in Napa. He glanced back. The west end of the tunnel was now filled with dust.
“Shouldn’t we check on Hazel?” he asked.
“She’ll be okay—I hope,” Frank said. “She’s good underground. Just keep moving! We’re almost there.”
“Almost where?”
June chuckled. “All roads lead there, child. You should know that.”
“Detention?” Percy asked.
“Rome, child,” the old woman said. “Rome.”
Percy wasn’t sure he’d heard her right. True, his memory was gone. His brain hadn’t felt right since he had woken up at the Wolf House. But he was pretty sure Rome wasn’t in California.
They kept running. The glow at the end of the tunnel grew brighter, and finally they burst into sunlight.
Percy froze. Spread out at his feet was a bowl-shaped valley several miles wide. The basin floor was rumpled with smaller hills, golden plains, and stretches of forest. A small clear rivercut a winding course from a lake in the center and around the perimeter, like a capital G.
The geography could’ve been anywhere in northern California—live oaks and eucalyptus trees, gold hills and blue skies. That big inland mountain—what was it called, Mount Diablo?—rose in the distance, right where it should be.
But Percy felt like he’d stepped into a secret world. In the center of the valley, nestled by the lake, was a small city of white marble buildings with red-tiled roofs. Some had domes and columned porticoes, like national monuments. Others looked like palaces, with golden doors and large gardens. He could see an open plaza with freestanding columns, fountains, and statues. A five-story-tall Roman coliseum gleamed in the sun, next to a long oval arena like a racetrack.