His vision blurred. Claws grabbed his arms and lifted him into the air.
Below, train wheels squealed and metal crashed. Glass shattered. Passengers screamed.
When his eyesight cleared, he saw the beast that was carrying him aloft. It had the body of a panther—sleek, black, and feline—with the wings and head of an eagle. Its eyes glowed blood-red.
Percy squirmed. The monster’s front talons were wrapped around his arms like steel bands. He couldn’t free himself or reach his sword. He rose higher and higher in the cold wind. Percy had no idea where the monster was taking him, but he was pretty sure he wouldn’t like it when he got there.
He yelled—mostly out of frustration. Then something whistled by his ear. An arrow sprouted from the monster’s neck. The creature shrieked and let go.
Percy fell, crashing through tree branches until he slammed into a snowbank. He groaned, looking up at a massive pine tree he’d just shredded.
He managed to stand. Nothing seemed broken. Frank stood to his left, shooting down the creatures as fast as he could. Hazel was at his back, swinging her sword at any monster that came close, but there were too many swarming around them—at least a dozen.
Percy drew Riptide. He sliced the wing off one monster and sent it spiraling into a tree, then sliced through another that burst into dust. But the defeated ones began to re-form immediately.
“What are these things?” he yelled.
“Gryphons!” Hazel said. “We have to get them away from the train!”
Percy saw what she meant. The train cars had fallen over, and their roofs had shattered. Tourists were stumbling around in shock. Percy didn’t see anybody seriously injured, but the gryphons were swooping toward anything that moved. The only thing keeping them away from the mortals was a glowing gray warrior in camouflage—Frank’s pet spartus.
Percy glanced over and noticed Frank’s spear was gone. “Used your last charge?”
“Yeah.” Frank shot another gryphon out of the sky. “I had to help the mortals. The spear just dissolved.”
Percy nodded. Part of him was relieved. He didn’t like the skeleton warrior. Part of him was disappointed, because that was one less weapon they had at their disposal. But he didn’t fault Frank. Frank had done the right thing.
“Let’s move the fight!” Percy said. “Away from the tracks!” They stumbled through the snow, smacking and slicing gryphons that re-formed from dust every time they were killed.
Percy had had no experience with gryphons. He’d always imagined them as huge noble animals, like lions with wings, but these things reminded him more of vicious pack hunters—flying hyenas.
About fifty yards from the tracks, the trees gave way to an open marsh.
The ground was so spongy and icy, Percy felt like he was racing across Bubble Wrap. Frank was running out of arrows. Hazel was breathing hard. Percy’s own sword swings were getting slower. He realized they were alive only because the gryphons weren’t trying to kill them. The gryphons wanted to pick them up and carry them off somewhere.
Maybe to their nests, Percy thought.
Then he tripped over something in the tall grass—a circle of scrap metal about the size of a tractor tire. It was a massive bird’s nest—a gryphon’s nest
—the bottom littered with old pieces of jewelry, an Imperial gold dagger, a dented centurion’s badge, and two pumpkin-sized eggs that looked like real gold.
Percy jumped into the nest. He pressed his sword tip against one of the eggs. “Back off, or I break it!”
The gryphons squawked angrily. They buzzed around the nest and snapped their beaks, but they didn’t attack. Hazel and Frank stood back to back with Percy, their weapons ready.
“Gryphons collect gold,” Hazel said. “They’re crazy for it. Look—more nests over there.”
Frank nocked his last arrow. “So if these are their nests, where were they trying to take Percy? That thing was flying away with him.”
Percy’s arms still throbbed where the gryphon had grabbed him. “Alcyoneus,” he guessed. “Maybe they’re working for him. Are these things smart enough to take orders?”
“I don’t know,” Hazel said. “I never fought them when I lived here. I just read about them at camp.”
“Weaknesses?” Frank asked. “Please tell me they have weaknesses.”
Hazel scowled. “Horses. They hate horses—natural enemies, or something. I wish Arion was here!”
The gryphons shrieked. They swirled around the nest with their red eyes glowing.
“Guys,” Frank said nervously, “I see legion relics in this nest.” “I know,” Percy said.
“That means other demigods died here, or—” “Frank, it’ll be okay,” Percy promised.
One of the gryphons dived in. Percy raised his sword, ready to stab the egg. The monster veered off, but the other gryphons were losing their patience. Percy couldn’t keep this standoff going much longer.
He glanced around the fields, desperately trying to formulate a plan. About a quarter mile away, a Hyperborean giant was sitting in the bog, peacefully picking mud from between his toes with a broken tree trunk.
“I’ve got an idea,” Percy said. “Hazel—all the gold in these nests. Do you think you can use it to cause a distraction?”
“I—I guess.”
“Just give us enough time for a head start. When I say go, run for that giant.”
Frank gaped at him. “You want us to run toward a giant?” “Trust me,” Percy said. “Ready? Go!”
Hazel thrust her hand upward. From a dozen nests across the marsh, golden objects shot into the air—jewelry, weapons, coins, gold nuggets, and most importantly, gryphon eggs. The monsters shrieked and flew after their eggs, frantic to save them.
Percy and his friends ran. Their feet splashed and crunched through the frozen marsh. Percy poured on speed, but he could hear the gryphons closing behind them, and now the monsters were really angry.
The giant hadn’t noticed the commotion yet. He was inspecting his toes for mud, his face sleepy and peaceful, his white whiskers glistening with ice crystals. Around his neck was a necklace of found objects—garbage cans, car doors, moose antlers, camping equipment, even a toilet. Apparently he’d been cleaning up the wilderness.
Percy hated to disturb him, especially since it meant taking shelter under the giant’s thighs, but they didn’t have much choice.
“Under!” he told his friends. “Crawl under!”
They scrambled between the massive blue legs, flattening themselves in the mud and inching as close as possible to his loincloth. Percy tried to breathe through his mouth, but it was hardly a pleasant hiding spot.
“What’s the plan?” Frank whispered. “Get flattened by a blue backside?”
“Just lay low,” Percy replied. “Only move if we have to.”
A swarm of angry gryphons descended, their beaks, talons, and wings thrashing as they tried to get under the giant’s legs.
The giant rumbled in surprise and shifted. Percy barely rolled away in time to avoid being crushed by his hairy rear. The Hyperborean grunted, clearly irritated, and swatted at the gryphons. They squawked in outrage, pecking at his legs and hands.
“Ruh?” the giant bellowed. “Ruh!”
He took a deep breath and exhaled a blast of icy air. Even beneath the giant’s legs, Percy felt the temperature plummet. The gryphons fell silent, replaced by the dull thud of heavy objects hitting the mud.
“Let’s go,” Percy urged his friends. “Carefully.”
They wriggled out from under the giant. All around the marsh, trees were coated in frost, and a wide area of the bog lay blanketed in fresh snow. Frozen gryphons jutted out of the ground like feathery popsicles, their wings still spread, beaks agape, eyes wide in surprise.
Percy and his friends scrambled away, trying to stay out of the giant’s line of sight, but he was too preoccupied to notice them. He was busy figuring out how to string a frozen gryphon onto his necklace.
“Percy…” Hazel said, wiping ice and mud from her face. “How did you know the giant could do that?”
“I almost got hit by Hyperborean breath once,” he replied. “We’d better move. The gryphons won’t stay frozen forever.”
