Every camper knew the story behind the tree. Six years ago, Grover, Annabeth, and two other demigods named Thalia and Luke had come to Camp Half-Blood chased by an army of monsters. When they got cornered on top of this hill, Thalia, a daughter of Zeus, had made her last stand here to give her friends time to reach safety. As she was dying, her father, Zeus, took pity on her and changed her into a pine tree. Her spirit had reinforced the magic borders of the camp, protecting it from monsters. The pine had been here ever since, strong and healthy.
“But now, its needles were yellow. A huge pile of dead ones littered the base of the tree. In the center of the trunk, three feet from the ground, was a puncture mark the size of a bullet hole, oozing green sap.
A sliver of ice ran through my chest. Now I understood why the camp was in danger. The magical borders were failing because Thalia’s tree was dying.
Someone had poisoned it. ----
“Chiron,” I said. “What about the tree? What happened?”
He shook his head sadly. “The poison used on Thalia’s pine is something from the Underworld, Percy. Some venom even I have never seen. It must have come from a monster quite deep in the pits of Tartarus.”
“Then we know who’s responsible. Kro—”
“Do not invoke the titan lord’s name, Percy. Especially not here, not now.”
“But last summer he tried to cause a civil war in Olympus! This has to be his idea. He’d get Luke to do it, that traitor.”
“Perhaps,” Chiron said. “But I fear I am being held responsible because I did not prevent it and I cannot cure it. The tree has only a few weeks of life left unless . . .”
“Unless what?” Annabeth asked.
“No,” Chiron said. “A foolish thought. The whole valley is feeling the shock of the poison. The magical borders are deteriorating. The camp itself is dying. Only one source of magic would be strong enough to reverse the poison, and it was lost centuries ago.” ---
After the satyrs filed in to dinner, the Hermes cabin brought up the rear. They were always the biggest cabin. Last summer, it had been led by Luke, the guy who’d fought with Thalia and Annabeth on top of Half-Blood Hill. For a while, before Poseidon had claimed me, I’d lodged in the Hermes cabin. Luke had befriended me . . . and then he’d tried to kill me.
---
[...] and they had those elfish features all Hermes’s kids had: upturned eyebrows, sarcastic smiles, a gleam in their eyes whenever they looked at you—like they were about to drop a firecracker down your shirt.
---
After lunch, I worked out in the arena with Apollo’s cabin. Swordplay had always been my strength. People said I was better at it than any camper in the last hundred years, except maybe Luke. People always compared me to Luke.
---
The whole hill seemed to be infected, dying from the poison that had sunk into the tree’s roots. The longer I sat there, the angrier I got.
Luke had done this. I remembered his sly smile, the dragon-claw scar across his face. He’d pretended to be my friend, and the whole time he’d been Kronos’s number-one servant.
I opened the palm of my hand. The scar Luke had given me last summer was fading, but I could still see it—a white asterisk-shaped wound where his pit scorpion had stung me.
I thought about what Luke had told me right before he’d tried to kill me: Good-bye, Percy. There is a new Golden Age coming. You won’t be part of it.
---
“Um, thanks,” I said. “But Lord Hermes, why are you helping me?”
He gave me a melancholy smile. “Perhaps because I hope that you can save many people on this quest, Percy. Not just your friend Grover.”
“I stared at him. “You don’t mean . . . Luke?”
Hermes didn’t answer.
“Look,” I said. “Lord Hermes, I mean, thanks and everything, but you might as well take back your gifts. Luke can’t be saved. Even if I could find him . . . he told me he wanted to tear down Olympus stone by stone. He betrayed everybody he knew. He—he hates you especially.”
Hermes gazed up at the stars. “My dear young cousin, if there’s one thing I’ve learned over the eons, it’s that you can’t give up on your family, no matter how tempting they make it. It doesn’t matter if they hate you, or embarrass you, or simply don’t appreciate your genius for inventing the Internet—”
“You invented the Internet?”
It was my idea, Martha said.
Rats are delicious, George said.
“It was my idea!” Hermes said. “I mean the Internet, not the rats. But that’s not the point. Percy, do you understand what I’m saying about family?”
“I—I’m not sure.”
“You will some day.” Hermes got up and brushed the sand off his legs. “In the meantime, I must be going.” ---
Then I heard another voice outside—one that chilled me worse than any monster’s.
“—only a matter of time. Don’t push me, Agrius!”
It was Luke, beyond a doubt. I could never forget his voice.
“I’m not pushing you!” another guy growled. His voice was deeper and even angrier than Luke’s. “I’m just saying, if this gamble doesn’t pay off—”
“It’ll pay off,” Luke snapped. “They’ll take the bait. Now, come, we’ve got to get to the admiralty suite and check on the casket.”
Their voices receded down the corridor.
Tyson whimpered. “Leave now?”
Annabeth and I exchanged looks and came to a silent agreement.
“We can’t,” I told Tyson.
“We have to find out what Luke is up to,” Annabeth agreed. “And if possible, we’re going to beat him up, bind him in chains, and drag him to Mount Olympus.”
---
We kept going down the corridor. I didn’t need maps anymore to know I was getting close to Luke. I sensed something cold and unpleasant—the presence of evil.
---
“A group of monsters had assembled in front of the candy store: a dozen Laistrygonian giants like the ones who’d attacked me with dodge balls, two hellhounds, and a few even stranger creatures—humanoid females with twin serpent tails instead of legs.
The monsters made a semicircle around a young guy in Greek armor who was hacking on a straw dummy. A lump formed in my throat when I realized the dummy was wearing an orange Camp Half-Blood T-shirt. As we watched, the guy in armor stabbed the dummy through its belly and ripped upward. Straw flew everywhere. The monsters cheered and howled.
Annabeth stepped away from the window. Her face was ashen.
“Come on,” I told her, trying to sound braver than I felt. “The sooner we find Luke the better.”
At the end of the hallway were double oak doors that looked like they must lead somewhere important. When we were thirty feet away, Tyson stopped. “Voices inside.”
“You can hear that far?” I asked.
Tyson closed his eye like he was concentrating hard. Then his voice changed, becoming a husky approximation of Luke’s. “—the prophecy ourselves. The fools “won’t know which way to turn.”
Before I could react, Tyson’s voice changed again, becoming deeper and gruffer, like the other guy we’d heard talking to Luke outside the cafeteria. “You really think the old horseman is gone for good?”
Tyson laughed Luke’s laugh. “They can’t trust him. Not with the skeletons in his closet. The poisoning of the tree was the final straw.”
Annabeth shivered. “Stop that, Tyson! How do you do that? It’s creepy.”
Tyson opened his eye and looked puzzled. “Just listening.”
“Keep going,” I said. “What else are they saying?”
Tyson closed his eye again.
He hissed in the gruff man’s voice: “Quiet!” Then Luke’s voice, whispering: “Are you sure?”
“Yes,” Tyson said in the gruff voice. “Right outside.”
Too late, I realized what was happening.
I just had time to say, “Run!” when the doors of the stateroom burst open and there was Luke, flanked by two hairy giants armed with javelins, their bronze tips aimed right at our chests.
“Well,” Luke said with a crooked smile. “If it isn’t my two favorite cousins. Come right in.”
SEA OF MONSTERS;
“But now, its needles were yellow. A huge pile of dead ones littered the base of the tree. In the center of the trunk, three feet from the ground, was a puncture mark the size of a bullet hole, oozing green sap.
A sliver of ice ran through my chest. Now I understood why the camp was in danger. The magical borders were failing because Thalia’s tree was dying.
Someone had poisoned it.
----
“Chiron,” I said. “What about the tree? What happened?”
He shook his head sadly. “The poison used on Thalia’s pine is something from the Underworld, Percy. Some venom even I have never seen. It must have come from a monster quite deep in the pits of Tartarus.”
“Then we know who’s responsible. Kro—”
“Do not invoke the titan lord’s name, Percy. Especially not here, not now.”
“But last summer he tried to cause a civil war in Olympus! This has to be his idea. He’d get Luke to do it, that traitor.”
“Perhaps,” Chiron said. “But I fear I am being held responsible because I did not prevent it and I cannot cure it. The tree has only a few weeks of life left unless . . .”
“Unless what?” Annabeth asked.
“No,” Chiron said. “A foolish thought. The whole valley is feeling the shock of the poison. The magical borders are deteriorating. The camp itself is dying. Only one source of magic would be strong enough to reverse the poison, and it was lost centuries ago.”
---
After the satyrs filed in to dinner, the Hermes cabin brought up the rear. They were always the biggest cabin. Last summer, it had been led by Luke, the guy who’d fought with Thalia and Annabeth on top of Half-Blood Hill. For a while, before Poseidon had claimed me, I’d lodged in the Hermes cabin. Luke had befriended me . . . and then he’d tried to kill me.
---
[...] and they had those elfish features all Hermes’s kids had: upturned eyebrows, sarcastic smiles, a gleam in their eyes whenever they looked at you—like they were about to drop a firecracker down your shirt.
---
After lunch, I worked out in the arena with Apollo’s cabin. Swordplay had always been my strength. People said I was better at it than any camper in the last hundred years, except maybe Luke. People always compared me to Luke.
---
The whole hill seemed to be infected, dying from the poison that had sunk into the tree’s roots. The longer I sat there, the angrier I got.
Luke had done this. I remembered his sly smile, the dragon-claw scar across his face. He’d pretended to be my friend, and the whole time he’d been Kronos’s number-one servant.
I opened the palm of my hand. The scar Luke had given me last summer was fading, but I could still see it—a white asterisk-shaped wound where his pit scorpion had stung me.
I thought about what Luke had told me right before he’d tried to kill me: Good-bye, Percy. There is a new Golden Age coming. You won’t be part of it.
---
“Um, thanks,” I said. “But Lord Hermes, why are you helping me?”
He gave me a melancholy smile. “Perhaps because I hope that you can save many people on this quest, Percy. Not just your friend Grover.”
“I stared at him. “You don’t mean . . . Luke?”
Hermes didn’t answer.
“Look,” I said. “Lord Hermes, I mean, thanks and everything, but you might as well take back your gifts. Luke can’t be saved. Even if I could find him . . . he told me he wanted to tear down Olympus stone by stone. He betrayed everybody he knew. He—he hates you especially.”
Hermes gazed up at the stars. “My dear young cousin, if there’s one thing I’ve learned over the eons, it’s that you can’t give up on your family, no matter how tempting they make it. It doesn’t matter if they hate you, or embarrass you, or simply don’t appreciate your genius for inventing the Internet—”
“You invented the Internet?”
It was my idea, Martha said.
Rats are delicious, George said.
“It was my idea!” Hermes said. “I mean the Internet, not the rats. But that’s not the point. Percy, do you understand what I’m saying about family?”
“I—I’m not sure.”
“You will some day.” Hermes got up and brushed the sand off his legs. “In the meantime, I must be going.”
---
Then I heard another voice outside—one that chilled me worse than any monster’s.
“—only a matter of time. Don’t push me, Agrius!”
It was Luke, beyond a doubt. I could never forget his voice.
“I’m not pushing you!” another guy growled. His voice was deeper and even angrier than Luke’s. “I’m just saying, if this gamble doesn’t pay off—”
“It’ll pay off,” Luke snapped. “They’ll take the bait. Now, come, we’ve got to get to the admiralty suite and check on the casket.”
Their voices receded down the corridor.
Tyson whimpered. “Leave now?”
Annabeth and I exchanged looks and came to a silent agreement.
“We can’t,” I told Tyson.
“We have to find out what Luke is up to,” Annabeth agreed. “And if possible, we’re going to beat him up, bind him in chains, and drag him to Mount Olympus.”
---
We kept going down the corridor. I didn’t need maps anymore to know I was getting close to Luke. I sensed something cold and unpleasant—the presence of evil.
---
“A group of monsters had assembled in front of the candy store: a dozen Laistrygonian giants like the ones who’d attacked me with dodge balls, two hellhounds, and a few even stranger creatures—humanoid females with twin serpent tails instead of legs.
“Scythian Dracaenae,” Annabeth whispered. “Dragon women.”
The monsters made a semicircle around a young guy in Greek armor who was hacking on a straw dummy. A lump formed in my throat when I realized the dummy was wearing an orange Camp Half-Blood T-shirt. As we watched, the guy in armor stabbed the dummy through its belly and ripped upward. Straw flew everywhere. The monsters cheered and howled.
Annabeth stepped away from the window. Her face was ashen.
“Come on,” I told her, trying to sound braver than I felt. “The sooner we find Luke the better.”
At the end of the hallway were double oak doors that looked like they must lead somewhere important. When we were thirty feet away, Tyson stopped. “Voices inside.”
“You can hear that far?” I asked.
Tyson closed his eye like he was concentrating hard. Then his voice changed, becoming a husky approximation of Luke’s. “—the prophecy ourselves. The fools “won’t know which way to turn.”
Before I could react, Tyson’s voice changed again, becoming deeper and gruffer, like the other guy we’d heard talking to Luke outside the cafeteria. “You really think the old horseman is gone for good?”
Tyson laughed Luke’s laugh. “They can’t trust him. Not with the skeletons in his closet. The poisoning of the tree was the final straw.”
Annabeth shivered. “Stop that, Tyson! How do you do that? It’s creepy.”
Tyson opened his eye and looked puzzled. “Just listening.”
“Keep going,” I said. “What else are they saying?”
Tyson closed his eye again.
He hissed in the gruff man’s voice: “Quiet!” Then Luke’s voice, whispering: “Are you sure?”
“Yes,” Tyson said in the gruff voice. “Right outside.”
Too late, I realized what was happening.
I just had time to say, “Run!” when the doors of the stateroom burst open and there was Luke, flanked by two hairy giants armed with javelins, their bronze tips aimed right at our chests.
“Well,” Luke said with a crooked smile. “If it isn’t my two favorite cousins. Come right in.”