I stared at him. ‘You’re… you’re married? But I thought you got in trouble for chasing a wood nymph –’

  ‘My point is you heroes never change. You accuse us gods of being vain. You should look at yourselves. You take what you want, use whoever you have to, and then you betray everyone around you. So you’ll excuse me if I have no love for heroes. They are a selfish, ungrateful lot. Ask Ariadne. Or Medea. For that matter, ask Zoë Nightshade.’

  ‘What do you mean, ask Zoë?’

  He waved his hand dismissively. ‘Go. Follow your silly friends.’

  The vines uncurled from round my legs.

  I blinked in disbelief. ‘You’re… you’re letting me go? Just like that?’

  ‘The prophecy says at least two of you will die. Perhaps I’ll get lucky and you’ll be one of them. But mark my words, Son of Poseidon, live or die, you will prove no better than the other heroes.’

  With that, Dionysus snapped his fingers. His image folded up like a paper display. There was a pop and he was gone, leaving a faint scent of grapes that was quickly blown away by the wind.

  Too close, Blackjack said.

  I nodded, though I almost would have been less worried if Mr D had hauled me back to camp. The fact that he’d let me go meant he really believed we stood a fair chance of crashing and burning on this quest.

  ‘Come on, Blackjack,’ I said, trying to sound upbeat. ‘I’ll buy you some doughnuts in New Jersey.’

  As it turned out, I didn’t buy Blackjack doughnuts in New Jersey. Zoë drove south like a crazy person, and we were into Maryland before she finally pulled over at a service station. Blackjack nearly tumbled out of the sky, he was so tired.

  I’ll be okay, boss, he panted. Just… just catching my breath.

  ‘Stay here,’ I told him. ‘I’m going to scout.’

  ‘Stay here’ I can handle. I can do that.

  I put on my cap of invisibility and walked over to the convenience store. It was difficult not to sneak. I had to keep reminding myself that nobody could see me. It was hard, too, because I had to remember to get out of people’s way so they wouldn’t slam into me.

  I thought I’d go inside and warm up, maybe get a cup of hot chocolate or something. I had a little change in my pocket. I could leave it on the counter. I was wondering if the cup would turn invisible when I picked it up, or if I’d have to deal with a floating hot chocolate problem, when my whole plan was ruined by Zoë, Thalia, Bianca and Grover all coming out of the store.

  ‘Grover, are you sure?’ Thalia was saying.

  ‘Well… pretty sure. Ninety-nine per cent. Okay, eighty-five per cent.’

  ‘And you did this with acorns?’ Bianca asked, like she couldn’t believe it.

  Grover looked offended. ‘It’s a time-honoured tracking spell. I mean, I’m pretty sure I did it right.’

  ‘D.C. is about sixty miles from here,’ Bianca said. ‘Nico and I…’ She frowned. ‘We used to lived there. That’s… that’s strange. I’d forgotten.’

  ‘I dislike this,’ Zoë said. ‘We should go straight west. The prophecy said west.’

  ‘Oh, like your tracking skills are better?’ Thalia growled.

  Zoë stepped towards her. ‘You challenge my skills, you scullion? You know nothing of being a Hunter!’

  ‘Oh, scullion? You’re calling me a scullion? What the heck is a scullion?’

  ‘Whoa, you two,’ Grover said nervously. ‘Come on. Not again!’

  ‘Grover’s right,’ Bianca said. ‘D.C. is our best bet.’

  Zoë didn’t look convinced, but she nodded reluctantly. ‘Very well. Let us keep moving.’

  ‘You’re going to get us arrested, driving,’ Thalia grumbled. ‘I look closer to sixteen than you do.’

  ‘Perhaps,’ Zoë snapped. ‘But I have been driving since automobiles were invented. Let us go.’

  As Blackjack and I continued south, following the van, I wondered whether Zoë had been kidding. I didn’t know exactly when cars were invented, but I figured that was like prehistoric times – back when people watched black-and-white TV and hunted dinosaurs.

  How old was Zoë? And what had Mr D been talking about? What bad experience had she had with heroes?

  As we got closer to Washington, Blackjack started slowing down and dropping altitude. He was breathing heavily.

  ‘You okay?’ I asked him.

  Fine, boss. I could… I could take on an army.

  ‘You don’t sound so good.’ And suddenly I felt guilty, because I’d been running the pegasus for half a day, nonstop, trying to keep up with highway traffic. Even for a flying horse, that had to be rough.

  Don’t worry about me, boss! I’m a tough one.

  I figured he was right, but I also figured Blackjack would run himself into the ground before he complained, and I didn’t want that.

  Fortunately, the van started to slow down. It crossed the Potomac River into central Washington. I started thinking about air patrols and missiles and stuff like that. I didn’t know exactly how all those defences worked, and wasn’t sure if pegasi even showed up on your typical military radar, but I didn’t want to find out by getting shot out of the sky.

  ‘Set me down there,’ I told Blackjack. ‘That’s close enough.’

  Blackjack was so tired he didn’t complain. He dropped towards the Washington Monument and set me on the grass.

  The van was only a few blocks away. Zoë had parked at the kerb.

  I looked at Blackjack. ‘I want you to go back to camp. Get some rest. Graze. I’ll be fine.’

  Blackjack cocked his head sceptically. You sure, boss?

  ‘You’ve done enough already,’ I said. ‘I’ll be fine. And thanks a ton.’

  A ton of hay, maybe, Blackjack mused. That sounds good. All right, but be careful, boss. I got a feeling they didn’t come here to meet anything friendly and handsome like me.

  I promised to be careful. Then Blackjack took off, circling twice round the monument before disappearing into the clouds.

  I looked over at the white van. Everybody was getting out. Grover pointed towards one of the big buildings lining the mall. Thalia nodded, and the four of them trudged off into the cold wind.

  I started to follow. But then I froze.

  A block away, the door of a black sedan opened. A man with a grey military haircut got out. He was wearing dark shades and a black overcoat. Now, maybe in Washington, you’d expected guys like that to be everywhere. But it dawned on me that I’d seen this same car a couple of times on the highway, going south. It had been following the van.

  The guy took out his cell phone and said something into it. Then he looked around, like he was making sure the coast was clear, and started walking down the mall in the direction of my friends.

  The worst of it was: when he turned towards me, I recognized his face. It was Dr Thorn, the manticore from Westover Hall.

  Invisibility cap on, I followed Thorn from a distance. My heart was pounding. If he had survived that fall from the cliff, then Annabeth must have too. My dreams had been right. She was alive and being held prisoner.

  Thorn kept well back from my friends, careful not to be seen.

  Finally, Grover stopped in front of a big building that said AIR AND SPACE MUSEUM. The Smithsonian! I’d been here a million years ago with my mom, but everything had looked so much bigger then.

  Thalia checked the door. It was open, but there weren’t many people going in. Too cold, and it was school holidays. They slipped inside.

  Dr Thorn hesitated. I wasn’t sure why, but he didn’t go into the museum. He turned and headed across the mall. I made a split-second decision and followed him.

  Thorn crossed the street and climbed the steps of the Museum of Natural History. There was a big sign on the door. At first I thought it said CLOSED FOR PIRATE EVENT. Then I realized PIRATE must be PRIVATE.

  I followed Dr Thorn inside, through a huge chamber full of mastodons and dinosaur skeletons. There were voices up ahead, coming fr
om behind a set of closed doors. Two guards stood outside. They opened the doors for Thorn, and I had to sprint to get inside before they closed them again.

  Inside, what I saw was so terrible I almost gasped out loud, which probably would’ve got me killed.

  I was in a huge round room with a balcony ringing the second level. At least a dozen mortal guards stood on the balcony, plus two monsters – reptilian women with double-snake trunks instead of legs. I’d seen them before. Annabeth had called them Scythian dracaenae.

  But that wasn’t the worse of it. Standing between the snake women – I could swear he was looking straight down at me – was my old enemy Luke. He looked terrible. His skin was pale and his blond hair looked almost grey, as if he’d aged ten years in just a few months. The angry light in his eyes was still there, and so was the scar down the side of his face, where a dragon had once scratched him. But the scar was now ugly red, as though it had recently been reopened.

  Next to him, sitting down so that the shadows covered him, was another man. All I could see were his knuckles on the gilded arms of the chair, like a throne.

  ‘Well?’ asked the man in the chair. His voice was just like the one I’d heard in my dream – not as creepy as Kronos’s, but deeper and stronger, like the earth itself was talking. It filled the whole room even though he wasn’t yelling.

  Dr Thorn took off his shades. His two-coloured eyes, brown and blue, glittered with excitement. He made a stiff bow, then spoke in his weird French accent: ‘They are here, General.’

  ‘I know that, you fool,’ boomed the man. ‘But where?’

  ‘In the rocket museum.’

  ‘The Air and Space Museum,’ Luke corrected irritably.

  Dr Thorn glared at Luke. ‘As you say, sir.’

  I got the feeling Thorn would just as soon impale Luke with one of his spikes as call him sir.

  ‘How many?’ Luke asked.

  Thorn pretended not to hear.

  ‘How many?’ the General demanded.

  ‘Four, General,’ Thorn said. ‘The satyr, Grover Underwood. And the girl with the spiky black hair and the – how do you say – punk clothes, and the horrible shield.’

  ‘Thalia,’ Luke said.

  ‘And two other girls – Hunters. One wears a silver circlet.’

  ‘That one I know,’ the General growled.

  Everyone in the room shifted uncomfortably.

  ‘Let me take them,’ Luke said to the General. ‘We have more than enough –’

  ‘Patience,’ the General said. ‘They’ll have their hands full already. I’ve sent a little playmate to keep them occupied.’

  ‘But –’

  ‘We cannot risk you, my boy.’

  ‘Yes, boy,’ Dr Thorn said with a cruel smile. ‘You are much too fragile to risk. Let me finish them off.’

  ‘No.’ The General rose from his chair, and I got my first look at him.

  He was tall and muscular, with light brown skin and slicked-back dark hair. He wore an expensive brown silk suit like the guys on Wall Street wear, but you’d never mistake this dude for a broker. He had a brutal face, huge shoulders, and hands that could snap a flagpole in half. His eyes were like stone. I felt as if I were looking at a living statue. It was amazing he could even move.

  ‘You have already failed me, Thorn,’ he said.

  ‘But, General –’

  ‘No excuses!’

  Thorn flinched. I’d thought Thorn was scary when I first saw him in his black uniform at the military academy. But now, standing before the General, Thorn looked like a silly wannabe soldier. The General was the real deal. He didn’t need a uniform. He was a born commander.

  ‘I should throw you into the pits of Tartarus for your incompetence,’ the General said. ‘I send you to capture a child of the three elder gods, and you bring me a scrawny daughter of Athena.’

  ‘But you promised me revenge!’ Thorn protested. ‘A command of my own!’

  ‘I am Lord Kronos’s senior commander,’ the General said. ‘And I will choose lieutenants who get me results! It was only thanks to Luke that we salvaged our plan at all. Now get out of my sight, Thorn, until I find some other menial task for you.’

  Thorn’s face turned purple with rage. I thought he was going to start frothing at the mouth or shooting spines, but he just bowed awkwardly and left the room.

  ‘Now, my boy.’ The General turned to Luke. ‘The first thing we must do is isolate the half-blood Thalia. The monster we seek will then come to her.’

  ‘The Hunters will be difficult to dispose of,’ Luke said. ‘Zoë Nightshade –’

  ‘Do not speak her name!’

  Luke swallowed. ‘S-sorry, General. I just –’

  The General silenced him with a wave of his hand. ‘Let me show you, my boy, how we will bring the Hunters down.’

  He pointed to a guard on the ground level. ‘Do you have the teeth?’

  The guy stumbled forward with a ceramic pot. ‘Yes, General!’

  ‘Plant them,’ he said.

  In the centre of the room was a big circle of dirt, where I guess a dinosaur exhibit was supposed to go. I watched nervously as the guard took sharp white teeth out of the pot and pushed them into the soil. He smoothed them over while the General smiled coldly.

  The guard stepped back from the dirt and wiped his hands. ‘Ready, General!’

  ‘Excellent! Water them, and we will let them scent their prey.’

  The guard picked up a little tin watering can with daisies painted on it, which was kind of bizarre, because what he poured out wasn’t water. It was dark red liquid, and I got the feeling it wasn’t Hawaiian Punch.

  The soil began to bubble.

  ‘Soon,’ the General said, ‘I will show you, Luke, soldiers that will make your army from that little boat look insignificant.’

  Luke clenched his fists. ‘I’ve spent a year training my forces! When the Princess Andromeda arrives at the mountain, they’ll be the best –’

  ‘Ha!’ the General said. ‘I don’t deny your troops will make a fine honour guard for Lord Kronos. And you, of course, will have a role to play –’

  I thought Luke turned paler when the General said that.

  ‘– but under my leadership, the forces of Lord Kronos will increase a hundredfold. We will be unstoppable. Behold, my ultimate killing machines.’

  The soil erupted. I stepped back nervously.

  In each spot where a tooth had been planted, a creature was struggling out of the dirt. The first of them said:

  ‘Mew?’

  It was a kitten. A little orange tabby with stripes like a tiger. Then another appeared, until there were a dozen, rolling around and playing in the dirt.

  Everyone stared at them in disbelief. The General roared, ‘What is this? Cute cuddly kittens? Where did you find those teeth?’

  The guard who’d brought the teeth cowered in fear. ‘From the exhibit, sir! Just like you said. The saber-toothed tiger –’

  ‘No, you idiot! I said the tyrannosaurus! Gather up those… those infernal fuzzy little beasts and take them outside. And never let me see your face again.’

  The terrified guard dropped his watering can. He gathered up the kittens and scampered out of the room.

  ‘You!’ The General pointed to another guard. ‘Get me the right teeth. NOW!’

  The new guard ran off to carry out his orders.

  ‘Imbeciles,’ muttered the General.

  ‘This is why I don’t use mortals,’ Luke said. ‘They are unreliable.’

  ‘They are weak-minded, easily bought and violent,’ the General said. ‘I love them.’

  A minute later, the guard hustled into the room with his hands full of large pointy teeth.

  ‘Excellent,’ the General said. He climbed onto the balcony railing and jumped down, six metres.

  Where he landed, the marble floor cracked under his leather shoes. He stood, wincing, and rubbed his shoulders. ‘Curse my stiff neck.’

  ‘An
other hot pad, sir?’ a guard asked. ‘More Tylenol?’

  ‘No! It will pass.’ The General brushed off his silk suit, then snatched up the teeth. ‘I shall do this myself.’

  He held up one of the teeth and smiled. ‘Dinosaur teeth – ha! Those foolish mortals don’t even know when they have dragon teeth in their possession. And not just any dragon teeth. These come from the ancient Sybaris herself! They shall do nicely.’

  He planted them in the dirt, twelve in all. Then he scooped up the watering can. He sprinkled the soil with red liquid, tossed the can away, and held his arms out wide. ‘Rise!’

  The dirt trembled. A single, skeletal hand shot out of the ground, grasping at the air.

  The General looked up at the balcony. ‘Quickly, do you have the scent?’

  ‘Yesssss, lord,’ one of the snake ladies said. She took out a sash of silvery fabric, like the kind the Hunters wore.

  ‘Excellent,’ the General said. ‘Once my warriors catch its scent, they will pursue its owner relentlessly. Nothing can stop them, no weapons known to half-blood or Hunter. They will tear the Hunters and their allies to shreds. Toss it here!’

  As he said that, skeletons erupted from the ground. There were twelve of them, one for each tooth the General had planted. They were nothing like Halloween skeletons, or the kind you might see in cheesy movies. These were growing flesh as I watched, turning into men, but men with dull grey skin, yellow eyes and modern clothes – skintight grey vests, camo trousers and combat boots. If you didn’t look too closely, you could almost believe they were human, but their flesh was transparent and their bones shimmered underneath, like X-ray images.

  One of them looked straight at me, regarding me coldly, and I knew that no cap of invisibility would fool it.

  The snake lady released the scarf and it fluttered down towards the General’s hand. As soon as he gave it to the warriors, they would hunt Zoë and the other Hunters until they were extinct.

  I didn’t have time to think. I ran and jumped with all my might, ploughing into the warriors and snatching the scarf out of the air.