They advanced around the corner again, shaking the Clankers, and the noise echoed off the rocky walls, grossly magnified, so that the inside of Harry’s skull seemed to vibrate with the den. The dragon let out another hoarse roar, then retreated. Harry could see it trembling, and as they drew nearer he saw the scars made by vicious slashes across its face, and guess that it had been taught to fear hot swords when it heard the sound of the Clankers.

“Make him press his hand to the door!” Griphook urged Harry, who turned his wand again upon Bogrod. The old goblin obeyed, pressing his palm to the wood, and the door of the vault melted away to reveal a cavelike opening crammed from floor to ceiling with golden coins and goblets, silver armor, the skins of strange creatures—some with long spines, other with drooping wings—potions in jeweled flasks, and a skull still wearing a crown. “Search, fast!” said Harry as they all hurried inside the vault. He had described Hufflepuff’s cap to Ron and Hermione, but if it was the other, unknown Horcrux that resided in this vault, he did not know what it looked like. He barely had time to glance around, however, before there was a muffled clunk from behind them: The door had reappeared, sealing them inside the vault, and they were plunged into total darkness.

“No matter, Bogrod will be able to release us!” said Griphook as Ron gave a shout of surprise. “Light your wands, can’t you? And hurry, we have little time!”

“Lumos!”

Harry shone his lit wand around the vault: Its beam fell upon glittering jewels; he saw the fake sword of Gryffindor lying on a high shelf amongst a jumble of chains. Ron and Hermione had lit their wands too, and were now examining the piles of objects surrounding them.

“Harry, could this be—? Aargh!”

Hermione screamed in pain, and Harry turned his wand on her in time to see a jeweled goblet tumbling from her grip. But as it fell, it split, became a shower of goblets, so that a second later, with a great clatter, the floor was covered in identical cups rolling in every direction, the original impossible to discern amongst them.

“It burned me!” moaned Hermione, sucking her blistered fingers.

“They have added Germino and Flagrante Curses!” said Griphook.

“Everything you touch will burn and multiply, but the copies are worthless—and if you continue to handle the treasure, you will eventually be crushed to death by the weight of expanding gold!”

“Okay, don’t touch anything!” said Harry desperately, but even as he said it, Ron accidentally nudged one of the fallen goblets with his foot, and twenty more exploded into being while Ron hopped on the spot, part of his shoe burned away by contact with the hot metal.

“Stand still, don’t move!” said Hermione, clutching at Ron.

“Just look around!” said Harry. “Remember, the cup’s small and gold, it’s got a badger engraved on it, two handles—otherwise see if you can spot Ravenclaw’s symbol anywhere, the eagle—”

They directed their wands into every nook and crevice, turning cautiously on the spot. It was impossible not to brush up against anything; Harry sent a great cascade of fake Galleons onto the ground where they joined the goblets, and now there was scarcely room to place their feet, and the glowing gold blazed with heat, so that the vault felt like a furnace. Harry’s wandlight passed over shields and goblin-made helmets set on shelves rising to the ceiling; higher and higher he raised the beam, until suddenly it found an object that made his heart skip and his hand tremble.

“It’s there, it’s up there!”

Ron and Hermione pointed there wands at it too, so that the little golden cup sparkled in a three-way spotlight: the cup that had belonged to Helga Hufflepuff, which had passed into the possession of Hepzibah Smith, from whom it had been stolen by Tom Riddle.

“And how the hell are we going to get up there without touching anything?” asked Ron.

“Accio Cup!” cried Hermione, who had evidently forgotten in her desperation what Griphook had told them during their planning sessions.

“No use, no use!” snarled the goblin.

“Then what do we do?” said Harry, glaring at the goblin. “If you want the sword, Griphook, then you’ll have to help us more than—wait! Can I touch stuff with the sword? Hermione, give it here!”

Hermione fumbled insider her robes, drew out a beaded bag, rummaged for a few seconds, then removed the shining sword. Harry seized it by its rubied hilt and touched the tip of the blade to a silver flagon nearby, which did not multiply.

“If I can just poke the sword through a handle—but how am I going to get up there?”

The shelf on which the cup reposed was out of reach for any of them, even Ron, who was tallest. The heat from the enchanted treasure rose in waves, and sweat ran down Harry’s face and back as he struggled to think of a way up to the cup; and then he heard the dragon roar on the other side of the vault door, and the sound of clanking growing louder and louder.

They were truly trapped now: There was no way out except through the door, and a horde of goblins seemed to be approaching on the other side. Harry looked at Ron and Hermione and saw terror in their faces.

“Hermione,” said Harry, as the clanking grew louder, “I’ve got to get up there, we’ve got to get rid of it—”

She raised her wand, pointed it at Harry, and whispered, “Levicorpus.”

Hoisted into the air by his ankle, Harry hit a suit of armor and replicas burst out of it like white-hot bodies, filling the cramped space. With screams of pain, Ron, Hermione, and the two goblins were knocked aside into other objects, which also began to replicate. Half buried in a rising tide of red-hot treasure, they struggled and yelled has Harry thrust the sword through the handle of Hufflepuff’s cup, hooking it onto the blade.

“Impervius!” screeched Hermione in an attempt to protect herself, Ron, and the goblins from the burning metal.

Then the worst scream yet made Harry look down: Ron and Hermione were waist deep in treasure, struggling to keep Bogrod from slipping beneath the rising tide, but Griphook had sunk out of sight; and nothing but the tips of a few long fingers were left in view.

Harry seized Griphook’s fingers and pulled. The blistered goblin emerged by degrees, howling.

“Liberatocorpus!” yelled Harry, and with a crash he and Griphook landed on the surface of the swelling treasure, and the sword flew out of Harry’s hand.

“Get it!” Harry yelled, fighting the pain of the hot metal on his skin, as Griphook clambered onto his shoulders again, determined to avoid the swelling mass of red-hot objects. “Where’s the sword? It had the cup on it!”

The clanking on the other side of the door was growing deafening—it was too late—

“There!”

It was Griphook who had seen it and Griphook who lunged, and in that instant Harry knew that the goblin had never expected them to keep their word. One hand holding tightly to a fistful of Harry’s hair, to make sure he did not fall into the heaving sea of burning gold, Griphook seized the hilt of the sword and swung it high out of Harry’s reach. The tiny golden cup, skewered by the handle on the sword’s blade was flung into the air. The goblin astride him, Harry dived and caught it, and although he could feel it scalding his flesh he did not relinquish it, even while countless Hufflepuff cups burst from his fist, raining down upon him as the entrance of the vault opened up again and he found himself sliding uncontrollably on an expanding avalanche of fiery gold and silver that bore him, Ron, Hermione into the outer chamber.

Hardly aware of the pain from the burns covering his body, and still borne along the swell of replicating treasure, Harry shoved the cup into his pocket and reached up to retrieve the sword, but Griphook was gone. Sliding from Harry’s shoulders the moment he could, he had sprinted for cover amongst the surrounding goblins, brandishing the sword and crying, “Thieves! Thieves! Help! Thieves!” He vanished into the midst of the advancing crowd, all of whom were holding daggers and who accepted him without question.