Harry and Ron hurried down the stone steps into the darkness, their footsteps echoing particularly loudly as Crabbe’s and Goyle’s huge feet hit the floor, feeling that this wasn’t going to be as easy as they had hoped.

The labyrinthine passages were deserted. They walked deeper and deeper under the school, constantly checking their watches to see how much time they had left. After a quarter of an hour, just when they were getting desperate, they heard a sudden movement ahead.

“Ha!” said Ron excitedly. “There’s one of them now!”

The figure was emerging from a side room. As they hurried nearer, however, their hearts sank. It wasn’t a Slytherin, it was Percy.

“What’re you doing down here?” said Ron in surprise.

Percy looked affronted.

“That,” he said stiffly, “is none of your business. It’s Crabbe, isn’t it?”

“Wh — oh, yeah,” said Ron.

“Well, get off to your dormitories,” said Percy sternly. “It’s not safe to go wandering around dark corridors these days.”

“You are,” Ron pointed out.

“I,” said Percy, drawing himself up, “am a prefect. Nothing’s about to attack me.”

A voice suddenly echoed behind Harry and Ron. Draco Malfoy was strolling toward them, and for the first time in his life, Harry was pleased to see him.

“There you are,” he drawled, looking at them. “Have you two been pigging out in the Great Hall all this time? I’ve been looking for you; I want to show you something really funny.”

Malfoy glanced witheringly at Percy.

“And what’re you doing down here, Weasley?” he sneered.

Percy looked outraged.

“You want to show a bit more respect to a school prefect!” he said. “I don’t like your attitude!”

Malfoy sneered and motioned for Harry and Ron to follow him. Harry almost said something apologetic to Percy but caught himself just in time. He and Ron hurried after Malfoy, who said as they turned into the next passage, “That Peter Weasley —”

“Percy,” Ron corrected him automatically.

“Whatever,” said Malfoy. “I’ve noticed him sneaking around a lot lately. And I bet I know what he’s up to. He thinks he’s going to catch Slytherin’s heir single-handed.”

He gave a short, derisive laugh. Harry and Ron exchanged excited looks.

Malfoy paused by a stretch of bare, damp stone wall.

“What’s the new password again?” he said to Harry.

“Er —” said Harry.

“Oh, yeah — pure-blood!” said Malfoy, not listening, and a stone door concealed in the wall slid open. Malfoy marched through it, and Harry and Ron followed him.

The Slytherin common room was a long, low underground room with rough stone walls and ceiling from which round, greenish lamps were hanging on chains. A fire was crackling under an elaborately carved mantelpiece ahead of them, and several Slytherins were silhouetted around it in high-backed chairs.

“Wait here,” said Malfoy to Harry and Ron, motioning them to a pair of empty chairs set back from the fire. “I’ll go and get it my father’s just sent it to me —”

Wondering what Malfoy was going to show them, Harry and Ron sat down, doing their best to look at home.

Malfoy came back a minute later, holding what looked like a newspaper clipping. He thrust it under Ron’s nose.

“That’ll give you a laugh,” he said.

Harry saw Ron’s eyes widen in shock. He read the clipping quickly, gave a very forced laugh, and handed it to Harry.

It had been clipped out of the Daily Prophet , and it said:

INQUIRY AT THE MINISTRY OF MAGIC

Arthur Weasley, Head of the Misuse of Muggle Artifacts Office, was today fined fifty Galleons for bewitching a Muggle car.

Mr. Lucius Malfoy, a governor of Hogwarts School of Witchcraft and Wizardry, where the enchanted car crashed earlier this year, called today for Mr. Weasley’s resignation. “Weasley has brought the Ministry into disrepute,” Mr. Malfoy told our reporter. “He is clearly unfit to draw up our laws and his ridiculous Muggle Protection Act should be scrapped immediately.”

Mr. Weasley was unavailable for comment, although his wife told reporters to clear off or she’d set the family ghoul on them.

“Well?” said Malfoy impatiently as Harry handed the clipping back to him. “Don’t you think it’s funny?”

“Ha, ha,” said Harry bleakly.

“Arthur Weasley loves Muggles so much he should snap his wand in half and go and join them,” said Malfoy scornfully. “You’d never know the Weasleys were pure-bloods, the way they behave.”

Ron’s — or rather, Crabbe’s — face was contorted with fury.

“What’s up with you, Crabbe?” snapped Malfoy.

“Stomachache,” Ron grunted.

“Well, go up to the hospital wing and give all those Mudbloods a kick from me,” said Malfoy, snickering. “You know, I’m surprised the Daily Prophet hasn’t reported all these attacks yet,” he went on thoughtfully. “I suppose Dumbledore’s trying to hush it all up. He’ll be sacked if it doesn’t stop soon. Father’s always said old Dumbledore’s the worst thing that’s ever happened to this place. He loves Muggle-borns. A decent headmaster would never’ve let slime like that Creevey in.”

Malfoy started taking pictures with an imaginary camera and did a cruel but accurate impression of Colin: “`Potter, can I have your picture, Potter? Can I have your autograph? Can I lick your shoes, please, Potter?”’

He dropped his hands and looked at Harry and Ron.

“What’s the matter with you two?”

Far too late, Harry and Ron forced themselves to laugh, but Malfoy seemed satisfied; perhaps Crabbe and Goyle were always slow on the uptake.

“Saint Potter, the Mudbloods’ friend,” said Malfoy slowly. “He’s another one with no proper wizard feeling, or he wouldn’t go around with that jumped up Granger Mudblood. And people think he’s Slytherin’s heir!”

Harry and Ron waited with bated breath: Malfoy was surely seconds away from telling them it was him — but then “I wish I knew who it is,” said Malfoy petulantly. “I could help them.”

Ron’s jaw dropped so that Crabbe looked even more clueless than usual. Fortunately, Malfoy didn’t notice, and Harry, thinking fast, said, “You must have some idea who’s behind it all…”

“You know I haven’t, Goyle, how many times do I have to tell you?” snapped Malfoy. “And Father won’t tell me anything about the last time the Chamber was opened either. Of course, it was fifty years ago, so it was before his time, but he knows all about it, and he says that it was all kept quiet and it’ll look suspicious if I know too much about it. But I know one thing — last time the Chamber of Secrets was opened, a Mudblood died. So I bet it’s a matter of time before one of them’s killed this time…I hope it’s Granger,” he said with relish.

Ron was clenching Crabbe’s gigantic fists. Feeling that it would be a bit of a giveaway if Ron punched Malfoy, Harry shot him a warning look and said, “D’you know if the person who opened the Chamber last time was caught?”

“Oh, yeah…whoever it was was expelled,” said Malfoy. “They’re probably still in Azkaban.”

“Azkaban?” said Harry, puzzled.

“Azkaban — the wizard prison, Goyle,” said Malfoy, looking at him in disbelief “Honestly, if you were any slower, you’d be going backward.”

He shifted restlessly in his chair and said, “Father says to keep my head down and let the Heir of Slytherin get on with it. He says the school needs ridding of all the Mudblood filth, but not to get mixed up in it. Of course, he’s got a lot on his plate at the moment. You know the Ministry of Magic raided our manor last week?”

Harry tried to force Goyle’s dull face into a look of concern.

“Yeah…” said Malfoy. “Luckily, they didn’t find much. Father’s got some very valuable Dark Arts stuff. But luckily, we’ve got our own secret chamber under the drawing-room floor —”

“Ho!” said Ron.

Malfoy looked at him. So did Harry. Ron blushed. Even his hair was turning red. His nose was also slowly lengthening — their hour was up, Ron was turning back into himself, and from the look of horror he was suddenly giving Harry, he must be, too.

They both jumped to their feet.

“Medicine for my stomach,” Ron grunted, and without further ado they sprinted the length of the Slytherin common room, hurled themselves at the stone wall, and dashed up the passage, hoping against hope that Malfoy hadn’t noticed anything. Harry could feel his feet slipping around in Goyle’s huge shoes and had to hoist up his robes as he shrank; they crashed up the steps into the dark entrance hall, which was full of a muffled pounding coming from the closet where they’d locked Crabbe and Goyle. Leaving their shoes outside the closet door, they sprinted in their socks up the marble staircase toward Moaning Myrtle’s bathroom.

“Well, it wasn’t a complete waste of time,” Ron panted, closing the bathroom door behind them. “I know we still haven’t found out who’s doing the attacks, but I’m going to write to Dad tomorrow and tell him to check under the Malfoys’ drawing room.”

Harry checked his face in the cracked mirror. He was back to normal. He put his glasses on as Ron hammered on the door of Hermione’s stall.

“Hermione, come out, we’ve got loads to tell you —”

“Go away!” Hermione squeaked.

Harry and Ron looked at each other.

“What’s the matter?” said Ron. “You must be back to normal by now, we are.”

But Moaning Myrtle glided suddenly through the stall door. Harry had never seen her looking so happy.

“Ooooooh, wait till you see,” she said. “It’s awful —”

They heard the lock slide back and Hermione emerged, sobbing, her robes pulled up over her head.

“What’s up?” said Ron uncertainly. “Have you still got Millicent’s nose or something?”

Hermione let her robes fall and Ron backed into the sink.

Her face was covered in black fur. Her eyes had turned yellow and there were long, pointed ears poking through her hair.

“It was a c-cat hair!” she howled. “M-Millicent Bulstrode m-must have a cat! And the p-potion isn’t supposed to be used for animal transformations!”

“Uh-oh,” said Ron.

“You’ll be teased something dreadful,” said Myrtle happily.

“It’s okay, Hermione,” said Harry quickly. “We’ll take you up to the hospital wing. Madam Pomfrey never asks too many questions…”

It took a long time to persuade Hermione to leave the bathroom. Moaning Myrtle sped them on their way with a hearty guffaw. “Wait till everyone finds out you’ve got a tail!”