As they entered November, the weather turned very cold. The mountains around the school became icy grey and the lake like chilled steel. Every morning the ground was covered in frost. Hagrid could be seen from the upstairs windows defrosting broomsticks on the Quidditch field, bundled up in a long moleskin overcoat, rabbit fur gloves, and enormous beaverskin boots.

Hermione had become a bit more relaxed about breaking rules since Harry, Cassie and Ron had saved her from the mountain troll, and she was much nicer for it. The day before Harry's first Quidditch match the four of them were out in the freezing courtyard during break, and she had conjured them up a bright blue fire that could be carried around in a jam jar. They were standing with their backs to it, getting warm, when Snape crossed the yard. They all noticed at once that Snape was limping. Harry, Cassie, Ron, and Hermione moved closer together to block the fire from view; they were sure it wouldn't be allowed. Unfortunately, something about their guilty faces caught Snape's eye. He limped over. He hadn't seen the fire, but he seemed to be looking for a reason to tell them off anyway.

"What's that you've got there, Potter?"

It was the book Hermione had lent him, Quidditch Through the Ages. Harry showed him.

"Library books are not to be taken outside the school," said Snape. "Give it to me. Five points from Gryffindor."

"He's just made that rule up," Harry muttered angrily as Snape limped away. "Wonder what's wrong with his leg?"

"Dunno, but I hope it's really hurting him," said Ron bitterly.

The Gryffindor common room was very noisy that evening. Harry, Cassie, Ron and Hermione sat together next to a window. Harry sighed and stood up.

"I'm going to get 'Quidditch through the ages' back off Snape."

They all watched him walk out the portrait hole.

"Do you reckon Snape'll give it back ?" asked Ron.

"Ha !" said Cassie "No chance."

"Hermione…" said Ron, after a few minutes.

"Mmm," replied Hermione, not looking up from her book.

"Do you possibly think you could-" Ron began.

"No!" snapped Hermione, slamming her book closed. "I'm not going to let you copy off my Charms essay, you'll never learn."

"Go on Hermione," Cassie wheeled "I just need another couple inches."

"Oh," said Hermione, throwing her hands up in the air, "I'll just read through them for you, pass Harry's as well."

Cassie gave her roll of parchment to Hermione and settled back into her armchair, watching drowsily as she began scratching out sentences and correcting them.

Half an hour later, Harry stumbled back into the common room, wide eyed.

"Did you get it?" Cassie asked as Harry came over to join them. "What's the matter?"

In a low whisper, Harry told them about Snape and his bandaged leg.

"You know what this means?" Harry finished breathlessly. "He tried to get past that three-headed dog at Halloween! That's where he was going when we saw him, he's after whatever it's guarding! And I'd bet my broomstick he let that troll in, to make a diversion!"

"No, he wouldn't," said Hermione. "I know he's not very nice, but he wouldn't try and steal something Dumbledore was keeping safe."

"Honestly, Hermione, you think all teachers are saints or something," snapped Ron. "I'm with Harry. I wouldn't put anything past Snape. But what's he after? What's that dog guarding?"

The next morning dawned very bright and cold. The Great Hall was full of the delicious smell of fried sausages and the cheerful chatter of everyone looking forward to a good Quidditch match.

"You've got to eat some breakfast." said Cassie firmly

"I don't want anything." replied Harry.

"Just a bit of toast," wheedled Hermione.

"I'm not hungry."said Harry

"Or some eggs," suggested Ron

"I told you, I'm not hungry." said Harry, putting his head on the table.

"Harry, you need your strength," said Seamus. "Seekers are always the ones who get clobbered by the other team."

"Thanks, Seamus," mumbled Harry.

By eleven o'clock the whole school seemed to be out in the stands around the Quidditch pitch. Many students had binoculars. The seats might be raised high in the air, but it was still difficult to see what was going on sometimes.

Ron, Cassie and Hermione joined Neville, Seamus, and Dean up in the top row. As a surprise for Harry, they had painted a large banner on one of the sheets Scabbers had ruined. It said Potter for President, and Dean, who was good at drawing, had done a large Gryffindor lion underneath. Then Hermione had performed a tricky little charm so that the paint flashed different colors.

They were all decked out in their Gryffindor hats and scarfs and Cassie and Hermione had painted red and gold stripes on their cheeks.

As the team walked out on pitch, the Gryffindor stands roared and cheered.

Madam Hooch was refereeing. She stood in the middle of the field waiting for the two teams, her broom in her hand. Madam Hooch made the Captains shake hands then she gave a loud blast on her silver whistle.

Fifteen brooms rose up, high, high into the air. They were off.

"And the Quaffle is taken immediately by Angelina Johnson of Gryffindor, what an excellent Chaser that girl is, and rather attractive, too-"

"JORDAN!"

"Sorry, Professor."

Fred and George's friend, Lee Jordan, was doing the commentary for the match, closely watched by Professor McGonagall.

"And she's really belting along up there, a neat pass to Alicia Spinnet, a good find of Oliver Wood's, last year only a reserve, back to Johnson and, no, the Slytherins have taken the Quaffle, Slytherin Captain Marcus Flint gains the Quaffle and off he goes, Flint flying like an eagle up there, he's going to sc- no, stopped by an excellent move by Gryffindor Keeper Wood and the Gryffindors take the Quaffle, that's Chaser Katie Bell of Gryffindor there, nice dive around Flint, off up the field and, OUCH, that must have hurt, hit in the back of the head by a Bludger, Quaffle taken by the Slytherins, that's Adrian Pucey speeding off toward the goal posts, but he's blocked by a second Bludger, sent his way by Fred or George Weasley, can't tell which, nice play by the Gryffindor Beater, anyway, and Johnson back in possession of the Quaffle, a clear field ahead and off she goes, she's really flying, dodges a speeding Bludger, the goal posts are ahead, come on, now, Angelina, Keeper Bletchley dives, misses, GRYFFINDORS SCORE!"

Gryffindor cheers filled the cold air, with howls and moans from the Slytherins.

"Budge up there, move along."

"Hagrid!"

Ron, Cassie and Hermione squeezed together to give Hagrid enough space to join them.

"Bin watchin' from me hut," said Hagrid, patting a large pair of binoculars around his neck, "But it isn't the same as bein' in the crowd. No sign of the Snitch yet, eh?"

"Nope," said Ron. "Harry hasn't had much to do yet."

"Kept outta trouble, though, that's somethin'," said Hagrid, raising his binoculars and peering skyward at the speck that was Harry.

"Slytherin in possession," Lee Jordan was saying, "Chaser Pucey ducks two Bludgers, two Weasleys, and Chaser Bell, and speeds toward the, wait a moment, was that the Snitch?"

A murmur ran through the crowd as Adrian Pucey dropped the Quaffle, too busy looking over his shoulder at the flash of gold that had passed his left ear.

Harry seemed to have seen it. He dived downward after the streak of gold. Slytherin Seeker Terence Higgs had seen it, too. Neck and neck they hurtled toward the Snitch, all the Chasers seemed to have forgotten what they were supposed to be doing as they hung in midair to watch. Harry was faster than Higgs, he reached forwards and then,

WHAM! A roar of rage echoed from the Gryffindors, Marcus Flint had blocked Harry on purpose, and Harry's broom spun off course, Harry holding on for dear life.

"Foul!" screamed the Gryffindors.

Madam Hooch spoke angrily to Flint and then ordered a free shot at the goal posts for Gryffindor. But in all the confusion, of course, the Golden Snitch had disappeared from sight again.

Dean was yelling, "Send him off, ref! Red card!"

"What are you talking about, Dean?" said Ron.

"Red card!" said Dean furiously.

"In football you get shown the red card and you're out of the game." explained Cassie, equally furious.

"But this isn't football," Ron reminded them.

Hagrid, however, was on Cassie and Dean's side.

"They oughta change the rules. Flint coulda knocked Harry outta the air."

Lee Jordan was finding it difficult not to take sides.

"So, after that obvious and disgusting bit of cheating-"

"Jordan!" growled Professor McGonagall.

"I mean, after that open and revolting foul..."

"Jordan, I'm warning you,"

"All right, all right. Flint nearly kills the Gryffindor Seeker, which could happen to anyone, I'm sure, so a penalty to Gryffindor, taken by Spinner, who puts it away, no trouble, and we continue play, Gryffindor still in possession. Slytherin in possession, Flint with the Quaffle, passes Spinnet, passes Bell, hit hard in the face by a Bludger, hope it broke his nose, only joking, Professor, Slytherins score, ah no..."

The Slytherins were cheering.

"Dunno what Harry thinks he's doing," Hagrid mumbled. He stared through his binoculars. "If I didn' know better, I'd say he'd lost control of his broom... but he can't have..."

Cassie looked up, Harry's broom had started to roll over and over, with him only just managing to hold on. Then the whole crowd gasped. Harry's broom had given a wild jerk and Harry swung off it. He was now dangling from it, holding on with only one hand.

"Did something happen to it when Flint blocked him?" Seamus whispered.

"Can't have," Hagrid said, his voice shaking. "Can't nothing interfere with a broomstick except powerful Dark magic, no kid could do that to a Nimbus Two Thousand."

At these words, Hermione seized Hagrid's binoculars, but instead of looking up at Harry, she started looking frantically at the crowd.

"What are you doing?" moaned Ron, grey-faced.

"I knew it," Hermione gasped, "Snape.. look."

Cassie snatched the binoculars. Snape was in the middle of the stands opposite them. He had his eyes fixed on Harry and was muttering nonstop under his breath.

"He's doing something, jinxing the broom," said Hermione.

"What should we do?" asked Cassie, torn between being worried for Harry and angry at Snape.

"Leave it to me." said Hermione

Before either of them could say another word, Hermione had disappeared. Cassie turned the binoculars back on Harry. His broom was vibrating so hard, it looked like it was almost impossible for him to hang on much longer. The whole crowd was on its feet, watching, terrified, as the Weasleys flew up to try and pull Harry safely onto one of their brooms, but it was no good - every time they got near him, the broom would jump higher still. They dropped lower and circled beneath him, obviously hoping to catch him if he fell. Marcus Flint seized the Quaffle and scored five times without anyone noticing.

"Come on, Hermione," Cassie muttered desperately.

Hermione had fought her way across to the stand where Snape stood, and was now racing along the row behind him; she didn't even stop to say sorry as she knocked Professor Quirrell headfirst into the row in front. Reaching Snape, she crouched down, pulled out her wand, and whispered a few, well-chosen words. Bright blue flames shot from her wand onto the hem of Snape's robes.

It took perhaps thirty seconds for Snape to realize that he was on fire. A sudden yelp told her she had done her job. Scooping the fire off him into a little jar in her pocket, she scrambled back along the row, Snape would never know what had happened.

It was enough. Up in the air, Harry was suddenly able to clamber back on to his broom.

"Neville, you can look!" Ron said. Neville had been sobbing into Hagrid's jacket for the last five minutes.

Harry was speeding toward the ground when the crowd saw him clap his hand to his mouth as though he was about to be sick, he hit the field on all fours, coughed, and something gold fell into his hand.

"I've got the Snitch!" he shouted, waving it above his head, and the game ended in complete confusion.

"He didn't catch it, he nearly swallowed it," Flint was still howling twenty minutes later, but it made no difference, Harry hadn't broken any rules and Lee Jordan was still happily shouting the results, Gryffindor had won by one hundred and seventy points to sixty.

Harry heard none of this, though. He was being made a cup of strong tea back in Hagrid's hut, with Ron, Cassie and Hermione.

"It was Snape," Ron was explaining, "Hermione, Cassie and I saw him. He was cursing your broomstick, muttering, he wouldn't take his eyes off you."

"Rubbish," said Hagrid, who hadn't heard a word of what had gone on next to him in the stands. "Why would Snape do somethin' like that?"

Harry, Ron, Cassie and Hermione looked at one another, wondering what to tell him. Harry decided on the truth.

"I found out something about him," he told Hagrid. "He tried to get past that three-headed dog on Halloween. It bit him. We think he was trying to steal whatever it's guarding."

Hagrid dropped the teapot.

"How do you know about Fluffy?" he said.

"Fluffy ?" asked Cassie, incredulously.

"Yeah, he's mine, bought him off a Greek chappie I met in the pub las' year, I lent him to Dumbledore to guard the-"

"Yes?" said Harry eagerly.

"Now, don't ask me anymore," said Hagrid gruffly. "That's top secret, that is."

"But Snape's trying to steal it." protested Ron.

"Rubbish," said Hagrid again. "Snape's a Hogwarts teacher, he'd do nothin' of the sort."

"So why did he just try and kill Harry?" cried Hermione.

The afternoon's events certainly seemed to have changed her mind about Snape.

"I know a jinx when I see one, Hagrid, I've read all about them! You've got to keep eye contact, and Snape wasn't blinking at all, I saw him!"

"I'm tellin' yeh, yer wrong!" said Hagrid hotly. "I don' know why Harry's broom acted like that, but Snape wouldn' try an' kill a student! Now, listen to me, all three of yeh, yer meddlin' in things that don' concern yeh. It's dangerous. You forget that dog, an' you forget what it's guardin', that's between Professor Dumbledore an' Nicolas Flamel-"

"Aha!" said Harry, "so there's someone called Nicolas Flamel involved, is there?"

Hagrid looked furious with himself.