This is based on J K Rowling's book Harry Potter and the prisoner of Azkaban. None of the characters are owned by me, some of the text is copied from J K Rowling's Harry Potter series.

The lights emit from the thousands and thousands of candles floating in the Great Hall, there were so many people that the hall was bursting at the seams. There was Harry who was seated next to Hermione, handing her a cup of pudding. Harry steals a look at Hermione.

"Harry," Hermione said urgently and peered straight into Harry's clear emerald eyes.

"Yeah," said Harry confused, eying Hermione inquisitively.

"I think Professor Lupin is a werewolf." Hermione blurted out quickly and quietly.

"What?"

"Him? It can't be. No! Not him. No, Hermione?" said Harry sounded flabbergasted and threw Hermione a interrogate glare.

"I checked the lunar chart and he was always ill at the full mood and that the Boggart changed into the moon when it saw him," Hermione said silently and dropped her gaze.

"But..but...how can it be… Are you sure Hermione?" Harry asked unbelievably.

"Well, we don't really know, but that's what I think."

"There has to be a person who is helping Sirius Black into the castle," Hermione said more to herself than to Harry. "He might be You-Known-Who's old supporter." her voice shivered a little.

Before Harry could reply, he felt a soft tap on his shoulder and turned around. Lavender Brown was standing next to him smiling broadly.

"Do you know where Ron is?" she asked apprehensively.

"Oh, He's having detention with Professor Filch," Harry replied formally.

"Oh ok, thanks Harry" Lavender said politely and hurried off. Harry turned around to Hermione and saw her face turned pink a bit.

"urr...Hermione, I don't know, but...but he was our friend. It's just…" Harry said, trembling a bit.

"No matter whether you trust me or not, I will go check on him," said Hermione solemnly and give Harry a glare.

"I do believe you Hermione" Harry whispered, "We'll go together"

Seconds later, Harry and Hermione are dashing through the hall. With an abrupt stop, Harry bumped into Hermione. He saw her eyes narrowed and her mouth half-open. Then he saw Crookshanks dashing with a black, huge dog the Grim, the Grim Harry thought. "No" Hermione gave a shriek and ran after Crookshanks. It was night and the sky was gloomy with only a bit of moonlight. The air is freezing and cold. Harry hurried to follow her into the darkness. The wind was blowing hard, he heard the piercing wind right by his ears. Harry ran after Hermione as fast as he could, afraid of losing her, she was so fast that it took all his speed to stay up with her. Harry didn't know where he was going, he blindly followed Hermione after Crookshanks and The Grim. Then Harry heard a scream in pain.

"Hermione!" Harry shouted, trying to follow, but something whipped lethally through the air and he was forced backward. He swiftly turned his head around trying to spot what hit him.

"Lumos!" he whispered cautiously. The wand light showed him the trunk of a thick tree; they had chased Crookshanks and The Grim into the shadow of the Whomping Willow and its branches were creaking as though in a high wind, whipping backward and forward to stop him going nearer. Then he saw Hermione being dragged by the thick branches of the humongous tree.

"Incendio" Harry shouted, pointing his wand straight at the tree. Orange and red flashes from the end of his wand and shot the tree branch that is holding Hermione. The tree branch crushed in the fire. She fell on the ground, Harry hurried to her and supported her up.

"Harry - we've got to go for help -" Hermione gasped; she was bleeding; the Willow had cut her across the shoulder. But before Harry could speak again, before they could even catch their breath, they heard the soft pounding of gigantic paws... Something was bounding toward them, quiet as a shadow - the enormous, pale-eyed, jet-black dog. Harry reached for his wand, but too late - the dog had made an enormous leap and the front paws hit him on the chest; he keeled over backward in a whirl of hair; he felt its hot breath, saw inch-long teeth -But the force of its leap had carried it too far; it rolled off him. Dazed, feeling as though his ribs were broken, Harry tried to stand up; he could hear it growling as it skidded around for a new attack. Hermione was on her feet. As the dog sprang back toward them; the dog's jaws fastened around Hermione's outstretched arm. Harry lunged forward, he seized a handful of the brute's hair, but it was dragging Hermione away as easily as though she were a rag doll.

Then, out of nowhere, something hit Harry so hard across the face he was knocked off his feet again. Harry groped for his wand, blinking blood out of his eyes. "Hermione" Harry shouted as loud as he could, trying to catch his breath and get on his feet. "HARRY GO!" the dog was dragging Hermione to the base of the trunk, backward into a large gap in the roots - Hermione was fighting furiously, but her head and torso were slipping out of sight -

"No Hermione" Harry screamed. Another branch whipped down at them, twigs clenched like knuckles. Harry panted, darting here and there, trying to find a way through the vicious, swishing branches, but he couldn't get an inch nearer to the tree roots without being in range of the tree's blows. Suddenly, Crookshanks darted forward. He slithered between the battering branches like a snake and placed his front paws upon a knot on the trunk. Abruptly, as though the tree had been turned to marble, it stopped moving. Not a leaf twitched or shook.

"Crookshanks!" Harry whispered uncertainly. He covered the distance to the trunk in seconds, but before they had reached the gap in the roots, Crookshanks had slid into it with a flick of his bottlebrush tail. Harry went next; he crawled forward, headfirst, and slid down an earthy slope to the bottom of a very low tunnel. Crookshanks was a little way along, his eyes flashing in the light from Harry's wand. He moved as fast as he could, bent almost double; ahead of them, Crookshanks's tail bobbed in and out of view. On and on went the passage; it felt at least as long as the one to Honeydukes... All Harry could think of was Hermione and what the enormous dog might be doing to her...He was drawing breath in sharp, painful gasps, running at a crouch...

And then the tunnel began to rise; moments later it twisted, and Crookshanks had gone. Ahead Harry could see a patch of dim light through a small opening. He paused, gasping for breath, edging forward. He raised his wands to see what lay beyond. It was a room, a very disordered, dusty room. Paper was peeling from the walls; there were stains all over the floor; every piece of furniture was broken as though somebody had smashed it. The windows were all boarded up. Harry dash forward, he didn't want to waste a second, because that can cause his friend Hermione's life. Harry pulled himself out of the hole, staring around. The room was deserted, but a door to their right stood open, leading to a shadowy hallway. Harry looked around. His eyes fell on a wooden chair near them. Large chunks had been torn out of it; one of the legs had been ripped off entirely. At that moment, there was a creak overhead. Something had moved upstairs. Harry looked up at the ceiling. He rushed upstairs, he was too worried about Hermione and that was much more than his fear. Quietly as he could, he crept out into the hall and up the crumbling staircase. Everything was covered in a thick layer of dust except the floor, where a wide shiny stripe had been made by something being dragged upstairs. He reached the dark landing, more frightened for Hermione than for himself, he only can think about what will happen to her. "Nox," he whispered, and the lights at the end of his wands went out. Only one door was open. As he crept toward it, he heard movement from behind it; a low moan, and then a deep, loud purring. Suddenly, Harry heard a loud scream that sounded scary, his heart leaped out of his chest, sweat pouring down his head madly.

Wand held tightly before him, Harry kicked the door wide open. On a magnificent four-poster bed with dusty hangings lay Crookshanks, dragging a fat rat and purring loudly at the sight of them. Harry looked down and saw Hermione paralyzed on the floor. Harry dashed across to her as fast as he could.

"Hermione," Harry yelled in delight and rushed forward to help her. "Are you okay?"

She didn't reply, she only held Harry's hand tightly.

"Where's the dog?"

"Not a dog," Hermione whispered with fear. "Harry, it's a trap -"

"What -"

"He's the dog...he's an Animagus."

TBC...