Hey guys, this idea has been in my head for a while. I hope you like it :)

SILVER AND BLACK
Prologue

He ran fast through the overgrown grass, feeling the wind whip his face. Closing his eyes, he inhaled deeply, taking in the various smells around him. Animals, nature, water.

He jerked his head towards the village of Hogsmeade and began walking downhill at a quick pace. The full moon hung above him in the night sky, glaring down at the world. When he reached the very edge of the village, he ran his hand through his hair to mess it up a little.

He stepped inside a small pub, called The Hog's Head. It was very quiet – just a few customers dotted around chatting amongst themselves. The drunk ones were chatting to themselves.

A young girl, probably no older than twenty, was sitting in the corner alone, reading the Daily Prophet and taking a sip from her cup. Sirius smiled and headed over to her. He stopped right in front of her table and snatched the newspaper away from her.

She looked up at him in anger. It seemed that she was about to yell at him, before her eyes glazed over as though she was in some sort of trance, and she stood up immediately, keeping her eyes on his. He took her hand and led her out of the door silently.

They walked back uphill, with neither of them uttering a single word to one another. He led her into a small cluster of trees. It was pitch black, so they couldn't be seen even if someone was standing just outside the trees they were in. Sirius stopped and sighed. He looked into her eyes, and then up to the sky, before looking back at her.

"I'm truly sorry," he whispered, before grabbing her tightly by the shoulders and lunging forwards to sink his teeth deep into her neck.

All that could be heard for miles was an ear-splitting scream.

##

Feeling fully satisfied by his meal, Sirius stepped out of the trees, wiping his mouth, and started walking back up towards the castle. He was in no rush, so he walked slowly, enjoying the feel of the cool wind blowing against his pale skin.

He passed an old shabby building. A gust of wind blew over him, and he picked up a familiar scent.

It was a smell he'd been specifically trained to recognise. It was a smell that he knew belonged to something horrible. A monster.

The smell of a werewolf.

He took a deep breath and then turned around to look at the Shrieking Shack. So this is why everybody assumed it was haunted. There could possibly be a werewolf in there.

Sirius could easily get inside. It would only take a second, and then he could check if it really was a werewolf.

Without any further hesitation, he headed towards the door to the broken house and pressed his ear against the wood. He could hear noises coming from inside and he was now positive that it could only be a werewolf inside.

Turning slightly, he rammed hard into the side of the house, creating a large hole in the wall. The house was dimly lit inside, with flickering lights, and the smell of werewolf was overwhelming. It was clear that this werewolf spent a lot of time in the shack.

He glanced around to see if he could find the beast, but it was nowhere to be seen. Cautiously, he peered through a door on the left of him, and it was there – standing in the corner.

Gleaming yellow eyes stared out at him, taunting him. It was huge. Maybe even double the size of him, and it had a dark brown fur covering it. The creature's teeth were bared, ready to attack.

Sirius closed the door quickly and turned to leave. Opposite him was another door, and he chose to go through it. It led to a long passageway, which he ran through. When he finally reached the end of the passage, he leapt out of a hole immediately above him, narrowly avoiding being hit by a thick branch of a tree...

The Whomping Willow.

Sirius stared up in awe. So that was why the Whomping Willow stood there – to protect students from that monster. He always wondered why such a dangerous tree stood on the grounds of a school. His eyes widened.

There was a werewolf living in Hogsmeade. The werewolf had a passage leading to Hogwarts.

People weren't safe.

As he headed back up to the castle, he knew what he was going to do. Next full moon he was going back to the Shrieking Shack, but this time he would be prepared. This time he'd have a silver axe with him, and this time he wouldn't hesitate.

He would kill it.

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