Al turned his head casting a quick glance over to where Jason's friends were still sitting. He relaxed when he realized they weren't paying attention to him or Scorpius still intent on their conversation. He had a feeling it was about his baby sister and the horny teenaged jerk she had just left with.

Al nodded at Scorpius and the boys swung their legs over the bench they were sitting on and made their way out of the Great Hall quickly before Jason's friends noticed they had left. They quickened their pace as soon as they got out into the hallway and soon caught sight of Jason following Lily into an abandoned classroom with a smirk on his smarmy face.

"That disgusting, slimy-" Al began muttering under his breath as he watched his cousin's ex entering the room with his baby sister. Scorpius ignored what Potter was saying, eyes locked on where the teenaged boy had entered the room. He didn't think he had ever hated anyone so much before in his life. The blond felt his hands form fists at his sides.

"So Potter," Jason let his eyes roam over the 15 year old girl in front of him. She had sat down on top of a desk, crossing her legs smiling invitingly at the boy in front of her. Her bright red hair trailed over one shoulder and her skirt had slid up when she had lifted herself onto the desk. Jason was so focused on the girl, thinking about what he wanted to do with her; he didn't hear the door open behind him. Suddenly he found himself facedown on the floor, his nose hitting the stone floor very hard, a heavy weight on top of him, his wand grabbed roughly out of his hand. Struggling for a few moments Jason managed to turn over to see a very angry blond sitting on top of him holding both their wands.

"Malfoy," Jason said grinning up at his attacker, his nose covered in blood.

"Wanker," came a deep voice from off to the side, Jason craning his neck to see who had addressed him. Al stepped forward standing next to his sister who was now standing on the floor her hands on her hips glaring down at the boy.

"So Jason, Scorpius and I were wondering," Al was interrupted by his sister clearing her throat, "Scorpius, Lily and I were wondering," he corrected, "what exactly is Madison up to? And what did you do to Rose? She would never willingly sleep with you," Al informed the boy on the ground.

Jason laughed, "Are you sure about that Potter?" At that remark Scorpius' knee dug deeper into Jason's side and tossing the wands to one side his hands slipped up to go around Jason's throat.

"Answer him," Scorpius said, tightening his hands, as Jason began coughing.

"Fine, fine," Jason managed to get out struggling to breathe.

"Scorpius let him talk," Lily said as she moved closer, the blond boy reluctantly loosening his hands but not removing them.

Jason hesitated, Scorpius began to tighten his hands again, "It was Madison's idea! She was upset because Malfoy turned her down. Then Lawler told her that Weasley was planning on seducing him for herself. So Madison thought if she just slipped her the potion we've been working on for our potions assignment we could break the two of them up then she could work on getting into Malfoy's pants," Jason took a deep breath.

Scorpius stared down at him from his position on top of the boy , "You do realize I'm right here right?" Jason looked at the boy on top of him and glared, the blood from his nose dripping down over his lips into his mouth smearing across his teeth.

"What potion?" Lily asked curiously sharing a glance with her brother.

"I can't pronounce the name, but it's meant to make someone really really want sex," Jason admitted, "like if they don't have sex after taking this potion, it becomes painful for them and they could end up injuring themselves trying get relief. It's meant for those wizards and witches who have trouble with not having strong sexual urges."

"So Madison slipped Rose a potion to make her have sex with just about anyone who was there and tricked her into meeting you on the roof, where you took advantage of her knowing she was under the influence of this potion," Scorpius hissed, hands once again tightening around Jason's throat. The boy began choking from lack of oxygen.

"Scorpius," Lily moved forward to try to get the boy off. It would not look good if Jason ended up dead. Especially if Malfoy was the one to kill him. His family had done some horrible things to her family, but she kind of liked Scorpius. He seemed like a decent person.

"You as good as raped her," Scorpius growled before being wrenched off Jason by Albus who had been thinking along the same lines as his sister. They were only trying to get information out of Jason. They weren't here to kill him.

"You slimy BASTARD! You- you- I'm gonna make you regret being born!" Scorpius struggled in Al's arms as Jason got up and ran out of the room leaving his wand still on the floor where Scorpius had thrown it behind him.

"No," Lily said calmly, "this was Madison's fault."

Scorpius broke free of Albus' arms, "But Jason…"

Lily nodded, "I know what we need to do," she said arms crossed in front of her looking at both boys with a determined look on her face.

Rose stirred, feeling hands shaking her awake. She opened her eyes to see Scorpius' concerned face hovering over her. She felt a smile cross her face as she looked into his eyes. He sat back as she sat up, she looked around and realized she had fallen asleep on the floor of the library. Al and Lily were standing behind Scorpius looking at her concerned.

"What's going on?" Rose asked groggily reaching up to wipe the sleep out of her eyes. The two siblings glanced at each other while Scorpius kept his attention on the girl in front of him.

"We need for you to come with us to get your blood tested," Scorpius told Rose softly, hands still holding on to her arms.

"What?" Rose asked looking at all three teenagers.

"Madison gave you a potion to make you really horny which is why you had sex with Jason, because that was a set up. Then she sent Scorpius a note to meet you up there, so he would witness it and get all upset and she could get into his pants," Lily said casually, "so now we need to get your blood tested to see if there's still traces of the potion in your blood and hopefully prove that Madison is evil."

Rose blinked at her baby cousin, "um okay."

Then her head cleared and she stood up suddenly pulling away from Scorpius eyes wide staring at him.

"What is it?" Scorpius asked looking nervous at her sudden and unexpected reaction to him.

Rose looked down at her feet and softly asked, "Is that why you slept with Madison? Did she give you that potion too?"

"Why, I what now?" Scorpius looked at Rose a stunned sort of look on his face, "I never slept with Madison, why would you say that?"

Rose looked up, "she said that-"

Lily burst into laughter, "she said? And you believed her? She's evil remember? A lying manipulative bitch." Rose looked at Lily her cheeks reddening as she realized the younger girl was right.

"Oh. I'm sorry Scorpius," Rose said softly, embarrassed that she had just believed Madison. Scorpius put his arms around her and pulled her into his arms resting his head on top of hers.

"Okay time is of the essence here you two. We need to get Rose tested, the sooner the better, if we want to find any traces of that potion left. Let's go!" Al said turning to lead the way to the hospital wing.

The other three followed him, Scorpius and Rose lagging behind holding hands all the way up.

A.N. So now you know what Madison did, and the extent of her true evil. Let me know what you think.