Disclaimer: I own nothing, except Alexandra and Ivy and the plot.

Chapter IV: The Perfect Plan

They were in trouble. If he saw them, Griffindor would lose at least 100 points. So they stayed very quiet behind the statue. Suddenly, Professor Crystal emerged from another part of the corridor. There was a glimpse in his eyes when he saw her.

"Ah, well," he said in an ironic voice, "our new DADA teacher. How was your first day?"

"Fine, thank you," she replied in the same tone. She was looking highly unconcerned, but something told Harry: Snape better not anger her, or there will be consequences.

"I was afraid you wouldn't... fit in, if you know what I mean."

"Don't worry, professor."

"Did you favor the Griffindors? Because you more than anyone have the reason to do it."

"No, unlike some teachers I am not letting my personal life interfere with my profession."

"Are you accusing me of being unfair?" Snape asked in a silky voice.

"Well, let me think... why yes, I am. Everyone knows you never ever deduct points from Sliverin and that you cease any opportunity you have to deduct points from Griffindor. So if anyone can speak of being fair, it is not you."

The next thing he did was grabbing her hand, drawing it behind her back and whispering into her ear:

"Don't anger me, or you will be sorry."

Ivy hit him between his legs with her knee. He released her because of the pain. The next moment she had her wand out and pointed it at Snape:

"Don't you ever dare threaten me again, or you will be sorry," she said in a dangerous voice. "Very sorry."

With these words, she spun around and disappeared behind the corner.

"I'll get you, Crystal," said Snape in a low, silky voice, which Harry knew was more dangerous than threats. Professor Ivy Crystal really made him angry. Snape went away, in the opposite direction from where Ivy went.

"Harry," said Alexandra, "lets get out of here before any teacher finds us."

They went to the Common Room. When they got there, the Common Room was empty. They sat on the sofa and watched the fire. Finally, Alexandra broke the silence:

"Harry, don't you think we should warn professor Crystal?"

"No, don't think so, she can defend herself."

"But Snape is really dangerous."

"Yep, I know, but you saw her tonight. She is not the one to be threatened. Well, darling, if I managed to calm your nerves down, I think the two of us might try and do some more... personal things" he said in a loving-ironical voice.

"Sure,... darling, what are you up to?"

"I thought about meeting tomorrow by the lake...honey."

"Sure... sweetheart..."

"After classes then,... love?"

"Sure,... pumpkin."

"Call me that again, and you will be sorry!"

"What would you do to me,... dear?" she teased him.

"This." He grabbed her by her collar, pulled her closer and kissed her. She was too shocked to push him away. When their lips finally parted, she was shivering. She was scared.

"Harry... I..." then she took a deep breath , calmed down and smiled, "I must get used to it, mustn't I?"

"Yeah,... sweet-cheeks."

"Don't call me that!" she shouted amused and threw a pillow at him. He caught it due to his excellent quidditch reflexes. The next second he was standing on his feet near her. He lifted her in his arms.

"Put me down this instance!" she yelled amused.

"Oh no you don't," he teased her. "I am caring you to your bed to get some sleep, because you are insufferable when you are awake," he said, laughing.

She was laughing too. She aloud him to carry her to her bed. Everyone else was asleep, so they wouldn't know Harry broke the rules. He put her on her bed, kissed her forehead and then went to sleep.

In his rooms, Snape was furious. How dare she insult him! Crystal was going to get it! She has no right whatsoever to be here! She has no right to have this job! She was going to get it! War she wants, war she gets! He was going to make her pay!

But what to do? Curse her? No way. It was too... rude, heavy. He wanted... refined vengeance. Something that would make her pay. Suddenly an idea stroke him...

"Yes, that would be perfect... She won't know what hit her," he whispered with a malefic smile.

He was going to make her fall in love with him.

The next morning Ivy woke up earlier that usually. She stretched in her bad and stood up. With a wave of her wand the bed was made. She had a shower, washed her face and teeth. She then got changed in her black, comfortable robes. Ivy would have preferred to wear jeans, but the school rules... Anyway, she was pleased with the way she looked. She then combed her hair. It was shining, as usually. Suddenly, she heard a knock on the door. She opened it and immediately withdrew her wand. Severus Snape was standing in front of her.

"Hello, Crystal, no need to be so defensive. I came to apologize."

"You what!" she gasped.

"I apologize for provoking you last night. I... I had other problems. So would you please forgive me?"

"Uh... yeah, sure professor."

"Call me Severus, Ivy."

"Sure... Severus."

"So, might I escort you to the Great Hall?"

"My pleasure," she smiled, giving him her hand.

She closed the door and both went to the Great Hall.

When Harry saw Professor Crystal and Snape entering together, he didn't like it. He commented it to Alex:

"Why are they together? You heard what he said last night. I don't like this."

"Me neither. But what can we do?"

"We might warn Professor Crystal."

"Today after classes?"

"Today."

Their first two lessons were Transfiguration with McGonagal. They were transfiguring stones in animals. It was rather fun. Harry had a nice puppy and Alex... Alex transfigured her stone into a big black panther. All the class was scared to death. So Alexandra had to transfigure it back. Sad.

After lunch they had double DADA. Harry and Alexandra were the first to arrive in class. Professor Crystal was sitting at her table.

"Professor," said Alexandra, "we want to warn you. We... we accidentally witnessed the scene between you and Professor Snape yesterday." There was a playful spark in Ivy's eyes. "When you left," Alex continued, "we heard Professor Snape say that he was going to make you pay."

"Professor Snape apologized to me today," replied Ivy.

"You don't get it," said Harry nervous, "I know Snape..."

"Professor Snape, Harry," Ivy interrupted.

"Well, yeah, him. I heard with what tone he said it. He is not the one to threat in vain, especially in that tone," Harry said nervous.

"You wanna say that all he is doing is some vengeance plan?" Ivy asked.

"Well...yeah. We wanna tell you to be careful."

"Thank you very much, Harry and Alexandra. I will do my best not to allow Snape to carry on with whatever plan he has. No, I think your class gathered outside. Tell them to come in. We have a class to start," she smiled at them.

The lesson went as usual. They practiced the Patronus Charm again. Normal lesson.

After the classes Ivy was in her personal room, trying to figure out Snape's plan. The only thing that came to her mind was that he was trying to make her fall in love with him. So, the only thing she could do was play along. He would give up his vengeance. He won't be trying to conquer a woman. He will be fighting for the love of a crazy child. He was going to find out how she was before Eric died. He will be sorry for ever having that plan, because he was not the type who could be crazy and wouldn't feel embarrassed about it. Poor Severus Snape. He was not the one who could handle fire. He was not the one who could handle her.

It was about six o'clock when the lessons were over. Harry and Alexandra went together to walk around the lake. It was getting dark already. They sat under a tree near the water. Alexandra was in Harry's arms. She was so cozy. She wanted this moment never to end. Finally, she broke the silence:

"Harry, have you noticed that we haven't done any pranks this year?"

"Do you want us to?"

"Nah, I was just wandering why are you so calm this year, if you know what I mean."

"Well, I've matured. And I don't want trouble anymore."

"Sounds like a fair explanation to me, but..." She suddenly broke off.

"Wha..." She put a finger on his lips, and listened. Then whispered: "There are three people coming this way. Take your wand."

She stood up and had her own wand out. When the three pupils approached them, they heard a familiar voice:

"Ah, well, the pair of the year... tell me, Potter, is she clumsy in bed? Because I don't think being blind is a big advantage when you make love..."

"Malfoy, you... you are going to get it!" Harry yelled.

"Oh, really?" he sneered. But before he could say another word, Alexandra shouted some kind of spell. Malfoy was turned into a ferret and was now glaring scared at Alexandra. Harry looked at her too. There was some kind of glow in her eyes; her cheeks were red of fury. There seemed to be sparkles of electricity in her hair. She looked like a goddess. Even the stick she was holding in her hand didn't ruin the image. She was beautiful.

"Now get out of here," she shouted at Crabbe and Goyle, "and take this ferret with you. And be warned, Malfoy, dare once more insult me, and you will remain a ferret for the rest of your life."

Crabbe, Goyle and Malfoy were running now away to the castle. Harry was sure they would go to Snape.

"Alex, you are in trouble. They will go to Snape."

"So? Do you think I am scared of him? He is no better wizard than me, I assure you."

"He could poison you," Harry smiled.

Alex smiled back at him: "I would like to see him try."

They both burst out laughing.

Snape was sitting in hi classroom, when Crabbe and Goyle came with a ferret. They said that Alexandra Blamez has transfigured Draco into it. Snape muttered a counter curse and Draco was back to his normal self.

"Now go along, Draco, I will sort things out with miss Blamez." Draco smirked and left the dungeons satisfied, while Snape left to look for Alexandra.

He found her and Harry in the Great Hall, eating dinner. When they stood up and left for their Common Room, Snape followed them. When they were in the corridor, Snape called:

"Miss Blamez, please come here."

They both approached Snape.

"I think, Potter," Snape said in a silky voice, "I called only miss Blamez. Go to your Common Room."

"But..."

"Don't worry, Potter. Our very talented miss Blamez will find her way to the Common Room. Now go." Harry threw a last look at Alexandra, but she, obviously, didn't notice it. Then he left. When he was away, Snape said:

"Why did you turn mister Malfoy into a ferret?"

Alexandra was astonished. She didn't expect this. She expected he would deduct house points. But instead... Instead he was asking why she did it? Strange. Maybe... oh well, no matter. She would have to ask... (A/N: I'm not telling you what is the matter. Not just yet.):

"Mister Malfoy insulted me."

"What do you mean by 'insult'?"

"I mean he said something inappropriate."

"We will see if you haven't lied to me. Legimilanis!"

He couldn't see anything. Then he heard her voice:

"Harry, have you noticed that we haven't done any pranks this year?"

"Do you want us to?"

"Nah, I was just wandering why are you so calm this year, if you know what I mean."

"Well, I've matured. And I don't want trouble anymore."

"Sounds like a fair explanation to me, but..." She suddenly broke off.

"Wha..." She put a finger on his lips, and listened. Then whispered: "There are three people coming this way. Take your wand."

She stood up and had her own wand out. When the three pupils approached them, Alexandra heard a familiar voice:

"Ah, well, the pair of the year... tell me, Potter, is she clumsy in bed? Because I don't think being blind is a big advantage when you make love..."

"Malfoy, you... you are going to get it!" Harry yelled.

"Oh, really?" he sneered.

"Enough!" Snape said. Alexandra was once again in the corridor. There were tears in her eyes. Snape saw that. For the first time, he felt sorry for her. But no... he mustn't.

"Well, miss Blamez, I can justify your behavior as a human, but as a teacher I have to punish you. Lets see... an extra potion essay on the topic: "Polijuice Potion: It's Effects and Use". That will be all. You may go. I think I won't be wrong if I say that Potter is waiting for you just behind the corner. Good evening, miss Blamez."

Harry came out from behind the corner and walked to Alexandra. Snape has already disappeared behind the corner when Harry reached Alex. He took her hand in his.

"Harry, take me to professor Crystal, please."

"Why?"

"Just take me there, please."

When they reached the classroom, they knocked on the door. "Come in!" they heard Ivy's voice. They entered the room.

"What can I help you with?" she asked politely.

"Ivy, the game is over," Alex said, calling her teacher, to Harry's astonishment, by the first name. "We must tell Harry the truth."

"What truth?" Harry asked perplexed.

"My real name, Harry, is Ivy Blamez," he heard his teacher say. "We are sisters."