Mistaken Identity

Diana Maceachran

***

A/N: Warning! This starts out with some serious lemons. So it is clear, this is all consensual sex. But because of the explicit descriptions, coupled with the situation that brings about this tryst; I wanted to warn you. Huge thanks to my beta, MadBrilliant, who not only helped to beta read but also gave her insights on the content of the chapter. Enjoy!

***

And I would be the one

"Possession" by Sarah McLachlan

***

Diana walked in the dark. It was after curfew. Morgana had told her not to use her wand for light for she might get caught. She chided herself for being so stupid as to do this fool's errand! Why should she care to impress Morgana? Just because she was the Slytherin Queen, just because she had the entire male population of Hogwarts wrapped around her finger, just because she, Diana, a seventh year, had mercilessly wandered in her footsteps the past year, hoping for a crumb that she might give her?

She had been told abruptly at dinner by Morgana that she would be busy this evening. So busy, in fact, that she would not be able to retrieve the work she had left in the Potions lab with Professor Snape earlier. She was the professor's apprentice, having graduated the year before and whined she was too scared to return to the classroom and risk getting caught by him!

"Besides," she had pleaded, "you're so much better at unwarding charms than I am!" She had begged so sweetly and had promised to include her on her next Hogsmeade outing, where she would get to hang out with her and some Slytherin seventh years if she would just do this "one tiny thing"...perhaps they might fancy her? That was the trick for Diana.

Morgana knew Diana had started looking at boys, and she could see the desire in Diana's eyes. So, she finally notices boys and is eager to play! Look at her eyes...she's positively gagging for it! Maybe she's already been playing, and I've just not noticed, Morgana had thought.

Diana was excited at the prospect of flirting with some of the handsome Slytherins. Everyone in Slytherin thought Diana and Morgana were sisters because they looked so much alike. However, where Morgana was exquisite in her beauty, Diana was just Diana. She paled in comparison. Morgana's skin glowed while Diana's merely shone. Morgana had rich, chocolate brown hair that was thick and lovely. Diana's chocolate brown was just flat. Morgana had gorgeous brown eyes that were inviting and sultry. Diana's brown eyes were just...brown. Diana had never cared for popularity before, but when she'd started her seventh year she'd wished she could have been more like Morgana and have the attention she received from the other Slytherin boys. So with great fear, she had gone to the dungeons to gather Morgana's belongings.

She felt along the corridors, and her breathing was so loud, she feared discovery. She felt her heart race in anticipation. The last thing she needed was to get caught! She had spent three successful years after Professor Snape's release from Azkaban avoiding any confrontation or problem with him and was halfway through her final year...she doubted he even knew her name! It was a remarkable feat for her being a Slytherin herself! She wanted it to stay that way. The man intimidated the living hell out of her!

She continued to feel her way to the classroom, skimming along the borders of portraits lightly, so she would not wake them. She easily broke through Professor Snape's wards. She just going to open the door slowly when a hand grabbed her waist and another hand wrapped itself against her mouth.

She felt warm breath against her neck, and a familiar voice whispered in her ear. "I see you chose to wear your old Slytherin uniform tonight for our first time? Although, I do know it's not your first time! You've irritated me enough, witch. Fine. You win. I'll give you what you so desperately want from me. However, only on my terms. Am I clear? Nod your head if you comply with my terms. You will NOT speak."

Diana nodded, terrified at what was happening to her.

"Place your hands on the door. Come now, girl, palms down," he snapped in irritation.

Diana obeyed.

Her robe and skirt were pushed up. Warm hands with calluses on their fingertips were reaching inside her knickers, playing deftly with the sensitive flesh between her thighs. She opened her mouth in pleasure, and her eyes rolled in the back of her head. Her skin was burning alive! Then, her hands were forced down, and her robe, skirt and knickers were stripped off her. On the outside, Diana was numb with fear, but inside, she was tingling with desire all at the same time! She knew who was doing this to her. She knew this voice...

Her hands were placed back up against the door. He was pressed firmly against her back. She sank back against his hard chest and torso, intoxicated by the combination of terror and desire coursing through her body. His fingers reached around her chest and were slowly undoing the buttons on her blouse. She felt the heat from his body on her back and his breath on her hair. He moaned as he cupped her breasts and as he ground his hard bulge against her bare bum. Diana's breath became ragged as he breathed into her ear.

"Desperate now, are we? Who is the tease now?" he whispered deeply.

Diana was too terrified to speak. She knew she had never teased Professor Snape! She made it one of her goals to avoid him at all costs! He slid his hands underneath the back of her shirt, and she shivered as his fingers grazed her waist on his way upwards. He slowly unhooked each clasp of her bra and released her breasts from the constriction of white lace and under wire. He lowered her arms and slipped her blouse and bra off of her. She was now naked. She moaned in pleasure as he massaged and pinched her nipples. She pushed back into the hard chest of the Potions master and arched back against his rough frock coat, his buttons digging into her shoulders and head. She'd never had anyone touch her so intimately before. It was so wonderful; she wanted to sink down to her knees in submission to his touch.

He spoke to her again in languid tones. "My, my, I never guessed your breasts were so full. What a delightful surprise. But I also have a surprise for you, my little apprentice!"

Apprentice? What? Diana thought hurriedly as she felt his thigh separating her legs.

"Wait!" she said.

"SHHH! DO. NOT. TALK!" he barked.

He grabbed her wrists and placed her palms back on the door. She was trapped. He thought she was Morgana. Oh GOD! She felt his thigh pushing between her thighs, urging them to part. Then heard the clanging of his belt buckle opening. Her eyes closed in excitement and anticipation at the thought of what he was about to do to her. She realized she didn't care...she wanted it. She then felt his naked cock rubbing against her outer thigh. She could feel her natural juices slide down her inner thighs. She was ready...damn the consequences!

He paused and gently raked his hand through her hair with one hand while stroking the width of her hip with the other. He pulled her hair over to one side and began to kiss and nibble on her neck. He lowered his hand from her hair to her right breast and massaged it. He lowered his other hand slowly down her stomach, dipped his finger into her damp, curly folds, and found the spot he knew would make her react. Her nails clawed against the door, and she trembled and shook against the wizard. He chuckled at her reaction.

"This is your last chance," he whispered sultry. "You can walk away now. No questions, and no fear of retribution." He removed his hands from her and stepped back. She wanted his warmth back. She wanted him to touch her again. She did not make a move to leave.

He attacked her, pushing his whole body against her, pressing her against the door so hard, she thought he would crush her. He lifted her from the floor by her waist and thighs, impaling himself into her virgin flesh. Diana screamed and cried out. He wrapped his arm tighter around her waist and gripped her left breast with the other. He started thrusting earnestly inside her.

"Don't speak unless you want to scream my name in ecstasy. You did promise that you would," he grunted into her ear. He tightened his vice grip on her waist, relentlessly continuing to hold her up and pound himself inside her. It was unbelievable! This powerful, thrusting, determined wizard was taking her against a door! After a while, the pain was ebbing away. Her palms were so sweaty on the door, she was slipping. The professor was panting in her ear, his hot breath on her neck. It was so erotic!

"My God, you are so tight and wet! I had never dreamt you could be so wet!"

Diana knew the wetness was her blood mixed in with her own natural wetness. But in the dark, who could tell? He suddenly withdrew, sat her feet back on the ground, and pulled her into the dark classroom. It was so dark; one could not see one's hand in front of one's face. But the professor knew what he was doing. He pushed her roughly onto one of the many lab tables. He dragged her legs to the edge and ripped off the socks and shoes from her feet, urging her to wrap them around his waist. He buried his tongue into Diana's mouth. She had never been kissed, but she was overcome with desire. Something was turning. He was touching her again between her legs, but it was different. He was caressing her. Diana knew what he was doing. She had done this many times to herself alone in her bed at night. But it never felt as good as it did now with the professor touching her. This was what she had been wanting for so long! She was moaning and panting. He devoured her breasts, one and then the other. She was shrieking and crying out. She could not control her voice as she finally screamed out her orgasm.

He buried his cock inside her again and thrust over and over in earnest as he ran his hands up and down the length of her thighs.

"God, I never thought you'd feel this good. You are so soft. So sweet!" he breathed.

The professor murmured more delights as he continued to pummel into her body. He grasped onto her breasts, pinching and twisting her nipples as he pounded into her. She felt her body take over, for she couldn't control herself. She raised herself up on her elbows to meet his lips and encourage his ministrations on her nipples more passionately. He hungrily kissed her back.

Diana could no longer think coherently. She just wanted more and more of this man who had terrified her for so long. Finally, she clutched his robe around his waist, hiked up her knees to his shoulders and began to return his thrusting. She loved this feeling, this shifting and pounding. She loved his moans and whispers of how good she was making him feel as he stroked her face, making his way back down to her breasts, to her back in order to support her against him as she continued to grind and thrust against him as hard as he was thrusting into her. Finally, Diana felt a build up so intense, she screamed at the top of her lungs and hung onto her Potions teacher for dear life as she twisted and writhed underneath him.

"Oh Professor, Professor! Oh God!"

As she came down from her climax, she heard him. He was grunting and moaning, but she heard a groggy "What?" escape from his lips.

He was too far-gone, but something was not right. Oh God, what have I done? he thought. He couldn't stop. Whoever this girl was, it was too much for him to stop now. She felt too good...he was so close. He shouted and came inside her. He was panting and gasping for air. Who is she? he thought.

Diana was terrified. Without thinking, she forcefully pushed the professor away from her with her foot, grabbed her clothes, and ran away. She didn't look back. As soon as she got to somewhere safe, she redressed herself and then went back to the Slytherin common room.

She went into her private room, thanking God she had on, and went into the bathroom. She was streaked in faint bloodstains from where he had touched her and then rubbed his hands on her face and chest. She jumped into the shower and washed herself off. She winced as the water struck between her legs. Her privates were so tender.

When she got out, she went on her knees with a mirror and looked at her vagina. She was still bleeding lightly. She gingerly felt around for any tears. No, she was fine, just not used to being stretched and pounded like that! It was a good thing she had wanted him; he could have done a lot of damage to her. She put on new underwear, a pad, her bulky nightgown and settled in to her bed. Her body felt alive and tingled all over. She couldn't stop thinking how good Professor Snape had made her feel. It was as if a light had been switched on inside her. She knew even then, a mere 40 minutes after he had been inside her that she would want him again and again. What was she going to do?

***

Severus Snape was leaning against the wall in his Potions classroom in shock from the force she had used to push him away. Something was terribly wrong. That woman was NOT Morgana. Who was she? How could he have been so mistaken?

He walked into his private room, lit his lamps, and poured himself a tumbler of firewhisky. He saw his reflection in the mirror over the fireplace as he brought his hand to his face to drink. Blood. He dropped the glass and ran to the bathroom. His hands and his crotch were bloody. He undid his pants and took out his penis. It was streaked with scarlet.

"OH SHITE!" he roared. What have I done?

He stripped off his clothes and jumped into the shower, scrubbing furiously. With everything else he had on his mind, now he had to figure out which girl he had deflowered tonight!

***

The next morning came with a blinding headache. Subsequently, Snape's fuse was shorter than it had ever been before. Woe to any dunderhead that crossed his path today! He was so furious he couldn't wait to get his hands around Morgana's neck.

He watched her at Slytherin's table, flirting and teasing the seventh years. He noticed her robes were open, showing her form-fitting blouse. With a discerning eye and remembering the breasts he had cupped and massaged the night before, he could conclude Morgana's breasts definitely were not the ones he had tasted last night. His mystery lover's breasts were fuller and larger. He scanned the table for any dark-haired girls that could pass for Morgana. His eyes were killing him, burning from his hangover and self-loathing, and he could not focus. Well, he'd get to the bottom of this when he met with Morgana later.

It was a tortuous day, having the bitch around him and not being able to question her. He tried to focus and figure out which girl it had been. It must have been a Slytherin girl. No other girl would do such a favor as breaking curfew for Morgana except a Slytherin. Then a terrible thought crossed his mind...What if she were a third year? What if she were a first year? OH GOD!

He got control of himself and shook the paranoia out of his head. Of course, she was too well endowed and rounded out to be so young. He prayed to any and every deity he knew of that at least she was a sixth year. He excused himself from his fourth- year Potions class and splashed cold water on his face, willing himself not to vomit. He looked at his reflection in the mirror and recalled the discussion he had with Morgana just last evening.

"So, if I come here, will you be up and waiting for me, Severus?" she said seductively.

"Just tell me what you want," she breathed into his ear. "I'll be your slave. And I'll only speak to scream your name in ecstasy."

They had laid out the plan; she showed him her phial of Contraception Potion. It did not matter to Snape; he still would make her take his Contraception Potion just in case. But now! FUCK! Running around...maybe limping around...this school was some confused deflowered virgin who could be creating life within her and not even know it. He hoped whoever she was, she'd have the good sense to go get checked out. Maybe that's what he should do: go talk with Poppy and see if any girls had come round today for a Contraceptive Potion.

After class, Morgana smirked at him and left with the other fourth years. She knew he was livid. But did she know someone else had taken her place? He shook his head. I can't think of all that now. I'll deal with her later. Go see Poppy!

***

"Severus Snape!" stormed Poppy. "I don't think it is any concern of yours if some unfortunate girl has come to me for that kind of personal request."

Snape rubbed his bloodshot eyes. "Poppy, if she is a Slytherin girl, I most certainly have the right to know!" he growled. He calmed down his tone and spoke softly to the matron. "Poppy, I've heard a terrible rumor that a Slytherin girl maybe in trouble. I need to know if any girls from my house have come to see you. I don't need names, just a yes or a no."

"Well," Poppy relented. "I don't know what to tell you, I haven't had a girl come to me in months! Girls must be getting smarter about things or taking care of it outside of the school."

"What about your stores? Any break-ins? Have any girls been loitering around? Maybe potions are missing?" he mused.

"Severus, this infirmary has been devoid of all females for the past three days! And no one has been messing about in my stores. I would know! And you know me well enough to realize that I am meticulous about my stores!"

Well, she's right about that! Snape thought grudgingly. "Well, thank you, Poppy. Please let me know if any Slytherin girls do come to you. Can you promise me that?"

"Certainly, Severus. I know how protective your house is about its secrets. Don't worry." She patted his shoulder. Poppy was so good to him... like a mum really. She'd treated every wound he'd ever received since he' come to Hogwarts at eleven. That was a lot of caring with the hexes, thrashings, and tortures he took from Potter and his lot, and then all the tortures he received from the Dark Lord over the years. Finally, there had been the last battle...his near-death experience. She had helped to save him.

Well, he was no closer to finding out who his mystery lover was. God, I hope she thinks of the encounter as a tryst and not rape, but the way she bolted from me...that wasn't a good sign. But the way she responded to my touch? She obeyed my every request, even moved her body to meet mine. Then she was screaming in pleasure and then...UGH! She didn't say "Severus"; she had said 'Professor.' Bloody fuck!

***

Finally, he and Morgana were alone. She sauntered in his office and said, "Hello, Lover!"

He sat in his chair, expressionless. "Am I your lover?"

"Of course! Don't tell me you didn't enjoy last night. I bet you never thought I could be so wild!"

"Oh, that's not how I remember it," he said icily.

She went pale. "H-how do you remember it?" she asked shakily.

"Come here, Morgana," he said softly, holding his arms out for her. She came forward and sat on his lap. His arms wrapped around her tightly as he tilted her head so he could whisper in her ear, "Why did you tell me you weren't a virgin?"

"What?" she asked unconvincingly as she attempted to wriggle out of his arms.

"Who was she, Morgana?" he asked in a low and dangerous snarl.

She laughed as she pushed herself from him forcefully. "You mean to tell me you fucked another girl and didn't know it wasn't me?" She burst out laughing anew...harder than ever.

Snape jumped up and cornered the witch. "It would be wise for you tell me what game you are playing at," he whispered threateningly.

Morgana assessed the situation. He was angry, very angry, but she knew he had to restrain himself. After all, she was Mulciber's daughter. "Look," she said darkly. "After your little stunt when I was trying to talk to my friend, Robbins, before you so rudely yanked me away and then told me 'I belonged to you,' I knew I would never let you have me. You are a sick and twisted fuck, Severus Snape! I had bruises on my arm for a week from where you practically ripped it off! So I made arrangements. No harm, no foul. You got fucked, and I didn't. Everyone's happy."

"Really?" he retorted. "Not an escapade to entrap a teacher? Was this all just a laugh for you? Wanted to fool the 'Greasy Git' of the dungeons? And what of your 'replacement'? Are the both you laughing behind my back?" he roared.

"Well, well, Snape. My father was right about you. You'll have to watch that raging paranoia of yours. Sorry to disappoint. I cannot reveal my helpers. Let's just say she was very eager to meet some Slytherin boys when I procured her services. So I figured she might as well get the Head Slytherin at that!" she smirked. Her eyes grew wide. "Wait! She was a virgin?" She fell apart laughing. "Well, it's a good thing she didn't know she was on her way to get fucked then!" She walked out into the lab to begin her work. She cracked up laughing again. "You are in so much trouble!"

Snape was beyond himself. This seemingly, charming, young witch had arranged for an unsuspecting virgin to fall right into his clutches! He deserved to be a fool. After all, her father was one of the most vicious Death Eaters he had known; indeed, Mulciber was one of the few who had trained him! He would have to tread cautiously. The bastard may be dead, but there were enough ex-Death Eaters around who would avenge Mulciber's daughter. The apple doesn't fall from the tree; and Snape had followed his prick to his destruction. But now, there was an innocent girl, probably losing her mind at what he had done to her! He lost it. He attacked Morgana and blasted her across the room. She whipped out her wand, blood trickling from her head.

"Watch it, Snape!" she hissed viciously. "All I have to do is say the word and your sorry arse goes back to Azkaban. So just take your beating like a good little boy." She wiped the blood from her forehead. "Maybe next time you'll treat your women with more respect!"

"Get out," Snape said with all the venom he could muster. If she were not Mulciber's daughter, I would kill her!

"But, my work..." she said.

"GET OUT!" he yelled.

"Fine!" she spat at him. She gathered up her things and left, flouncing out the door.

He stood there for a long time. What was he going to do? He had survived to help defeat the Dark Lord and now look at him! Played and blackmailed like an idiot by a little chit! He was losing his touch.

***

A/N: I LOVE the movie "Godsford Park" and Kelly McDonald, who is pictured here at the top and played Mary Maceachran in the movie. That is where I got the last name for my OC (by the way, she played as Maggie Smith's lady's maid, who plays McGonagall in the Potter movies). I wanted to make sure I gave credit where it's due. If you haven't seen Godsford Park, go see it! It has Clive Owen(who is HOT!), Ryan Phillipe, Michael Gambon (Dumbledore), Helen Mirren, Kristen Scott Thomas, and Jeremy Norton. And also the actress who plays Lily Potter in the movies, but I can't think of her name. Thanks for reading my rambles. PLEASE REVIEW! I love to hear feedback/criticism/praise...I can take it!