"Drats!" Hermione muttered to herself as she turned and raced back down the moving staircases.
"Oy! Hermione!" Ron shouted after her. "Where are you going? I thought we were going to get ahead on our homework for once!".
"We are!" Hermione shouted over her shoulder. "I just have to grab my book! Start without me!".
"Yeah right" Ron said to Harry as they made their way up to the Gryffindor common room.
As Hermione neared the potions classroom she heard a noise.
"What on Earth was that?" she whispered to herself. Then she heard it again. It was a moan coming from the room she was headed to. Fearing someone was hurt Hermione ran into the classroom and stopped dead. There, sitting on the potion master's desk, was her head of house, Professor McGonagall. The potion master, Professor Snape, had his head buried in her neck. Quickly, Hermione grabbed her wand and did a non-verbal invisibility charm. She stood motionless, hoping she hadn't been seen. Holding her breath, she started moving slowly toward the door. Just as she was nearing it, the door slammed shut and locked. Hermione gasped and turned around in time to see Professor Snape putting his wand back in his robes. He was looking straight at her. Hermione was about to call off the invisibility charm and explain that she was only there to get her book when he went back to nuzzling McGonagall's neck. Hermione felt like she was going to pass out and then she remembered she had been holding her breath. Taking a few deep breaths, she began to ponder about how she was going to get out of the classroom. Watching two of her professors snogging was the last thing she ever wanted to see; especially Professor Snape. Hermione hadn't, until this point, thought about the odd coupling that was just twenty feet away from the place that she stood. Why would Professor McGonagall want anything to do with Snape, anyway? Hermione thought she hated the guy like everyone else at Hogwarts seemed to. And he's the head of the house that Gryffindor hates most!
Hermione was jolted out of her thoughts by a loud scraping sound. She looked up to see Professor Snape sitting in his desk chair, rolling up Professor McGonagall's dress. As he rolled, he kissed up the insides of her thighs until he reached her sex and kissed her over her knickers. Professor McGonagall tilted her head back and let out a soft moan. Hermione gasped loudly. She had thought she walked in on an innocent snogging session, but clearly this was a different session entirely!
"Who's there?" a deep, husky voice growled.
Professor McGonagall pushed her skirt down and slid off the desk.
"I said, who's there?". Professor Snape walked around his desk, wand in hand, squinting as though he was looking into the sun.
"It was nothing, Severus. We're in the dungeons. Mice run through here all the time. Now are you going to show me that good time you promised me or shall I return to my room?" Professor McGonagall tried to kiss the potions master but he jerked his head away.
"I'm positive I heard a gasp, Minerva. And last I checked, mice don't gasp".
"Oh, Severus. I didn't hear a thing. I think you're being jumpy for nothing".
As McGonagall finished her sentence, Snape waved his wand and a wind rushed through the room, removing the invisibility spell. Professor McGonagall put her hand over her mouth when she saw Hermione standing there.
"That's a big mouse, Minerva. More like a rat, if you ask me". Professor Snape moved toward Hermione. With every step he took forward, she took one back until she was against the dungeon wall.
Professor McGonagall cleared her throat. "Hermione, what on Earth are you doing in here?".
"Clearly" Professor Snape said in a low, dark voice "she's spying. What happened to Potter's cloak, hmm? Or are he and Weasley using it to spy on someone else tonight? At the end of the night you all rush to Dumbledore's office, pour your memories into the pensieve, and have a good laugh?" Professor Snape got louder as he got closer. Hermione, having nowhere to escape to, slid down the wall and hugged her knees.
Hanging her head, she felt tears well up in her eyes from the shame of her intrusion and the embarrassment of being caught. "I'm sorry, professor. I only came back to get my book. I didn't know what was going on in here. I didn't expect anyone to be in here. I'm really sorry".
"Would you be willing to take a truth potion to prove your innocence, Miss Granger?" Snape asked.
"What? Yeah. Yes. Yes I would" Hermione choked out.
Professor Snape pulled out a chair at one of the student tables.
"Sit" he said to Hermione "and drink this". Hermione looked in the mug that sat before her on the table. It was muddy purple in color and seemed to be emitting steam, though she didn't think it was hot. Swallowing her pride, she picked up the mug and drank the potion in two gulps. Trying not to gag, she handed the cup to Professor McGonagall who vanished it with her wand, and took a seat next to Hermione. Professor Snape remained standing in front of the table.
"Now, Miss Granger, what was the reason for your presence in my classroom tonight?"
"I forgot my potions book and had to come back to get it, sir".
"And why didn't you get your book and leave? Why make yourself invisible and stay?"
"I walked in the room and saw what was happening. I made myself invisible so I could leave without being seen. Then the door shut and locked and I was stuck".
"Likely story".
"Severus" Professor McGonagall interjected "she's taken a truth potion. She can't be lying. Go ahead, Hermione."
"There's nothing else to say. I was stuck because the door was locked."
"Tell me." Said Professor Snape. "Did you like what you saw?".
"Sir?"
"Did you like it? Did it turn you on?"
"Severus!" shrieked Professor McGonagall. Professor Snape put up his hand to silence her.
"You can't lie to me, Hermione. You must tell the truth".
Hermione suddenly felt very hot. She hadn't thought about how what she had seen had made her feel; she was too busy being afraid of being caught. Had it turned her on? Had she liked what she saw? She wasn't into women, especially older women like McGonagall, but Professor Snape wasn't bad. She had never seen him as 'the greasy git' that everyone else saw him as. She had always thought he was handsome in his own way. But attractive? Was she attracted to him? She couldn't deny that she had a wet spot in her knickers for a reason.
"Yes" Hermione whispered.
"Yes what?" Snape said with a slyness to his voice.
Hermione drew in a breath and closed her eyes. "Yes I liked it. Yes I was turned on".
Professor McGonagall's eyes widened. Snape smirked.
"Would you like to join us?" he asked.
Hermione felt herself turn a deeper shade of red. "I'm…I'm not really into…I mean…I've never…yes. I would like to join you. Only…not as a threesome. I'm…not into that." Turning to Professor McGonagall she added "I like you, Professor, just not like that."
Now it was Professor McGonagall's turn to blush. "I agree, Hermione. Though Severus, I'm not so sure this is a good idea. If Dumbledore finds out..."
"Whether Dumbledore finds out or not is irrelevant as Miss Granger and I are both of age and she is only here to finish the NEWTs she missed her seventh year. And he won't find out because there are only three of us who know what's going to happen and I am not going to be the one to tell" Snape said, narrowing his eyes at Professor McGonagall as she stood.
"Have it your way, Severus. Just…don't get caught. And Hermione" she said, turning to the blushing girl "have a safe word ready, my dear…you never know". And with that, she walked out of the room, closing and locking the door behind her.