YAY! Double digits! This is the end of arch 2 and I think I had this chapter written even before chapter one was...but of course I have edited it so that it fits in better now. Um...lets see, like I do when I'm done with each arch, I take a few week break from my stories to recuperate and whatnot and get back into the writing zone. But t be quite frank, I don't think my break from this fic is going to be long at all. I love writing for Callista so much! This chapter is a little different from the book because instead of Halloween being on a Saturday, it's on a Friday and instead of them going to Hogsmeade before the feast, they're gonna go the next day.

And without further ado...

Disclaimer: As much as I'd love to, I don't own anything!

Chapter Ten: Sirius Black

And I had my heart beaten down, but I'm always come back for more, yeah. There's nothin' like love to pull you up, when you're lying down on the floor, babe. So talk to me, talk to me, like lovers do. Yeah walk with me, walk with me, like lovers do. Like lovers do.

-Taking Chances by: Celine Dion

She'd passed the test. With a big grin plastered on Callista's lips as she all but skipped through the corridors, she tossed her hair back, the sense of victory sweeping over her. She'd passed her test. She knew it was mostly because of the Liquid Luck she'd drank just before and she knew she'd get in trouble if anyone knew she'd drank it, but she was giddy. Letting out a giggle, she sighed, looking out at the moon, knowing that even the bloody orb in the sky couldn't bring her down from the high she was on. It'd been years since she'd done it, but now she was able to look outside and enjoy the beauty of the almost full moon, glowing in the sky. And then the thought hit her…the moon. Her icy blue eyes went a little bit wide and she did a full one hundred-eighty degree turn on her heel, remembering her first day of Defense Against the Dark Arts again. It was almost the full moon; Remus must've been having a hard time… Surprisingly enough, the pain that usually came with his name wasn't showing up and she took that as a sign. She frowned at the though of him, one of the most wonderful people she knew, one of the two people who knew her secret, being unhappy. Her hand instantly dipped into the pocket of her robe, to grab the bar of chocolate that he'd given her on the train ride at the beginning of the year. She gave it a light squeeze and a smile spread onto her lips.

She was going to go see him; she was going to give him the chocolate bar. If anyone needed some chocolate at this time of month, it'd be him. Her mind drifted back to the food that'd surely be waiting for her down at the Halloween feast, but for some reason, it held no appeal to her. Her body was practically pulling her to Professor Lupin's classroom, and with the Liquid Luck in her system, who was she to refuse what fate wanted her to do. Making her way back down the hall, she'd found herself in Remus's office within only a few minutes, watching as the tall brunette stood, pacing right near his desk. She knew that he was dreading the full moon, which would likely be tomorrow night. Instead of leaving him at peace with his thoughts at the sight of him pacing, she simply took a few steps in, making them loud enough so that he'd notice she was there. Instantly he whipped around, eyes locking onto hers as she walked into the back of the room, where he was at.

"Callista…shouldn't you be down at the feast?" He asked, voice sounding strained.

"I suppose so." She shrugged. "But on my way from Charms and I noticed the moon outside and figured you might need this." She replied, pulling the chocolate out of her pocket. "I mean neither of us are a fan of the full moon, and I figured you needed this more than anyone." She smiled, in a way that she hoped looked soothing. He smiled as well but it was far more strained and he nodded.

"Set it on my desk." He nodded towards it. "And then you'd better get on your way to the feast."

"But what about you?" She asked, brow quirked. "Aren't you hungry or do you not have an appetite before the transformation?" She asked when she noticed that his arms were rigid, tense even. She reasoned that he was probably just nervous about her taking their relationship too far again, but she was also able to reason that her good buddy Felix would stop her from doing anything that she shouldn't.

"No, just not hungry at the moment, but please…Callista, you should go…" He winced and yet she stood there with her brow quirked.

"Remus…" She started, taking a step closer to him and he turned away, something that he wouldn't have done on any other occasion. On any other occasion, she would've felt bad, felt like she'd done something wrong, but the Liquid Luck in her system wouldn't allow her to feel that way. She circled around his desk, placing a hand comfortingly on his forearm when she felt him tense even more.

"Callista…you really should leave…" He said through his teeth and she noticed that his eyes were pinched shut. "Please…" His tone was pleading, but still, it felt as though she wasn't supposed to leave, like her body wouldn't leave the room, even if she wanted it to. No…but her body did want to do something else, something that she'd been repressing for quite some time now, something that she wasn't supposed to do ever again. She wouldn't have been able to do it any other time, but now…she couldn't not do it. Her hand curved around his forearm and his gaze darted over to her, eyes moving up and down her figure, something that Draco had done a thousand times, but with Remus, it didn't bother her…She racked her brain for his first name, feeling a little bit like she was in a daze.

"Remus…" She breathed and his eyes went wide, right as she leaned on her toes and kissed him on the lips, cupping his face in her hands. She pulled away, after a few seconds and looked up at him, expecting him to be both shocked and upset, but instead, all she saw in his eyes was the unmistakable glint of lust.

"I told you, you should leave Cal…" He breathed before grabbing his face in her hands, kissing her roughly on the lips. She gasped at his reaction, allowing him to push his tongue into her mouth and she groaned, feeling her body cave. Noticing the sudden weakness, Remus wrapped an arm tightly around her waist and took the other hand to push the contents of his desk onto the floor before scooping her into his arms and laying her on it.

Before she had the chance to move, he quickly straddled her hips, moving down to kiss her roughly on the mouth and she trapped his head with her arms. This was supposed to be wrong and somewhere in the back of both of their minds they knew it. But that didn't stop either of them.

As he lay on top of her, lips meshing with hers, Remus's hands raked their way down her body, feeling every ounce of curvature, every flaw, every perfection, every ounce of her clothing. Clothing… It didn't take long for him to tear her shirt off, not even bothering with the buttons. No not now, not just before the full moon. He couldn't treat her to anything slow or romantic. But somewhere in the logical part of his mind, he knew he'd better make it good, he knew that this time of month would be the only excuse he had for jumping on her like this, so he'd better memorize everything he could.

With the sudden exposure of flesh, Callista gasped, throwing her blonde head back and away from the kiss, allowing him a better exposure of her neck, which he lay several wet, warm kisses down until he touched her shoulder bone, drawing his lips back up to the crook of her neck, sucking on the soft flesh, which caused a whimper to erupt from her lips and for her to cling even tighter to his form, wrapping her legs around his torso. However the chokehold on his head was getting rather impossible. He snatched up her wrists and pinned them above her head, continuing his actions. When he was through, having left a thorough mark on her neck his eyes moved down to her chest and he lifted her up for a minute, quickly unclipping her bra and tossing it aside before her back hit the desk once again.

"Remus…" She breathed, staring up at him, knowing that her eyes were mirroring the lust that she'd seen in his. "I…I need you…" She winced, hands clenching into tight, controlled fists above her head and he shook his head. It seemed strange that she needed him so badly with so little foreplay, but then he reminded himself that she'd been attempting to control her desires for as long as he had.

"A few more minutes…" He whispered, knowing that he'd only get this once, only get to have this beautiful, brilliant girl once. His lips moved to her small breasts and he took one of them into his mouth fully, feeling her body tense beneath him and he grabbed on even tighter to her waist. His tongue traced over her nipple, feeling as it hardened and she moaned, right as his teeth came into contact with it, biting down lightly.

He wanted to take more time with her, truly he did. But people would notice they'd been missing from the feast. Someone could come looking for them and his lust was getting to be too much for him. He removed his attention from her chest and allowed her to remove his shirt, her hands shaking a little as she undid each button.

"Are you alright?" He asked, the bona fide Remus kicking in for just a moment and she nodded, pulling off his shirt.

"Just not what I expected to get from tonight...." She breathed, taking in his appearance. It was even better than she'd imagined, what with the toned, muscular chest, the slim, lithe torso and the broad, strong shoulders. It took her a moment, but she'd finally managed to tear her eyes away from his body. "But you can't stop…" She insisted, eyes filling with worry and he chuckled a small amount, bringing his lips—which were curved into a wolfish grin—to her ear.

"Believe me Callista, I couldn't even if I tried to." And then he was nibbling on her earlobe, an innocent enough action, if his hands weren't behaving the way they were, sliding the zipper of her skirt down and pulling it off of her, along with her underwear, then her flats, leaving her in nothing but stockings, exposed underneath him. He let a finger dive into her and she gasped, letting out a moan as well.

"Yes!" She choked, long fingers clenching into a very tight fist. And another finger. "Merlin, I—" and then another. At first, he moved them in lazy circles, teasing her for the first time that evening. Her body became weaker, muscles almost turning into putty in his hands. He was driving her crazy on purpose, still having her wrists pinned up above her head with his free hand. She was turning to mush, he should've known that this teasing couldn't continue forever, she thought. Not when everything else about this encounter had been very quick. And it was as if he read her mind, because then he started to move faster. In wider circles but they were much faster and caused her body to go tense once more, back arching with each circle he made. "Remus!" She pled, eyes locking onto his.

"Now?" He asked, hands swiftly removing his belt and she nodded.

"Now!" She commanded and in that instant he was inside of her. "Remus!" She choked out, arching her back and he held her torso close to his, keeping his arms tight around her waist so that she was unable to move her upper half. Her hips were pressed against his and somehow, through her lusty daze, she'd been able to think clearly enough to grind her hips against his, with him still inside of her. He groaned and moved his lips back down to hers, which stifled the moan that erupted when he thrust into her once more. Once again, she pressed her hips forward, against his, allowing each thrust to rock the both of them a little bit. With the new rhythm of the rocking sensation allowing more tension to flow through her veins, she wrapped her stocking covered legs around his waist, and her recently freed hands hand moved to grip his shoulders.

For a bit, everything was bliss. Sheer, undeniable bliss and a tangle of legs and moans. However, it didn't last long enough. She was far too tight for her own liking and with such, quick, sloppy, lustful movements, she wasn't bound to last long. Her muscles quaked, her vision glazed over and she knew that his name spilled out of her mouth, probably loud enough for someone in the Great Hall to hear. Thank Merlin, she felt him come inside of her shortly after and then withdraw himself.

Neither got a chance to cling lovingly to each other, not with the volume of the scream that Callista's orgasm had produced. Surely someone would've heard it and have been coming to look and see what all of the noise was about. With all of the lust clouding their minds, neither had remembered to cast a silencing charm. Instead, they peeled apart, feeling each others sweat on their own skin, and quickly dressed, stuck in a silent stupor. Only when the clothes were back on and Callista had attempted to salvage her hair did either speak.

"I'm sorry about that Callista…" He muttered and she quirked a brow at him.

"Sorry?" She repeated, eyes on him, however his back was turned to her.

"That was utterly inappropriate of me, you're a student, I'm a teacher and you're a good eighteen years younger than I am, I shouldn't have done that." He whispered, still not turning to face her.

"Remus, I—" But she didn't get to finish, in that instant, Professor Snape waltzed into the room, dark eyes glancing at the quills, parchment and ink that were on the floor of around Remus's desk.

"Miss Finch, what is it you're doing in here and not down at the feast?" He asked in his slow drawl and her eyes widened, no answer coming into her mind.

"That was my fault Severus. Callista came to me, asking me for some help in my class." Remus lied quickly and Callista instantly nodded, sloppy blonde curls falling into her face. She knew that Snape didn't buy the lie. She didn't either, but there was nothing he could do about it. He couldn't prove anything.

"Well, Callista, I do believe we're finished here." Remus commented and the blonde's lips fixed into a hard line. No they weren't. What was his problem? One minute he was telling her to leave, then the next he was straddling her on his desk and now he was practically saying that it was just some sort of mistake. Frustration swept over her until she remembered…the moon. Obviously he was struggling with a lot of things right now, it was best to just leave him be.

"Yes, thank you, Professor…" She replied, allowing that single word to glide off of her tongue with more seduction than the others.

And with that she was off, back to the Gryffindor tower, since she knew the feast was over. It was a shame, really. She was starving. On her way up, she'd gotten lucky enough to meet up with Ron, Hermione and Harry, who had all bought the lie that she was too nervous about what her grade on the Charms test had been to eat. As the four maneuvered up the staircase, they found themselves stuck in the middle of the staircase in question, being as it was jammed with students.

"Why isn't anyone going in?" Ron asked, curiously. The four peered over the heads in front of them, noticing that the portrait appeared to be closed.

"Let me through, please!" Percy's arrogant tone came from behind them and he shoved through the crowd, as though he was more important than the rest of them. "What's the holdup here? You can't all have forgotten the password—excuse me, I'm Head Boy!" He said snootily, shoving passed several more students. And then he was quiet, something that was abnormal enough to cause a child to go through Callista's spine. "Somebody get Professor Dumbledore, quick!" The quartet looked around and Callista stood on her toes, hoping that being tall would mean something now, but considering most boys in Gryffindor had hit puberty, they were taller than her and her sight was blocked off.

"What's going on?" Ginny sounded off from behind the quartet and right as she spoke, Dumbledore was there, pacing urgently towards the portrait and unlike with Percy, the Gryffindors let him through easily. Turning to the others, Harry nodded at Callista, Ron and Hermione and the four followed quickly behind Dumbledore, hoping to get a better look at what was going on. Strange, but Callista thought that perhaps her Liquid Luck would help her through any sorts of problems. Forcing her out of her reverie, Hermione grasped Callista's arm and the blonde turned to stare at her wide eyed friend.

"Oh, my—" And then Callista saw it. The fat Lady was not in her portrait, in fact the portrait had been slashed so violently that strips of the canvas soiled the floor. Dumbledore was only taking a quick glance at it and in that instant, he turned his somber expression to see Professor McGonagall, Snape and Remus all hurrying towards him. Callista went to grip Remus's arm and ask him what was going on, but figuring that that sort of thing might be a little much in this situation and that he probably knew as little about what was going on as she did, she decided against it.

"We need to find her." Dumbledore finally spoke, turning to the Professors. "Professor McGonagall, please go to at once and tell him to search every painting in the castle for the Fat lady."

"You'll be lucky!" All heads turned as Peeves the Polergeist came bobbing over the crowd, looking delighted, which was never a good sign.

"What do you mean, Peeves?" Dumbledore asked so calmly that Peeves's grin faded a little.

"Ashamed, Your Heaship, sir. Doesn't want to be seen. She's a horrible mess. Saw her running through the landscape up on the fourth floor, sir, dodging between the trees. Crying something dreadful." His grin was back. "Poor thing."

"Did you see who did it?" Dumbledore asked quietly and Peeves nodded.

"Oh yes, Professorhead. He god very angry when she wouldn't let him in, you see…Nasty temper he's got, that Sirius Black."