When Calla awoke on the Sunday morning, it was in the Ravenclaw dormitory, to see the sun slanting in through her curtains and the four other girls looking over her, even Daphne.

"Morning," Padma said with a gentle smile, kneeling down beside her bed. She reached out a gentle hand to hold Calla's, squeezing it tightly. "How are you feeling?"

She winced. "Tired."

"We heard McGonagall telling Flitwick that you found that Gryffindor kid, Colin Creevey petrified last night," said Lisa Turpin, looking concerned. "What happened?"

Her words got stuck in her throat as she tried to figure out what she could say, if anyone would believe the truth, or if they would condemn her for it. "I wanted to go and visit my brother," she told them eventually, looking down at her lap. It wasn't strictly a lie - she had wanted to see Harry - but that wasn't what had caused her to find Colin. "And I think he had the same idea, but he... he got attacked." A sob wrenched its way from her lips and Padma shifted to rub her back comfortingly. "I thought he was dead. He - he looked dead."

"That's horrible," said Mandy with a shudder. "And poor little Colin, he was only a first year, wasn't he?"

Calla nodded numbly. "Wasn't even twelve yet. He followed Harry about all the time too, he adored him." She felt tears prick her eyes and wiped them away furiously with the sleeve of her nightgown. "Madam Pomfrey said they can cure him, but I think it's going to take a while."

"The effects can be reversed with mandrake leaves," Daphne told the group, startling Calla. She turned to stare at her.

"How do you know?"

She shrugged and tossed her hair behind her shoulder. "I've been doing my research on it. It was only a matter of time before there was another attack, and well, now we know for certain that the chamber of secrets is open again."

Lisa Turpin's face turned pale. "It's all true, then," she whispered, more scared than Calla had ever seen her. "We have to let Isobel and Terry know, they're in even more danger now. We shouldn't let them go places alone, they could be vulnerable."

Calla and Padma nodded their agreement. "Let all the Ravenclaws know," Padma suggested. "Terry and Isobel aren't the only muggleborns in our house, after all."

"That isn't all," Calla added, getting their attention back on them. She swallowed nervously. "Dumbledore knows who it is."

"What?" Mandy hissed. "Will they be expelled?"

"I assume they'll be taken to Azkaban," Lisa told them, and Calla tried to recall what that meant. It was the wizarding prison, she remembered, guarded by something, though she wasn't sure what. Padma had said loads of old Death Eaters were kept there.

"Well, then we're safe, aren't we? Dumbledore will see to it that they're brought to justice."

"I don't know," Daphne said, quietly. "I - I know who opened the chamber last time, I've been asking around recently. I thought it could be one of the Flints, but it isn't. Last time, it was Hagrid."

Calla's stomach plummeted as she stared at Daphne. "Excuse me?"

"It can't have been Hagrid," Padma argued, scoffing. "Have you even met him? He's the nicest person ever, and he adores Hermione, and she's a muggleborn."

"And he told me and Harry he was a Gryffindor, not a Slytherin," Calla protested, though a seed of doubt remained. She tried to push it away, but it still terrified her. Had she been wrong about Hagrid all this time? But it didn't make sense, her instincts screamed at her. Why would Hagrid want to get rid of muggleborns. "It can't be Hagrid."

"Well, it was last time," Daphne said with a shrug. "Believe me or don't believe me, it's your choice, but Dumbledore will know. I hate to admit it, but Hagrid's already been found guilty once, and he doesn't have any children, so it has to be him who's opened the chamber. I'm telling you now, by the end of the week, he'll be in Azkaban." She shuddered. "I just wish it weren't true."

"Well, it's not," Padma argued fiercely, surprising Calla as she glared at Daphne. "And why should we listen to you anyway, you've been avoiding us for weeks, ever since the first attack." She narrowed her eyes. "I think you're hiding something, Greengrass." She spat her name out with such disgust that Calla nearly recoiled from her, and exchanged a confused glance with Mandy, who looked like she would rather be anywhere but the Ravenclaw dorm right now, in the middle of this battle.

"Are you trying to accuse me of something, Patil?" Daphne asked, voice dangerously low and bordering on furious. Her glare was fierce and her blue eyes crackled with a warning to back down.

Padma did not back down, instead stood up, staring Daphne in the eyes. "I think it's rather suspicious that the day after Mrs Norris was attacked, you immediately stopped talking to us. You're from an old pureblood family, aren't you? One of the oldest, in fact."

"That doesn't mean anything," said Daphne in a tight voice. "I haven't done anything, you idiot, I've been trying to get information out of the Slytherins. That's how I found out that Hagrid is behind it."

Padma scoffed. "Yeah, right. Since when has Hagrid ever tried to hurt someone?"

"You tell me, he's the one with the weird fascination for evil creatures. Or did you forget about the three headed dog?"

"Fluffy wasn't hurting anyone!" Padma cried. "He was protecting the stone! Hagrid wouldn't hurt anybody, I know he wouldn't! And besides, how do we know you're not just using this as a coverup?"

"Because I'm not!" Daphne shouted back. "Ask Dumbledore if you don't believe me, Patil. Like it or not, I'm telling the truth."

"Get out," Padma muttered, glaring at Daphne.

"Padma-" Calla began, sensing the tension that would only grow from here. "Maybe we should listen."

"No," she said fiercely. "She's a liar, and she's hurt us before. I won't have her wrongly accuse Hagrid."

"Fine," Daphne said, voice cold and unfeeling. "If that's what you think of me, then maybe I'm better off with the Slytherins anyway."

With that, she turned on her heel and stalked out of the dormitory, slamming the door behind her.

There was a long, heavy silence before anyone spoke. "Well," Lisa began, voice shaky. "That was fun, wasn't it?"

Calla's head was still spinning from Daphne's reveal. She didn't believe that Hagrid was the heir of Slytherin, or that he would have anything against muggleborns. And even if he wasn't a fan of Filch - no one was, not really - he was a great lover of animals, cats included. He wouldn't have hurt Mrs Norris, it wasn't like him. But then again, he was expelled from Hogwarts when he was younger. Was it possible it was for opening the chamber of secrets?

"I'm going to get ready for breakfast," she said quietly. "What time is it?"

"Half past eleven," Padma supplied, eyeing her nervously. "We'll wait and go down with you, won't we?"

She gave Lisa a pointed look, and she nodded. "Yeah, of course."

xxxx

When Calla left the Ravenclaw Common Room, with the girls plus Anthony in tow, she nearly tripped over her own feet as she bumped right into her brother's back. "Harry?" she blurted out, surprised. "You're okay!"

He turned to her and grinned, waving his arm about for her to see. "Madam Pomfrey got me all fixed up."

"Oh, thank goodness." She smield, letting out a relieved sigh. "We're just going to breakfast, can you come?"

"Actually," Harry said, smile faltering. "I've just been with Ron and Hermione. There are some things we need to talk to you and Padma about. And you need to go and speak to Dumbledore, apparently, I think it's about last night."

Her blood ran cold. "They don't think I did it, do they?" she asked, voice shaking. Oh, she really hadn't thought it through, what if they thought it was suspicious that she was there, what if they thought that she was the attacker? But then she reminded herself, grasping at the straws of rationality, that Dumbledore knew who it was, and knew the chamber had been opened before. He knew it wasn't her, didn't he? Merlin, she hoped so.

"No, no," Harry assured her hastily. "I think he just wants to talk to you. He'll probably give you house points or something."

"Oh." Her stomach twisted. House points, for seeing an eleven year petrified and thinking he was dead? Somehow, she liked to think there were better things she could be recognised for. "Okay."

"Hey," Padma said gently, putting an arm on her shoulder. "Let's get breakfast first, yeah? Then we can talk."

Calla smiled at her appreciatively. "Thank you."

xxxx

In the time that Calla went do, had, and returned from breakfast, no fewer than six conversations had ended when she walked past, and no fewer than ten muggleborns had scurried out of her way in the corridor. Each time, it made her feel more and more sick, and more and more eager to figure out who had really opened the chamber. She hated the idea that anyone would suspect her, the idea that anyone would think her hateful enough to be capable of hurting an eleven year old boy.

Padma and Harry both accompanied her to Dumbledore's office, as she paced nervously in front of the gargoyle statue. "Do either of you two know how to get in?" she asked them, pursing her lips. They shook their heads, and Harry shrugged. "Brilliant."

Calla turned to the gargoyle which overlooked the hallway, and swallowed nervously. "Um, hello?" she asked, shifting from foot to foot. "I, er, I've been asked to meet Professor Dumbledore." She glanced back at Harry, who gave her an encouraging thumbs up. "Could you let me in please?" The gargoyle statue did not respond. "I'm Calla Potter, by the way, if that helps." It did not.

She turned and looked nervously at her brother, but all he did was shrug. She couldn't actually remember how Uncle Moony has gotten to the office yesterday, she'd been more preoccupied with worrying over her brother. Maybe there was a password? She glanced at the gargoyle, who stared back unblinkingly.

"Uh... Hogwarts?" Nothing happened. "Phoenix?" Again, nothing. "Fawkes? Gryffindor? Teaching? Wizard? Dumbledore?"

"Ah, Miss Potter," his voice came pleasantly from around the corner as he appeared, smiling. "Do forgive me for making you wait." He nodded politely to Padma and Harry. "Might we proceed to my office? I have only a few questions for you about last night."

Calla looked back at her brother and friend. "Go," Harry assured her. "We'll be in the library."

She smiled. "Thanks."

The two waved and disappeared round the corner, leaving just her and Dumbledore again. This was becoming a rather common occurrence, actually. "Sherbet lemon," he said, as the gargoyle began to grind against the stone and turn, revealing a winding stone staircase.

"Woah." She didn't remember this happening yesterday, which was actually rather concerning. Whoops.

She followed Dumbledore up the steps, as the gargoyle guarded entrance closed behind them. The staircase seemed to him on forever, stretching upwards before her until at long last, they came to stop and Dumbledore led her into his office.

This time, she didn't look around, instead taking a seat as instructed by Dumbledore. "Miss Potter," he began, sitting down. "Can you tell me what led to you finding Colin Creevey near the hospital wing last night?"

Well, there was no use lying to Dumbledore was there? He knew about her visions anyway, even if he didn't know about the Marauder's Map. "I had a dream," she told him. "It was one of my visions actually, I think - it felt different than a normal dream. And when I woke up, I - I could tell it was going to happen soon, I could feel it." She looked down, cheeks aflame. "I know that probably sounds weird."

"Not at all, Miss Potter," Dumbledore assured her. "Do continue."

"Well, I knew Colin was near the Hospital Wing, I recognised the corridor. So I ran out, I wanted to get there as soon as I could, but-" she stopped herself, choking on her words. "I was too late."

He looked at her, sizing her up. "And is that all you saw, Miss Potter?"

She debated for a moment, before deciding to but the bullet and shake her head. "No, Professor. I also... In the vision I saw a pair of yellow eyes. It matched with one I'd had earlier, when Mrs Norris was attacked. There was a pair of yellow eyes, and the cat was chasing spiders, but then the cat stopped and the spiders kept going." She shrugged. "That one still doesn't totally make sense, but my visions can be different sometimes. I saw Harry with the bludger too, and I tried to stop that but I couldn't. I don't know if it's possible to change my visions."

Dumbledore smiled with the familiar twinkle in his eyes. "Well, we can always try." He paused, and Calla looked up. "If that's all you have to tell me, then you're free to go."

She bit her lip. It wasn't her business to say, but it seemed her visions were linked to the Chamber of Secrets more and more, and it could be important to note Harry's voices. But it was his secret to share, not hers. "Thank you, Professor," she said, standing up. "Um, I'll see you for my Occlumency lessons?"

He smiled as she left.

xxxx

It was a week later, when two exciting things happened.

For one, the Gryffindors finally deigned to properly involve Calla and Padma in the making of their Polyjuice Potion, which they planned to use to get information out of Draco Malfoy. Though Calla still wasn't quite convinced of his guilt, she couldn't argue that they needed to know, and any information they could get would be useful. The process of brewing the potion was rather therapeutic, she found, as she helped stir and stir, sitting cross legged on the floor of Moaning Myrtle's bathroom. They had about another three weeks to brew, and then the potion would, with any luck, be ready for consumption without killing anyone. Hopefully.

The other was an announcement made on the notice board in the Entrance Hall. Calla and Padma had been heading to dinner after their Herbology class when they saw the close knot of people clustered around the notice board, chattering excitedly.

"Wonder what that's all about?" Padma wondered, wandering over with Calla in tow. Ron, Hermione, and Harry were already there, as was Daphne Greengrass and a gaggle of Slytherins.

"Duelling club?" Calla said, reading the notice aloud. "Since when did Hogwarts have a duelling club?"

"Since now!" cried Daphne excitedly, turning to them. "The first meeting's tonight!"

Calla and Padma exchanged awkward glances, before staring at Daphne. "Okay."

Daphne's face fell and she glared, tossing her hair. "All I did was answer a question," she said, in an irritated voice as she turned away to the group of Slytherins, who giggled at something she said.

"Who's teaching it?" Calla asked her brother, who moved to stand next to her.

He wrinkled his nose in distaste. "Doesn't say. Flitwick, maybe, I've heard he's a pro."

"Reckon Slytherin's monster can duel?" Ron asked, though he still looked rather interested at the board. "Suppose it could be useful though. Do you think we ought to go?"

"I don't see why not," Padma said, nodding in agreement.

Calla and Harry exchanged excited glances. "We should do it," Harry said. "Mione?"

"Sure," she said, smiling, though there was still something uneasy about it, as the group moved off and headed to dinner.

They returned to the Great Hall later that night, at eight o'clock. It seemed a good proportion of the student body had turned out. Almost all of Gryffindor and Ravenclaw, with most of the Slytherins and Hufflepuffs joining too. Calla even noted the Weasley twins, laughing about something with their friend Lee the Quidditch commentator. The long dining tables that were usually seen in the Great Hall had vanished, and on the side of the wall where Slytherin usually sat, a golden stage had appeared, illuminated by floating candles overhead.

"D'you reckon Flitwick's teaching?" Michael Corner asked Calla, as the Ravenclaws stood in a huddle by the doors. "He's a duelling champion apparently."

"Dunno," Calla said, shrugging. "I hope so."

"I've heard it's Snape," Lisa told the group, craning her neck to try and catch sight of the sour-faced potions master. "He's been into the dark arts for years, you know, I wouldn't be surprised if he knew more dark curses than about anyone else outside of Azkaban."

Behind Calla, Daphne Greengrass shuddered. "Don't say that," she said, voice more gentle than it had been recently.

"Go hang with the snakes, Greengrass," Mandy hissed from beside Calla, who exchanged nervous glances with Padma.

"Maybe I will," she muttered, though she made no effort to move.

Instead, Calla and Padma caught sight of Harry, Ron, and Hermione entering the Great Hall and moved to join them, Padma lightly grumbling about Daphne's general presence. "Evening," Ron greeted them with a grin. "We're not late, are we?"

Calla shook her head. "Haven't started yet."

"Good," Hermione said, grinning. She moved forward, leading them further into the crowd of people. "I wonder who'll be teaching us?"

"Lisa says she's heard it's Snape," Calla told the group. "Michael says Flitwick."

Harry looked at her quizzically. "Lisa who?"

"Lisa Turpin," she said, staring at him. She was almost certain the name had come up in conversation before. And anyway, how would Harry not recognise the name? It wasn't like there were many people in their year, after all. "She's in my dorm."

"Oh." He shrugged. "Well, in any case, I don't care who it is, even if it is Snape. Just as long as it isn't-"

Hermione gasped. "Lockhart!"

The others all groaned, and Hermione looked rather affronted. "Guys, he is our Defense Against the Dark Arts Professor."

"Doesn't mean we have to like him," Calla muttered darkly, turning to see Lockhart stride down what appeared to be a catwalk in the middle of the Great Hall. A few students cheered and whistled, and he beamed, clearly soaking up the attention. Calla scowled. This was bound to be a disaster, she just knew it.