G. Lippert - James Potter and the Curse of the Gatekeeper

"It was Petra?" James whispered, barely allowing himself to consider it. "That can't be!"

Ted nodded seriously. "She doubted it herself. She went to Merlin about it, and showed him the letter. He offered to show her the truth in that Magic Mirror of his, but he warned her that she might not truly wish to know. She looked anyway, and she saw it all, exactly as it'd happened. They threw her father into the Dementor pit. It was… it was awful. She was completely devastated."

Rose glanced from James to Ted, her eyes wide. "But she never told anyone she was an orphan, did she? We all assumed she had a mum and dad like the rest of us!"

"Petra was raised by her grandparents, but she never told us that," Ted replied. "The Gremlins and I, whenever we saw them at the station, we just assumed they were her parents and that they'd had her late in life. She never talked about them, and we always sort of guessed that she didn't have a very happy home life. They'd only ever told her that her mother had died in childbirth. They never spoke of her father at all, and Petra learned not even to ask."

"I should've known," James said, touching his forehead. "I saw her in my dreams over and over. I believed it was Tabitha because I couldn't see her face, but it all fits now. The dark shape in the corner… it talked about restoring the people she'd lost. It told her she would be allowed to avenge them, and even get them back. I even saw them… her parents, reflecting in a sort of glowing green pool! Petra believes the Ministry killed her father, and her mother died as a result, and now she's going to do what she thinks she has to do to get them back! The dark shape in my dreams, it said there was only one way to do it—blood for blood!"

"Lily!" Rose gasped, covering her mouth.

"She wouldn't!" Albus said, shaking his head. "Petra would never hurt Lily. Would she?"

"Morganstern!?" Tabitha half sobbed. "Impossible!"

"Not really," a different voice answered mournfully. "If you think about it, I mean."

Everyone turned to a ghostly figure seated on the windowsill in the corner.

"Myrtle!" Rose cried. "How long have you been there?"

"That's Moaning Myrtle?" Zane asked, arching an eyebrow. "I expected something a little more… er…"

"It's rude to speak of people as if they aren't there," Myrtle chided sadly. "Even if, technically speaking… they aren't. But don't worry, I'm… used to it." She sighed hugely.

James spoke up. "Sorry, Myrtle, but this is really important. What do you know about this?"

"Oh, now everyone runs to Myrtle, don't they? 'What have you seen, Myrtle?' 'Tell us everything you know, Myrtle.' But I know how it goes: the moment I tell you, you'll forget about poor, pathetic Moaning Myrtle. It was the same with your father, James Potter. Your brother looks a lot more like him, even though he's not got that silly fake scar on his forehead."

"What's she talking about, James?" Albus asked out of the corner of his mouth.

James shook his head. "I'm sorry, Myrtle, but this is really serious. Our sister is in trouble. You have to help us!"

"I know," Myrtle cooed. "Poor little Lily. Perhaps she'll keep me company here in the toilet."

"Myrtle!" James cried, exasperated, but Rose placed a hand on his chest, stopping him. She turned to the ghostly figure, a thoughtful look on her face.

"You know, Myrtle, if you help us, I bet Lily's father would be really grateful. I bet he'd even come to visit you, to tell you how much he appreciates all your help."

Myrtle looked petulantly at Rose. "Harry? He wouldn't. Would he? He probably doesn't even remember me."

"I'm certain that he does," Rose said confidently. "I've heard him speak of you. He'd probably be very pleased to, er… catch up with you."

Myrtle seemed to brighten a bit. "Do you really think so? Oh, it's been so long, but I knew he'd come back someday. I've always had a special place for him."

"Yes," Rose nodded. "But first, do tell us. What have you seen? What do you know about Petra?"

"Oh yes," Myrtle replied morosely. "Poor thing. She never once spoke to me, you know, all the times she was here. She probably believed I couldn't see her under that Invisibility Cloak, but those only work on the living."

Zane stepped forward. "Petra has the Cloak! When was she here, Myrtle? What did she do?"

Myrtle flitted down next to Zane and placed a ghostly arm around his shoulders. "Oh, often. She spent the most time down there over the holidays, when few other people were in the school. But she's been down there at least once a week lately. I don't know what she does down there, of course. I, er… don't follow her. But then, not twenty minutes ago, she came through with little Lily. Just before Tabitha came back again with that silly map."

"Where did Petra take Lily, Myrtle?" Ted asked impatiently. "Did they go into the Chamber of Secrets?"

"Well, of course, you silly boy," Myrtle said, tilting her head coquettishly. "Where else?"

Albus shook his head, exasperated. "Why didn't you tell anyone?"

Myrtle peered at him mistily. "Because no one ever asked," she answered simply.

James turned, stalking back into the center of the room. "How do we get down there?" he demanded. "Where's the door?"

"Hah!" Tabitha exclaimed, still crumpled on the floor under the watchful eye of Ted Lupin. "You'll never get through! If I couldn't open it, no one can! Only the true Bloodline can speak the incantation to open the Chamber of Secrets!"

"Is that true, Myrtle?" Rose asked, turning back to the ghost.

"Oh no," Myrtle replied, shaking her head slowly. "No, no, no. Loads of people have opened the Chamber. That horrible Ron Weasley opened it years ago, just by imitating the sounds Harry Potter had made. If he could do it, anyone could."

"You worthless little—" Tabitha cried, straightening. "All that time you watched me trying… You let me make a fool of myself!"

"You didn't need my help," Myrtle sniffed.

"Myrtle," James said seriously, stepping carefully toward the ghost. "We don't have much time. Can you tell us the incantation?"

"Don't you dare!" Tabitha exclaimed, her voice splintering.

"That's enough out of you, Corsica," Ted warned, raising his wand. "Shut up or I'll Stun you. It's the least you deserve."

"It's an awful sound," Myrtle said, ignoring Tabitha. "It gives me shivers to hear it, and I'm dead. I always jumped down into my U-bend before Petra said the incantation."

"Please, Myrtle," Rose begged. "How does it go? We have to get down there."

Myrtle looked sideways at Rose, raising one eyebrow. "You really think Harry will come and see me? You promise?"

"I promise," Rose nodded. "Please tell us."

Myrtle sighed and flitted slowly to the center of the room. Carefully, she opened her mouth and produced a horrible, hissing noise. It was guttural, almost gurgling. It made James' hair stand up.

When she was finished, Zane looked around and asked, "So who's going to do it? I know I can't make a sound like that."

Ralph took a deep breath. "I'll try it," he announced, sighing with resignation. "After all, I'm a Slytherin."

Nobody argued. Ralph opened his mouth and imitated the noise as well as he could. James thought he did a remarkably good job since the same sounds in Ralph's mouth still sent chills down his spine. As soon as he finished, a grating rumble shook the bathroom. The sink directly behind Ralph began to lower, receding into the floor. Tabitha gasped and moved aside, her pale face a mask of awe and jealousy.

"Come on," Ted said grimly. "We have to hurry."

"You can't go, Ted," Rose said, touching Ted's arm. "Unless you plan on taking Tabitha along, too. She's a seventh year. I might be able to guard her, but I'd feel a lot better if you did it."