A few minutes later everyone was at the great hall.

"Many of you must be wondering why I summon you here at this time of night. It has come to my attention that earlier today Harriet Potter has appeared." Snape said.

Everyone started whispering.

"Now... should anyone... student or staff attempt to aid Ms. Potter? They will be punished in a manner consistent with the severity of their transcription, further more... Any person found have knowledge of these events... who fails to come forward... will be treated as equally guilty. Another... If anyone in here has any knowledge of Ms. Potter's movements this evening. I invite them to step forward. Now!" he said.

Then someone appeared.

"It seems, despite your exhaustive defensive strategies, you still have a security problem, Headmaster." Harriet said.

People from the Order appeared with Neville, Ron and Hermione.

"I'm afraid it's quite extensive. How dare you stand where he stood? Tell them how it happened that night? Tell them how you looked him in the eye... A man who trusted you, and killed him." Harriet said. "Tell them!"

Snape pulled out his wand and Harriet and McGonagall did the same thing. Then she started aiming at him. And he just used a shield charm.

Then he flew away.

"COWARD!" McGonagall yelled.

Harriet pulled off her cloak. While McGonagall let off the candles.

A few seconds later Harriet's scar started burning.

"Potter?" McGonagall said.

"I know that many of you will want to fight. Some of you might even think to fight is wise. But this is folly. Give me Harriet Potter. Do this and none shall be harmed. Give me Harriet Potter, and I shall leave Hogwarts untouched. Give me Harriet Potter, and you will be rewarded. You have one hour." Voldemort said.

Everyone stood there quietly.

"What are you waiting for? Someone grab her!" someone said pointing at her.

Neville grabbed her hand and while her friends came and stood in front of her or next to her.

"Students out of bed! Students in the corridor!" Mr. Filch yelled.

"They are supposed to be out of bed you bombaling idiot!" McGonagall said.

"Oh, sorry ma'am." he said.

"As it happens, Mr. Filch, Your arrival is most opportune. If you would, I wouldd like you please, to lead Miss Parkinson and the rest of Slytherin house, from the hall." she said.

"Exactly where is it I'll be leading 'em to, ma'am?" he asked.

"The dungeons would do."

After that she looked at Harriet.

"I assume that you are here for something important. What is it you need Potter?" McGonagall asked.

"Time Professor. As much as you can give us." she said.

She nodded and Harriet started to leave.

"Potter."

She turned around and looked at her.

"It's good to see you."

"Good to see you to Professor." she said.

When they left the room Hermione called her name.

"Harriet!"

They turned around and looked at them.

"Hermione and I were thinking, it doesn't matter if we find the horcrux." Ron said.

"What do you mean?" Harriet said.

"Unless we can destroy it. So, we were thinking, well Ron was thinking which is completely brilliant. You destroyed Tom Riddle's diary with a basilisk fang, right?" Hermione said.

He nodded.

"Well, me and Hermione did remind where we might find one." Ron said.

"OK, OK well take this." Harriet said handing them the Marauders map. "That way, you can find me when you get back."

"Where are you two going?" Hermione asked.

"The Ravenclaw common room! Gotta start somewhere!" she said with a shrug.

"Harriet!" Luna said following them.

"Harriet I need to talk to you!"

"I'm a bit preoccupied at the moment Luna. We'll talk to you later." she said."

"But-"

"Later!"

"Harriet Potter! You listen to me right now!" Luna said.

She looked at her in shock a little.

"Do you remember what Cho said about Rowena Ravenclaw's diadem? There is not a person alive who's seen it. It's obvious, isn't it? We have to talk to someone who's dead." she said.

Then she followed Luna to find her. They stopped for a few minutes.

"It's very impressive, isn't it? If you want to find her, you'll find her down there." she said when they got there.

"Aren't you coming?" Harriet said.

"No. I think it's best if you two talk alone. She's very shy."

Harriet nodded and walked over to her. When she found her she stood there quietly for a second.

"You're the Grey Lady. The ghost of Ravenclaw tower." Harriet said.

"I do not answer to that name!" she said and started to leave.

"No, I'm sorry, we're sorry! It's Helena, isn't it? Helena Ravenclaw, Rowena's daughter."

"Are a friend of Luna's?" Helena asked.

"Yes. And she thought you might be able to help us." Harriet said.

"You seek my mother's diadem?" she said.

"Yes. That's right."

"Luna is kind. Unlike so many of the others. But she was wrong, I cannot help you!" she said.

"Wait, please! We want to destroy it!" Harriet said.

She froze and turned around.

"I thought you want to do it. Isn't it, Helena? You want it destroyed?"

"Another promised to destroy it many years ago. A strange boy with a strange name?"

"Tom Riddle."

"But he lied."

"He lied to many people."

"I know what he's done! I know who he is! He defiled it, with dark magic!" she yelled.

"I can destroy it. Once and for all. But only if you tell us where he hid it? You do know where he hid it? Don't you, Helena? You just have to tell us. Please!" she said.

"Strange! You remind me of him a bit." she started going around Harriet.

"It's here, in the castle. In the place where everything is hidden. If you have to ask... you will never know. If you know... you need only ask." she said getting away from her.

"Thank you!" she said together.

Then she headed to where they needed to be.