Professor MacGonagall turned to the other teachers.

"Evacuate the school." she ordered.

She then got on the teacher's platform to talk to the pupils.

"All students from year one to five must leave the school immediately. Your professors will escort you until they are certain you are perfectly safe. To the students from year six and seven who want to fight this battle... I implore you to renounce and go as well. I don't want to have your death on my conscious. But you are of age, or about to be, and I cannot force you to go. Those who want to fight, get ready."

The evacuation hence started, and Edmund saw Ron try to convince his sister to go as well. He was unsuccessful. Once the conversation was over, he walked to them, and talked to Ginny.

"Ginny, do you remember me?"

"Yes. You're Edmund."

"You know my sister?" Ron asked in disbelief.

"Yes. We met in a dream on her first year. It would be too long to explain. Where is the book?"

"I don't know. I gave it to Fred and George and told them to hide it."

"Could it be in the requirement room?"

"I doubt so. I don't think my brothers knew the room."

Edmund gravely nodded.

"Thank you for the dagger." he said. "It helped a lot."

"Dagger, what dagger?" Ron asked.

"Now is not the right time for this talk." Ginny replied. "We have a war to prepare. MacGonagall wants to talk to you."

And on these words, she left them. The Metamorphosis teacher instantly came to them, as Hermione joined them.

"You are mad coming up here!" She said. "What do you need?"

"Time, Professor." Edmund said. "As much as you can."

"We'll do our best. Did you destroy the last horcruxes?"

"We found the cup, and destroyed it. Luna knows where the tiara is, and we're trying to find a way to destroy it, as we no longer have the sword. I know how to destroy the diary, which leaves us only with the snake. Everybody has to try to kill it."

"We've sent a message to the Order for reinforcement." Hermione completed.

"And the reinforcement is here!" A voice claimed from the room entrance.

They all turned to discover the entire Weasley family, as well as every magician members of the Order. But they were not alone. With them were four other people Edmund knew very well. Peter, Suzanne, Lucy and Caspian. He ran to them, as Ginny ran to her family.

"What are you doing here ?!" He asked, both surprised and delighted.

"Aslan sent us to help you." Peter replied. "What's going on?"

"We have to fight an army of bad wizards (we are with the good ones). And then we have to destroy an indestructible tiara, kill a snake, and kill the bad guy in chief."

"Does this bad guy have a name?"

"He does. But it is forbidden."

Professor MacGonagall walked to them.

"His name is Voldemort. And he's gonna try to kill us in less than an hour, so we might as well call him by his name."

And Edmund couldn't help being impressed by the old lady.

"There's something else we have to do." Hermione declared. "We have to bring Harry back to life."

Shock painted on the teacher's face.

"H... how?"

"Edmund and I will use a special time turner. But our bodies will stay behind us while we are gone, and if something happens to us, we won't be able to make it back. You have to protect us while we are gone."

All the Weasleys had listened to the conversation, as well as the other members of the order.

"Right." Bill interfered. "I think we should start by destroying the tiara. I'm guessing it's a Horcrux?"

"It is." Edmund said. "Do you know how to destroy it?"

"I'm a curse-breaker. That's my job to think about that. How did you destroy the others?"

"We used the sword of Godric Gryffindor for the necklace and the cup, and basilisk venom on the ring. But we have neither of that."

"All right. If I remember correctly, the blade of the sword had absorbed basilisk venom, since Harry killed the snake with it in the chamber of secrets. Does any of you know where we could find basilisk venom?"

"In the chamber, Ron said. The snake's skeleton should still be in there, and we could use one of its fang."

"Yes, but we can't open it, Ron. None of us is a Parseltongue. Bill, what else could destroy a horcrux?"

"Erm..." Peter said. "I don't know if it can help, but Aslan gave us that."

He took a small crystal bottle out of his pocket.

"What's that?" Bill asked.

"He said it's Jadis' blood."

The elder Weasley took the bottle and looked at it, puzzled. It was Hermione who caught the clue.

"She's a Djinn!" She exclaimed. ""You, Diggory Kirke, descends from Adam and Eve, Jadis is a daughter of Lilith"! That's what Aslan says to Diggory in the magician's nephew. And, according to religious muggle beliefs, Lilith is the queen of hell, and the very first Djinn."

"Religious muggle belief?"

"Yes, what they can't explain, they conclude it's either from Heaven or from Hell. Djinns are demons, veelas are succubus, etc... but we know Djinns are just magical creatures, and they do exist. Lilith must have existed in some shape or form, and Jadis is her descendant."

"Okay." Bill said, thinking out loud. "Djinns blood is a very strong poison, and it's often used in deadly potions."

"Could it work?"

"Yes, it could. Let's not waste our time. Where's the Horcrux?"

"Luna!" Edmund called.

The young Ravenclaw came to them, a questioning look on her face.

"Can you take us to the tiara?" He asked.

"Follow me!" She smiled.

"What about us?" Caspian asked. "What do we do?"

"Go to the great hall." Hermione said. "They are talking strategy. Join them and get ready for battle."

And so Ron, Hermione, Bill and Edmund followed Luna, who took them to the requirement room. This time, the door opened on a huge storage room. The young woman guided them through the maze created by the piles of chairs and the weird objects, until they reach a little box, in which was a beautiful tiara.

"Does anybody want to do it?" Bill asked nervously.

"Be our guest..." Hermione replied.

The young man had a nervous laugh, and then breathed deeply. He then opened the bottle that contained Jadis' blood, and carefully poured it on the tiara. Under their eyes, the tiara started dissolving, and a toxic gas started rising from it. Edmund was the first one to experience the effects. He was barely able to breathe. Soon enough, Ron, Hermione and Bill experienced the same thing. Luna was the only one who didn't seem to be affected. She took out her wand.

"Ventus!" She cast.

And she pushed the gas away, and started to back up to the exit, imitated by the others. When they were finally out of the room, she closed the door, and the others started catching their breath.

"Thank you, Luna..." Bill managed to say.

And the others nodded to show their agreement.