Harry Potter and the Methods of Rationality

since the beginning. The court Legilimens said that someone had used Legilimency on Granger. Dumbledore admitted that it was him. And I bet the wards did go off when Granger cursed me and Dumbledore just ignored them."

"But -" Harry said. He looked at Lucius, wondering if it was really to his advantage to question this idea. "What would be his motive? Are we going to say he's evil and leave it at that?"

Draco Malfoy jumped out of his chair and began pacing around the room, black robes swishing behind the young boy, the goblin guards staring at him in some surprise through their enchanted goggles. "To figure out a strange plot, look at what happens, then ask who benefits. Except that Dumbledore didn't plan on you trying to save Granger at her trial, he tried to stop you from doing that. What would've happened if Granger had gone to Azkaban? House Malfoy and House Potter would've hated each other forever. Of all the suspects, the only one who wants that is Dumbledore. So it fits. It all fits. The one who really committed the murder is - Albus Dumbledore!"

"Um," Harry said. "But why give me an anti-troll weapon? I said it was suspicious, I didn't say that it made any sense."

Draco nodded thoughtfully. "Maybe Dumbledore thought you'd stop the troll before it got Granger and then he could blame Father for sending it. A lot of people would be very angry if they thought Father had even tried to do something like that, in Hogwarts. Like Father said, Dumbledore must've lost face when people found out that a student had actually died in Hogwarts, being safe is what Hogwarts is famous for. So that part probably wasn't supposed to happen."

Harry's mind involuntarily flashed back to the horror in Dumbledore's eyes when he'd seen Hermione Granger's body.

Would I have gotten there in time, if the Weasley twins hadn't had their magic map stolen? Could that have been the plan? And then, though Dumbledore didn't know it, somebody stole their map, and I was too late... but no, that doesn't make much sense, I found out too late, how could Dumbledore have guessed that I'd use a broomstick... well, he did know I had one...

There was no way a plan like that could work.

And it hadn't.

But someone going a little bit senile might expect it to work, and a phoenix might not know the difference.

"Or," Draco Malfoy continued, still pacing energetically, "maybe Dumbledore had an enchanted troll around, and he expected you to defeat it some other time, for some other plot, and then he used the troll on Granger instead. I can't imagine Dumbledore had this all planned since the first week of lessons -"

"I can imagine," Lucius Malfoy said in low tones. "I have seen such, from Dumbledore."

Draco nodded decisively. "Then I was never supposed to die in the first plot. Dumbledore knew Professor Quirrell was checking on me, or Dumbledore planned to have someone else find me in time - I couldn't have testified against Granger if I was dead, and he'd have lost face if I'd died. But my leaving Hogwarts and not being around to lead Slytherin would be just right for him. And then the next time Harry was supposed to stop the troll before it got Granger and everyone was supposed to blame you, Father, only that time it didn't go the way Dumbledore planned."

Lucius Malfoy lifted his grey eyes, from where he'd been gazing with open surprise at his son. "If this is true - but I wonder if Harry Potter is only playing at being reluctant to believe it."

"Maybe," Draco said. "But I'm pretty sure he isn't."

"Then, if it is true..." Lucius Malfoy's voice trailed off. A slow fury was lighting in his eyes.

"What would we do, exactly?" Harry said.

"That, too, is clear to me," Draco said. He whirled on them and raised a finger high in the air. "We shall find the proof to convict Dumbledore of this crime, and bring him to justice!"

Harry Potter and Lucius Malfoy looked at each other.

Neither of them quite knew what to say.

"My son," Lucius Malfoy said after a time, "truly, you have done very well this day."

"Thank you, Father!"

"However, this is not a play, we are not Aurors, and we do not put our trust in trials."

Some of the light went out of Draco's eyes. "Oh."

"I, ah, do have a sentimental fondness for trials," Harry interjected. I cannot believe I am having this conversation. He needed to go home and take a sheet of paper and a pencil and try to figure out whether Draco's reasoning actually made sense. "And evidence."

Lucius Malfoy turned his gaze to Harry Potter then, and his eyes simmered in pure grey fury.

"If you have deceived me," Lucius Malfoy said in tones of low anger, "if all this is a lie, then I will not forgive. But if this is not deception... Bring me the proof to convict Dumbledore of this murder before the Wizengamot, or evidence enough to have him cast down, and there is nothing that House Malfoy will not do for you, Harry Potter. Nothing."

Harry took a deep breath. He needed to sort all this out and figure out the actual probabilities, but he didn't have time. "If it is Dumbledore, then removing him from the gameboard leaves a huge hole in Britain's power structure."

"So it does," Lucius Malfoy said with a grim smile. "Did you have ambitions of filling it yourself, Harry Potter?"

"Some of your opposition might not like that. They could fight."

"They will lose," Lucius Malfoy said, now with a face hard like iron.