Home Chapter 1: A Day of Very Low Probability Chapter 2: Everything I Believe Is False Chapter 3: Comparing Reality To Its Alternatives Chapter 4: The Efficient Market Hypothesis Chapter 5: The Fundamental Attribution Error Chapter 6: The Planning Fallacy Chapter 7: Reciprocation Chapter 8: Positive Bias Chapter 9: Title Redacted, Part I Chapter 10: Self Awareness, Part II Chapter 11: Omake Files 1, 2, 3 Chapter 12: Impulse Control Chapter 13: Asking the Wrong Questions Chapter 14: The Unknown and the Unknowable Chapter 15: Conscientiousness Chapter 16: Lateral Thinking Chapter 17: Locating the Hypothesis Chapter 18: Dominance Hierarchies Chapter 19: Delayed Gratification Chapter 20: Bayes's Theorem Chapter 21: Rationalization Chapter 22: The Scientific Method Chapter 23: Belief in Belief Chapter 24: Machiavellian Intelligence Hypothesis Chapter 25: Hold Off on Proposing Solutions Chapter 26: Noticing Confusion Chapter 27: Empathy Chapter 28: Reductionism Chapter 29: Egocentric Bias Chapter 30: Working in Groups, Pt 1 Chapter 31: Working in Groups, Pt 2 Chapter 32: Interlude: Personal Financial Management Chapter 33: Coordination Problems, Pt 1 Chapter 34: Coordination Problems, Pt 2 Chapter 35: Coordination Problems, Pt 3 Chapter 36: Status Differentials Chapter 37: Interlude: Crossing the Boundary Chapter 38: The Cardinal Sin Chapter 39: Pretending to be Wise, Pt 1 Chapter 40: Pretending to be Wise, Pt 2 Chapter 41: Frontal Override Chapter 42: Courage Chapter 43: Humanism, Pt 1 Chapter 44: Humanism, Pt 2 Chapter 45: Humanism, Pt 3 Chapter 46: Humanism, Pt 4 Chapter 47: Personhood Theory Chapter 48: Utilitarian Priorities Chapter 49: Prior Information Chapter 50: Self Centeredness Chapter 51: Title Redacted, Pt 1 Chapter 52: The Stanford Prison Experiment, Pt 2 Chapter 53: The Stanford Prison Experiment, Pt 3 Chapter 54: The Stanford Prison Experiment, Pt 4 Chapter 55: The Stanford Prison Experiment, Pt 5 Chapter 56: TSPE, Constrained Optimization, Pt 6 Chapter 57: TSPE, Constrained Cognition, Pt 7 Chapter 58: TSPE, Constrained Cognition, Pt 8 Chapter 59: TSPE, Curiosity, Pt 9 Chapter 60: The Stanford Prison Experiment, Pt 10 Chapter 61: TSPE, Secrecy and Openness, Pt 11 Chapter 62: The Stanford Prison Experiment, Final Chapter 63: TSPE, Aftermaths Chapter 64: Omake Files 4, Alternate Parallels Chapter 65: Contagious Lies Chapter 66: Self Actualization, Pt 1 Chapter 67: Self Actualization, Pt 2 Chapter 68: Self Actualization, Pt 3 Chapter 69: Self Actualization, Pt 4 Chapter 70: Self Actualization, Pt 5 Chapter 71: Self Actualization, Pt 6 Chapter 72: SA, Plausible Deniability, Pt 7 Chapter 73: SA, The Sacred and the Mundane, Pt 8 Chapter 74: SA, Escalation of Conflicts, Pt 9 Chapter 75: Self Actualization Final, Responsibility Chapter 76: Interlude with the Confessor: Sunk Costs Chapter 77: SA, Aftermaths: Surface Appearances Chapter 78: Taboo Tradeoffs Prelude: Cheating Chapter 79: Taboo Tradeoffs, Pt 1 Chapter 80: Taboo Tradeoffs, Pt 2, The Horns Effect Chapter 81: Taboo Tradeoffs, Pt 3 Chapter 82: Taboo Tradeoffs, Final Chapter 83: Taboo Tradeoffs, Aftermath 1 Chapter 84: Taboo Tradeoffs, Aftermath 2 Chapter 85: Taboo Tradeoffs, Aftermath 3, Distance Chapter 86: Multiple Hypothesis Testing Chapter 87: Hedonic Awareness Chapter 88: Time Pressure, Pt 1 Chapter 89: Time Pressure, Pt 2 Chapter 90: Roles, Pt 1 Chapter 91: Roles, Pt 2 Chapter 92: Roles, Pt 3 Chapter 93: Roles, Pt 4 Chapter 94: Roles, Pt 5 Chapter 95: Roles, Pt 6 Chapter 96: Roles, Pt 7 Chapter 97: Roles, Pt 8 Chapter 98: Roles, Final Chapter 99: Roles, Aftermath Chapter 100: Precautionary Measures, Pt 1 Chapter 101: Precautionary Measures, Pt 2 Chapter 102: Caring Chapter 103: Tests Chapter 104: The Truth, Pt 1, Riddles and Answers Chapter 105: The Truth, Pt 2 Chapter 106: The Truth, Pt 3 Chapter 107: The Truth, Pt 4 Chapter 108: The Truth, Pt 5, Answers and Riddles Chapter 109: Reflections Chapter 110: Reflections, Pt 2 Chapter 111: Failure, Pt 1 Chapter 112: Failure, Pt 2 Chapter 113: Final Exam Chapter 114: Shut Up and Do The Impossible Chapter 115: Shut Up and Do The Impossible, Pt 2 Chapter 116: Aftermath, Something to Protect, Pt 0 Chapter 117: Something to Protect: Minerva McGonagall Chapter 118: Something to Protect: Professor Quirrell Chapter 119: Something to Protect: Albus Dumbledore Chapter 120: Something to Protect: Draco Malfoy Chapter 121: Something to Protect: Severus Snape Chapter 122: Something to Protect: Hermione Granger

Chapter 97: Roles, Pt 8



For the second time that day, Harry's eyes filled with tears. Heedless of the puzzled eyes of the Ravenclaws in the common room, he reached out to the silver creature which Draco Malfoy had sent, cradling it in his arms like a live thing; and stumbled off in the direction of his dorm room, heading half-blindly for the bottom of his trunk, as the silver snake waited silently in his arms.

The fifth meeting: 10:12am, Sunday, April 19th.

The debtor's meeting which Lord Malfoy had demanded from Harry Potter, who owed Lucius Malfoy a debt of some 58,203 Galleons, was held within the Gringotts Central Bank, in accordance with the laws of Britain.

There had been some pushback from Chief Warlock Dumbledore, trying to prevent Harry Potter from leaving the security of Hogwarts (a phrase that caused Harry Potter to raise his fingers and silently make quote marks in the air). For his own part, the Boy-Who-Lived had seemingly pondered quietly, and then assented to the meeting, strangely compliant in the face of his enemy's demand.

The Headmaster of Hogwarts, who acted as Harry Potter's legal guardian in the eyes of magical Britain, had overruled his ward's assent.

The Debts Committee of the Wizengamot had overruled the Headmaster of Hogwarts.

The Chief Warlock had overruled the Debts Committee.

The Wizengamot had overruled the Chief Warlock.

And so the Boy-Who-Lived had departed under the heavy guard of Mad-Eye Moody and an Auror trio for the Gringotts Central Bank; with Moody's bright-blue eye rotating wildly in every direction, as though to signal to any possible attacker that he was On Guard and Constantly Vigilant and would cheerfully incinerate the kidneys of anyone who sneezed in the general direction of the Boy-Who-Lived.

Harry Potter watched more keenly than before, as they marched through the wide-open front doors of Gringotts, beneath the motto Fortius Quo Fidelius. On Harry's last three visits to Gringotts he had merely admired the marble pillars, the gold-burning torchlights, the architecture not quite like the human parts of magical Britain. Since then had come the Incident at Azkaban and other things; and now, on his fourth visit, Harry was thinking about the Goblin Rebellions and goblins' ongoing resentment at not being allowed to own wands and certain facts which hadn't been in the first-year History textbook, which Harry had guessed at by pattern-matching and which Professor Flitwick had confirmed in a very quiet voice. Lord Voldemort had killed goblins as well as wizards - an incredibly stupid move on Lord Voldemort's part, unless Harry was really missing something - but what goblins thought of the Boy-Who-Lived, Harry had no idea. Goblins had a reputation for paying what they owed and taking what they thought owed them, along with a reputation for interpreting those accounts in a somewhat prejudiced fashion.

Today, the guards standing upright in armor at regular intervals around the bank were staring at the Boy-Who-Lived with blank faces, and glaring at Moody and the Aurors with flashes of bitter contempt. At the stands and counters of the bank's foyer, goblin tellers stared with equal contempt at the wizards whose hands they were filling with Galleons; one teller smiled a sharp-toothed grin at a witch who was looking angry and desperate.

If I understand human nature correctly - and if I'm right that all the humanoid magical species are genetically human plus a heritable magical effect - then you're not likely to become friends with a wizard just because I'm polite to you, or say that I'm sympathetic. But I wonder if you would back the Boy-Who-Lived in a bid to overthrow the Ministry, if I promised to revoke the Wand Law afterward... or if I quietly gave you wands, and spellbooks, in exchange for your support... is that why the secret of wand-making is restricted to people like Ollivander? Though if you really are human, just plain human, then the goblin nation probably has its own internal horrors, its own Azkabans, for that is also human nature; in which case sooner or later I must overthrow or reform your own government as well. Hm.

An aged goblin appeared before them, and Harry inclined his head with careful courtesy, a gesture that the aged goblin returned with an abrupt half-nod. There was no wild train ride; instead the aged goblin ushered them into a short hallway that terminated in a small waiting room, with three goblin-sized benches and one wizard-sized chair, within which nobody sat.

"Do not sign anything that Lucius Malfoy gives you," Mad-Eye Moody said. "Nothing, do you understand me, lad? If Malfoy hands you a copy of The Wonderful Adventures of the Boy-Who-Lived and asks you for an autograph, tell him that you've sprained a finger. Don't pick up a quill for a single second while you're in Gringotts. If someone hands you a quill, break the quill and then break your own fingers. Do I need to explain further, son?"

"Not particularly," Harry said. "We also have lawyers in Muggle Britain, and they'd think your lawyers are cute."

A short time later Harry Potter handed his wand over to an armored goblin guard who frisked him with all manner of interesting-looking probes, and gave his pouch to Moody to keep.

And then Harry stepped through another door, and a brief waterfall of Thief's Downfall, which evaporated from his skin as soon as he stepped out.

On the other side of the door was a larger room, richly paneled and appointed, with a great golden table stretching across it; two huge leather chairs on one side of the table, and a small wooden stool on the other, the debtor's perch. Two goblins in full armor, wearing ornate earpieces and glasses, stood watch around the room. Neither side would have wands or any other device of magic, and the goblin guards would attack immediately if anyone dared to use wandless magic within this peaceable meeting supervised by Gringotts Bank. The ornate earpieces would prevent the goblin guards from hearing the conversation unless directly addressed, the eyepieces would leave the wizards' faces as blurs. It was, in short, something along the lines of actual security, at least if you were an Occlumens.

Harry climbed up onto his uncomfortable wooden stool, thinking Subtle in a tone of some mental sarcasm, and awaited his creditors.

It was only a brief interval later, much shorter than the time a debtor could legally be made to wait, when Lucius Malfoy entered into the room, taking up his leather chair with motions worn smooth by practice. His snake-headed cane was missing from his hands, his long white mane drifted behind him the same as ever, his face could not be read.

Quietly following behind him was a young boy with white-blonde hair, now wearing black robes far finer than any Hogwarts uniform, who followed in his father's footsteps with a controlled face. A boy who was also Harry's creditor to the tune of forty Galleons, and also of House Malfoy, and therefore, technically, covered by the Wizengamot resolution enabling this meeting.

Draco. Harry didn't say it aloud, didn't let his own expression change. He could not think of what to say. Not even I'm sorry seemed appropriate. Harry hadn't dared say any of that to Draco's Patronus either, when they had set up this meeting in a few brief exchanges; and not only because Lucius might be listening. It had been enough to know that Draco's happy thought was still happy, and that he had still been able to want Harry to know it.

Lucius Malfoy spoke first, his voice level, his face set. "I do not understand what is happening at Hogwarts, Harry Potter. Would you care to explain it to me?"

"I don't know," Harry said. "If I understood these events I would not have let them happen, Lord Malfoy."

"Then answer me this question. Who are you?"

Harry gazed evenly at the face of his creditor. "I'm not You-Know-Who, like you thought I was," Harry said. Not being a complete idiot, he'd eventually worked out who Lucius Malfoy had thought he was talking to in front of the Wizengamot. "Obviously I'm not a normal boy. Equally obviously, that probably has something to do with the Boy-Who-Lived business. But I don't know what, or why, any more than you do. I asked the Sorting Hat and it didn't know either."

Lucius Malfoy nodded distantly. "I could not think of any reason why you would pay a hundred thousand Galleons to save a mudblood's life. No reason save one, which would account for her power and bloodthirst alike; but then she died at the hands of a troll, and yet you lived. And also my son has told me much of you, Harry Potter, which did not make the tiniest bit of sense, I have heard the ravings of the mad in St. Mungo's and they were more sensible by far than the events which my son told me under Veritaserum that you enacted, and that portion of this raving lunacy, which you personally carried out, I would have you explain to me, and now."

Harry turned to look at Draco, who looked back at him with a face that was screwing up, being controlled, and then tensing up again.

"I'd also," Draco Malfoy said in a high and wavering voice, "like, to know, why, Potter."

Harry closed his eyes, and spoke without looking. "A boy raised by Muggles who thought he was clever. You saw me, Draco, and you thought of how very useful it would be if the Boy-Who-Lived, out of all the other children in your year, could be shown the truth of things, if we could be friends. And I thought the same thing about you. Only, you and I believed different things were true. Not that I'm saying that there are different truths, I mean, there's different beliefs but there's only one reality, only one universe that can make those beliefs true or false -"

"You lied to me."

Harry opened his eyes and looked at Draco. "I would prefer to say," Harry said, not quite with a steady voice, "that the things I told you were true from a certain point of view."

"A certain point of view?" Draco Malfoy looked every bit as angry as Luke Skywalker'd had the right to be, and not in a mood to accept Kenobi's excuses, either. "There's a word for things that are true from a certain point of view. They're called lies! "

"Or tricks," Harry said evenly. "Statements which are technically true but which deceive the listener into forming further beliefs which are false. I think it's worth making that distinction. What I told you was a self-fulfilling prophecy; you believed that you couldn't deceive yourself, so you didn't try. The skills you've learned are real, and it would have been very bad for you to start fighting against them internally. People can't make themselves believe that blue is green by an act of will, but they think they can, and that can be almost as bad."

"You used me," said Draco Malfoy.

"I only used you in ways that made you stronger. That's what it means to be used by a friend."

"Even I know that's not what friendship is!"

Now Lucius Malfoy spoke again. "For what purpose? To what end?" Even the elder Malfoy's voice was not quite steady. "Why?"

Harry regarded him for a moment, and then turned to Draco. "Your father's probably not going to believe this," Harry said. "But you, Draco, should be able to see that everything which has happened is compatible with this hypothesis. And that any more cynical hypothesis wouldn't explain why I didn't press you harder when you thought I had leverage, or why I taught you so much. I thought that the heir of House Malfoy, who'd been publicly seen to grab a Muggleborn girl to stop her falling off the roof of Hogwarts, would be a good compromise candidate to lead magical Britain after the reformation."

"So you would have me believe," Lucius Malfoy said in a thin voice, "that you are claiming to be mad. Well, let us leave all that aside. Tell me who set that troll on Hogwarts."

"I don't know," Harry said.

"Tell me who you suspect, Harry Potter."

"I have four suspects. One of them is Professor Snape -"

"Snape? " Draco burst out.

"The second, of course, is the Defense Professor of Hogwarts, just because he's the Defense Professor." Harry would have left him out, not wanting to bring Professor Quirrell to the Malfoys' attention if he was innocent, but Draco might have called him on that. "The third, you wouldn't believe me about. The fourth is a catchall category called Everything Else." And the fifth, Lord Voldemort, I do not think I should name to you.

Lucius Malfoy's face contorted in a snarl. "Do you think I cannot recognize bait upon your hook? Tell me about this third possibility, Potter, the one you wish me to believe is the true answer, and leave aside games."

Harry regarded Lord Malfoy steadily. "I once read a book I wasn't supposed to read, and it told me this: Communication is an event that takes place between equals. Employees lie to their bosses, who, in turn, expect to be lied to. I'm not playing coy, I'm observing that it's simply not possible, in our present situation, for me to tell you about the third suspect, and have you believe that my story was anything but a lure."

Draco spoke then. "It's Father, isn't it?"

Harry gave Draco a startled look.

Draco spoke evenly. "You suspect that Father sent the troll into Hogwarts to get at Granger, don't you? That's what you're thinking, isn't it!"

Harry opened his mouth to say, Actually, no, and then managed to think ahead and stop himself for once in his life.

"I see..." Harry said slowly. "That's what this is about. Lucius Malfoy publicly says that Hermione won't get away with what she's done, and lo and behold, a troll kills her." Harry smiled then, in a way that bared his teeth. "And if I deny that here, then Draco, who isn't an Occlumens, can then testify under Veritaserum that the Boy-Who-Lived does not suspect Lucius Malfoy of having sent a troll into Hogwarts to kill Hermione Granger, sworn to the Noble House of Potter, whose blood debt was recently purchased for a hundred thousand Galleons et cetera." Harry leaned back slightly, though his wooden stool had no back with which to do it properly. "But now that it's been pointed out, I see that it's very reasonable. Obviously you killed Hermione Granger, just like you threatened to do in front of the whole Wizengamot."

"I did not," Lucius Malfoy said, expressionless once more.

Harry bared his teeth again in that non-smile. "Well then, in that case, there must be someone else out there who killed Hermione and messed with the Hogwarts wards, the same person who earlier tried to frame Hermione for Draco Malfoy's murder. Either you killed Hermione Granger after being paid for her life, or you blamed your son's attempted murder on an innocent girl and took all my family's money under false pretenses, one of those two things must be true."

"Perhaps you killed her in hopes of your money being returned." Lucius Malfoy had leaned forward, and was staring hard at Harry.

"Then I would not have given away my money for her in the first place. As you already know. Don't insult my intelligence, Lord Malfoy - no, wait, sorry, you just had to say that in case Draco had to testify to it, never mind."

Lucius Malfoy sat back in his chair and stared.

"I tried to tell you, Father," Draco said under his breath, "but nobody can imagine Harry Potter until they've actually met him..."

Harry tapped a finger on his cheek. "So people are starting to figure out the blatantly obvious? I'm surprised, actually. I wouldn't have predicted that would happen." Harry had by now caught the general rhythm of Professor Quirrell's cynicism and was able to generate it independently. "I wouldn't think a newspaper would be able to report on a concept like 'Either X or Y must be true, but we don't know which.' I would only expect journalists to report stories consisting of series of atomic propositions, like 'X is true', 'Y is false', or 'X is true and Y is false'. Not more complex logical connectors like 'If X is true then Y is true, but we don't know whether X is true'. And all your supporters ought to be rapidly switching between 'You can't prove that Lord Malfoy killed Granger, it could've been someone else' and 'You can't prove there was someone else to frame Granger', so long as it's uncertain they should be trying to have it both ways at once... wait, don't you own the Daily Prophet?"

"The Daily Prophet," Lucius Malfoy said thinly, "which I certainly do not own, is far too respectable to publish any such scurrilous nonsense. Unfortunately, not all wizards of influence are so reasonable."

"Ah. Got it." Harry nodded.

Lucius glanced at Draco. "The rest of what he said - was any of it important?"

"No, Father, it was not."

"Thank you, son." Lucius returned his gaze to Harry. His voice, when he spoke, was something closer to his usual drawl, cool and confident. "It is possible that I could be persuaded to show you some favor, if you admitted before the Wizengamot what you clearly know, that I was not responsible for this deed. I would be willing to reduce your remaining debt to House Malfoy quite significantly, or even adjust the terms to allow later repayment."

Harry regarded Lucius Malfoy steadily. "Lucius Malfoy. You are now perfectly aware that Hermione Granger was, in fact, framed using your son as bait, that she was False-Memory-Charmed or worse, and that House Potter held nothing against you before that. My counterproposal is that you return my family's money, I announce before the Wizengamot that House Potter holds House Malfoy no animus, and we present a united front against whoever's doing this. We decide to screw the roles we're supposed to play, and ally with each other instead of fighting. It could be the one thing the enemy doesn't expect us to do."

There was a brief silence in the room, except for the two goblin guards who went on breathing regardless.

"You are mad," Lucius Malfoy said coldly.

"It's called justice, Lord Malfoy. You cannot possibly expect me to cooperate with you while you are holding the wealth of House Potter under what you now know to be false pretenses. I understand how it looked to you at the time, but you know better now."

"You have nothing to offer me worth a hundred thousand Galleons."

"Don't I?" Harry said distantly. "I wonder. I think it quite probable that you care more about the long-term welfare of House Malfoy than about whichever political issue the last generation's failed Dark Lord made his personal hobbyhorse." Harry glanced significantly at Draco. "The next generation is drawing its own battle lines and forming new alliances. Your son can be frozen out of that, or he can go straight to the top. Is that worth more to you than forty thousand Galleons you weren't particularly expecting and don't particularly need?" Harry smiled thinly. "Forty thousand Galleons. Two million Muggle pounds sterling. Your son knows some things about the size of the Muggle economy that might surprise you. They'd find it amusing, that the fate of a country was revolving around two million pounds sterling. They'd think it was cute. And I think much the same, Lord Malfoy. This isn't about me being desperate. This is about you getting a fair chance to be fair."

"Oh?" said Lord Malfoy. "And if I refuse your fair chance, what then?"

Harry shrugged. "Depends what sort of coalition government gets put together without the Malfoys. If the government can be reformed peacefully and it would disturb the peace to do otherwise, I'll pay you the money out of petty cash. Or maybe the Death Eaters will be retried for past crimes and executed as a matter of justice, as a result of due legal process, of course."

"You truly are mad," Lucius Malfoy said quietly. "You have no power, no wealth, and yet you say such things to me."

"Yes, it's silly to think I could scare you. After all, you're not a Dementor."

And Harry went on smiling. He'd looked it up, and apparently a bezoar would heal almost any poison if you shoved it into someone's mouth fast enough. Maybe that wouldn't repair radiation damage from Transfigured polonium, but then again, maybe it would. So Harry had looked up the freezing points of various acids, and it turned out that sulfuric acid would freeze at just ten degrees Celsius, which meant Harry could buy a liter of acid on the Muggle market, freeze it solid, and Transfigure it down to a tiny little unnoticable water-ice chip to be flipped into someone's mouth and ingested. No bezoar would compensate for that, once the Transfiguration wore off. Harry had no intention of saying it out loud, of course, but now that he'd failed decisively to prevent any deaths during his quest, he had no further intention of being restrained by the law or even the code of Batman.

Last chance to live, Lucius. Ethically speaking, your life was bought and paid for the day you committed your first atrocity for the Death Eaters. You're still human and your life still has intrinsic value, but you no longer have the deontological protection of an innocent. Any good person is licensed to kill you now, if they think it'll save net lives in the long run; and I will conclude as much of you, if you begin to get in my way. Whoever sent the troll after Granger must have targeted you too and hit you with some curse that makes former Death Eaters melt into a pile of goo. Very sad.

"Father," Draco said in a small voice. "I think you should consider it, father."

Lucius Malfoy looked at his son. "You jest."

"It's true. I don't think Potter just made up his books, nobody could have written all that and there were things in them that I could check for myself. And if even half of all that is true, he's right, a hundred thousand Galleons won't mean much. If we give it to him he really will be friends with House Malfoy again - the way he thinks of being friends, anyway. And if we don't, he'll be your enemy, whether it's in his own interests or not, he'll just go after you. Harry Potter really does think like that. It's not about money to him, it's about what he thinks is honor."

Harry Potter inclined his head, still smiling.

"But let's get one part of it straight," Draco said, now staring directly at him. There was a fierce light in his eyes. "You wronged me. And you owe me."

"Acknowledged," Harry said quietly. "Conditional on the rest of it, of course."

Lucius Malfoy opened his mouth to say who-knew-what and then closed it again. "Mad," he said again.

There was a long father-and-son argument during which Harry managed to keep his mouth shut.

When it seemed that even Draco wouldn't be able to persuade his father, Harry spoke up again, and proposed his intended next steps, if the Houses of Potter and Malfoy could cooperate.

Then came more argument between Lucius and Draco, during which Harry again stayed silent.

Finally Lucius Malfoy's eyes turned to gaze at Harry. "And you believe," Lucius Malfoy said, "that you can persuade Longbottom and Bones to go along with this notion, even if Dumbledore opposes it."

Harry nodded. "They'll be suspicious of your involvement, of course. But I'll tell them that it was my plan to start with, and that should help."

"I suppose," Lucius Malfoy said after a pause, "that I could have a contract drawn up, absolving you of almost all the remaining debt, if by some chance I do go along with this mad idea. It shall need more guarantees, of course -"

Harry promptly reached into his robes and drew out a parchment, unfolding it and spreading it across the golden table. "I've taken the liberty myself, actually," Harry said. He'd spent some careful hours in the Hogwarts library with the law books available. Thankfully, so far as Harry could tell, the laws of magical Britain were charmingly simple by Muggle standards. Writing that the original blood debt and payment was cancelled, the Potters' wealth and all other vault items would be returned, and the remaining debt annulled, all with no fault to the Malfoys, was only a few more lines than it took to say out loud. "I had to promise my keepers not to sign anything you gave me. So I made sure to compose this myself, and sign it before I left."

Draco emitted a choked laugh.

Lucius read through the contract, smiling humorlessly. "How charmingly straightforward."

"I also promised not to touch a quill while I was in Gringotts," Harry said. He reached into his robes again and drew out a Muggle pen, along with a sheet of normal paper. "Will this wording be all right?" Harry rapidly scribbled down a legal-sounding statement to the effect that House Potter didn't hold House Malfoy responsible in any way for Hermione Granger's murder and didn't believe they had anything to do with it, then held up the paper in the air for Lord Malfoy's inspection.

Lord Malfoy looked at the paper, rolled his eyes slightly, and said, "Good enough, I suppose. Though to have the proper meaning, you should use the legal term indemnify rather than exonerate -"

"Nice try, but no. I know exactly what that word means, Lord Malfoy." Harry took his parchment and began copying down his original wording more carefully.

When Harry was done, Lord Malfoy reached across the golden table and took the pen, looking at it thoughtfully. "One of your Muggle artefacts, I suppose? What does this do, son?"

"It writes without needing an inkwell," Draco answered.

"I can see that. I suppose some might find it an amusing trinket." Lucius smoothed the parchment contract over the table, then set his hand by the line for signatures, tapping the pen thoughtfully on the starting spot.

Harry wrenched his eyes away, up to Lucius Malfoy's face, forcing himself to breathe regularly, not quite able to stop his muscles from tensing.

"Our good friend, Severus Snape," said Lucius Malfoy, still tapping the pen on the line awaiting his signature. "The Defense Professor, calling himself Quirrell. Now I ask again, who is your third suspect, Harry Potter?"

"I would strongly advise that you sign first, Lord Malfoy, if you're going to do so anyway. You will benefit from this information more if you do not think I am trying to persuade you of something."

Another humorless smile. "I shall take my chances. Speak, if you wish this to continue."

Harry hesitated, then said evenly, "My third suspect is Albus Dumbledore."

The tapping pen stilled on the parchment. "A strange allegation," Lucius drawled. "Dumbledore lost much face when a Hogwarts student died within his tenure. Do you suppose that I will believe anything of him, only because he is my enemy?"

"He is one suspect among several, Lord Malfoy, and not necessarily the most plausible. But the reason I was able to kill a full-grown mountain troll was that I had a weapon which Dumbledore gave to me, at the start of the school year. It's not strong evidence, but it's suspicious. And if you're thinking that murdering one of his students is not Dumbledore's style, well, the same thought had occurred to me."

"It's not his style?" Draco Malfoy said.

Lucius Malfoy shook his head in a measured, careful movement. "Not quite, my son. Dumbledore is particular in his evils." Lord Malfoy leaned back into his chair, and then sat quite still. "Tell me of this weapon."

"I am not yet certain I should go into details about that in your presence, Lord Malfoy." Harry took a breath. "Let me be clear on this. I am not trying to sell you on the idea that Dumbledore is behind this, just raising the possibility -"

Then Draco Malfoy spoke. "The device Dumbledore gave you - was it something to kill trolls? I mean, just trolls? Can you tell us that?"

Lucius turned his head to look at his son with some surprise.

"No..." Harry said slowly. "It wasn't specifically a sword of anti-troll slaying, or anything like that."

Draco's eyes were intent. "Would the device have worked against an assassin?"

Not if they had shields raised. "No."

"A fight in school?"

An expanding rock in the throat is inherently lethal. "No. I don't think it was meant for use against humans."

Draco nodded. "So just magical creatures. Would it have been a good weapon against an angry Hippogriff, or something like that?"

"Does the Stunning Hex work on Hippogriffs?" Harry said slowly.

"I don't know," said Draco.

"Yes," said Lucius Malfoy.

Compared to trying to target a Wingardium Leviosa and Finite Incantatem - "Then a Stunning Hex would be a better way of dealing with a Hippogriff." Put that way, it did seem increasingly like a Transfigured rock was an optimal weapon only against a flesh-and-blood magical creature with spell-resistant skin. "But... I mean, it might not have been intended as a weapon at all, I used it in a strange way, it could have just been a crazy whim -"

"No," Lucius Malfoy said lowly. "Not a whim. Not coincidence. Not Dumbledore."

"Then it's him," Draco said. Slowly Draco's eyes narrowed, and he gave a vicious nod. "It's been him 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.

"So this is what I'd want House Malfoy to do for me, Lord Malfoy, if Dumbledore gets removed because of me. When the opposition is most frightened - that's when they'll be offered a last-minute arrangement to avoid a civil war. Some of your allies might not prefer it, but there'll be a lot of neutrals who'll be glad to see stability. The bargain will be that instead of you taking over right away, Draco Malfoy will take power when he comes of age."

"What? " Draco said.

"Draco has testified under Veritaserum that he tried to help Hermione Granger. I bet there'd be a lot of people in the opposition who'd take a chance on him rather than fight. I'm not sure how exactly you'd enforce it - Unbreakable Vows or Gringotts contracts or what - but there'll be some sort of enforceable compact about power going to Draco after he graduates Hogwarts. I'll throw any support the Boy-Who-Lived has behind that bargain. Try to persuade Longbottom and Bones and so on. Our first plan paves the way for that later, if you're careful to act honorable when you deal with Longbottom and Bones this time around."

"Father, I swear I didn't -"

Lucius's face twisted into a grim smile. "I know you didn't, son. Well." The white-haired man stared across the mighty golden table at Harry Potter. "Those terms are acceptable to me. But fail in any part of our agreement, whether our first bargain, or the second, and there shall be consequences for you, Harry Potter. Clever words will not halt that."

And Lucius Malfoy signed the parchment.

Mad-Eye Moody had been staring at the bronze door of the Gringotts meeting room for what seemed like hours, insofar as a man could stare at any one thing when his gaze always saw in all directions.

The trouble with trying to be suspicious of a man like Lucius Malfoy, Moody thought, was that you could spend an entire day thinking of everything he might be up to, and still not have finished.

The door cracked open and Harry Potter trudged out, small beads of sweat still on his forehead.

"Did you sign anything?" Mad-Eye demanded upon the instant.

Harry Potter looked at him silently, then reached into his robes and drew out a folded parchment. "The goblins are already executing this," said Harry Potter. "They made three copies before I left."

"MERLIN DAMN IT SON -" Moody paused as his Eye caught sight of the second half of the document as Harry Potter slowly, as though reluctantly, began to unfold the top upward. A glance sufficed to take in the paragraphs drawn in careful handwriting, Lucius Malfoy's elegant signature below Harry Potter's. And then Moody exploded, even as the top half of the document also began to enter his Sight. "You exonerate House Malfoy of any involvement in Hermione Granger's death? Do you have any idea what you've done, you little fool? Why in Merlin's name would you do something like WHAT -"