Recaps

Vaughn and Snape cautiously exchanged information while an Unbreakable Vow prevented Snape from speaking openly, and Harry learned that Snape would not hide the truth from him when he was present. Vaughn refused to explain Snape’s reasons for treating Harry as he did, leaving Harry to consider whether Snape’s hostility concealed shame before Ron emerged from hiding in the dungeon corridor.

• Snape and Vaughn used tea, newspapers, and a diary to exchange clues about Snape’s magical restrictions, while Vaughn silenced Harry when he realized what the diary meant.
• After their conversation ended, Vaughn lifted the Silencing Charm and explained that Lucius’s unfamiliar wizard had forced Snape to make an Unbreakable Vow, which Snape and Vaughn had partly worked around using Occlumency.
• Vaughn told Harry that Snape would never hurt him and that Harry’s presence had made Snape more willing to be honest, but he said Snape would have to explain their personal history himself.
• Harry reasoned that Snape’s treatment of him might be about more than James’s bullying, and Vaughn urged him to speak honestly with Snape while Harry resisted pursuing the thought.
• Vaughn spotted Ron hiding behind a statue, asked how Ginny was doing, and left after Ron said she had made friends and was enjoying her House; Ron then vowed to stay in Gryffindor Tower for the day.

Vaughn and Dumbledore discussed why Voldemort had sought the diary and used a Pensieve memory to discover that it absorbed Harry’s life force. They suspected Voldemort wanted the diary to create another version of himself, possibly to collect Horcruxes, and ended by considering which Horcrux would be easiest to obtain.

• Harry avoided telling Ron what had happened in Snape’s office, while Vaughn went to meet Dumbledore.
• Vaughn accused Dumbledore of testing Snape’s loyalty and defended Harry’s ability to keep their encounter from Voldemort.
• Vaughn and Dumbledore questioned whether DeSantis was helping Voldemort collect Horcruxes, since Voldemort would not trust another wizard with them.
• Vaughn showed Dumbledore a Pensieve memory of Harry writing in the diary and draining his life force.
• Vaughn and Dumbledore concluded that the young Voldemort may have intended the diary to create another version of himself, and considered whether that version might gather the Horcruxes.

Vaughn told Dumbledore how Harry might help locate Ravenclaw's Diadem, then negotiated with Phineas Black for access to the Black ancestral home. Kreacher arrived to escort Vaughn inside, where the Black family’s secrets—including the truth about Regulus—remained ahead.

• Vaughn told Dumbledore the diadem was hidden in the Room of Requirement and suggested using Harry’s connection to Voldemort to find it.
• Vaughn demanded access to the Black ancestral home in exchange for helping Phineas Black rescue Sirius, and Phineas reluctantly agreed.
• Vaughn followed Phineas’s directions to the hidden Number Twelve and saw the powerful spells concealing the Black home.
• Phineas said he could not break the spells himself and called for Kreacher to bring Vaughn inside.
• Kreacher initially called Vaughn a traitorous Weasley, then accepted him after hearing that he was a Slytherin like Regulus.

Vaughn followed Kreacher into the Black ancestral home and took the locket Regulus had hidden, then persuaded Kreacher to trade it for a promise to bring Regulus back. The two Apparated to the seaside cave where Regulus had died, leaving Vaughn poised to search for him.

• Kreacher brought Vaughn into the Black ancestral home, where Vaughn met Phineas Black and heard Walburga Black argue with him in their portraits.
• Vaughn asked Kreacher about the locket Regulus had entrusted to him, and Kreacher panicked and Apparated to his bedroom beneath the house.
• Vaughn followed through a Dimensional Gate, petrified Kreacher, and took the locket, then described Regulus's sacrifice and the cave to him.
• Kreacher blamed himself for Regulus's death and agreed to give Vaughn the locket in exchange for Vaughn bringing Regulus back.
• Vaughn and Kreacher used Side-Along Apparition to reach the cave where Regulus had died.

Vaughn and Kreacher returned to the Irish cave where Voldemort had hidden Regulus's body, and Vaughn examined the powerful magic that concealed and shaped it. They entered the cavern, where Vaughn began testing its darkness, while Kreacher stayed beside him despite his fear.

• Kreacher identified the southwestern Irish coast as the location of Voldemort's cave and led Vaughn to its submerged entrance.
• Vaughn and Kreacher swam through the passage to the antechamber, where Vaughn determined that Voldemort had hidden the door by weaving magic into the surrounding cliff and sea.
• Vaughn cut Kreacher's arm and smeared blood on the wall, causing the glowing door to appear.
• They passed through the door into a vast cavern shaped by Voldemort's magic, with a dark lake and a faintly glowing island at its center.
• Vaughn discovered that the cavern's darkness swallowed some magic but was pushed back by Lumos, then began testing it with different spells as Kreacher watched fearfully.

Vaughn explored Voldemort’s cavern defenses with Kreacher, using his magic to uncover the hidden boat and infer that the traps reflected Voldemort’s fears and disdain for others. They reached the island where Voldemort had hidden the locket, and Vaughn began examining the enchanted basin of potion.

• Vaughn stopped probing the darkness and told Kreacher that Voldemort’s magic revealed his weaknesses, including fear and his belief that house-elves did not count as people.
• Vaughn discovered the hidden chain and boat, then crossed the lake with Kreacher while explaining how Voldemort’s protections exposed his assumptions and fears.
• Kreacher recognized an Inferius in the lake and mourned Master Regulus, while Vaughn studied the magic and suspected the lake transformed the dead into Inferi.
• Vaughn ordered his automatic quill to record a high-priority plan for a new magical research spell and to organize the spells and ancient magic he knew.
• Vaughn and Kreacher reached the island, where Kreacher described Regulus’s death and the potion Voldemort had forced him to drink.
• Vaughn tested the basin’s enchantment and found that spilled potion vanished as the liquid inside replenished itself.

Vaughn disrupted Voldemort’s cavern enchantment, allowing Kreacher to summon Regulus’s remains and bring them home. Kreacher then reached Sirius through a dreamlike connection, revealing Regulus’s sacrifice and leaving Sirius shaken as he began to accept the truth.

• Vaughn recognized that the cavern’s magic enforced a closed system of rules and warped space to undermine its foundation.
• Vaughn told Kreacher to summon Regulus when the cavern’s protections failed and Inferi surged from the lake.
• Kreacher called Regulus, and Sirius awoke in Azkaban from a vivid dream in which Kreacher had spoken to him.
• Kreacher told Sirius that Vaughn had recovered Regulus’s body, reported his death, and confirmed Sirius’s inheritance of the Black family estate.
• Sirius remembered Kreacher’s account of Regulus sacrificing himself to thwart Voldemort and began to believe his brother had been a hero.

Vaughn hosted Barty Crouch Sr. at the Black family home to investigate Voldemort’s sea-cave magic and study ancient potion knowledge. Crouch saw Vaughn’s growing influence as a possible new source of leadership for the weakened pure-blood families.

• Sirius learned from Bellatrix that she believed Regulus deserved his death, then provoked the Dementors into attacking the prisoners in Azkaban.
• Crouch visited the newly revealed Black family home, where Kreacher explained that Vaughn had saved Regulus and earned the right to be called Master.
• Phineas Black’s portrait fought with Walburga over Vaughn’s place in the Black family, while Crouch heard how Regulus’s disappearance had been mishandled.
• Vaughn showed Crouch the ancient spellbook Witch Poisons and asked him to help investigate the magic in Voldemort’s sea cave.
• Crouch considered how the pure-blood families had been weakened by repeated political failures and saw Vaughn’s growing strength as a possible basis for new leadership.

Barty Crouch Sr. joined Vaughn’s team to investigate Voldemort’s sea-cave magic, where he was paired with Donald Graves and Remus Lupin. As the research group began work, Crouch and Graves clashed over their competing theories, while Lupin struggled with the workload and reflected on Regulus’s past.

• Vaughn brought Barty Crouch Sr. through the sea cave’s submerged entrance and introduced him to Remus Lupin and Donald Graves.
• Vaughn assigned Crouch and Donald to research the ritual together, and Lupin questioned Vaughn about whether Regulus had truly been a hero.
• Lupin recalled Regulus’s painful last meeting with Sirius and then joined the research group’s demanding work.
• Donald explained shamanism’s belief that nature’s spirits could be awakened, prompting Vaughn to ask him to record everything he knew.
• Crouch and Donald disagreed over whether Voldemort’s cave magic depended on a hidden ritual, while Lupin tried to assess their competing claims.
• Lupin visited the guarded research tent, where James Brown offered him coffee that Donald had brought for the werewolf wizards.

Lupin arrived at Vaughn’s cave on Christmas Eve hoping to ask for leave, but found Vaughn, Crouch, and Donald Graves absorbed in studying the Stone Basin Potion. After their experiment exhausted the researchers, Donald explained how potions worked and why potionmaking traditions differed.

• James reminded Lupin that Christmas was the next day, prompting Lupin to hurry into the cave to ask Vaughn for leave.
• Lupin passed through the cave’s miniature Thief’s Downfall and warped spaces, then learned from Kettleburn that Vaughn was busy with Crouch and Percival Graves.
• Lupin watched the group analyze the Stone Basin Potion and learned that its methods combined ancient alchemy with several other potionmaking traditions.
• Vaughn’s experiment left the Grindylow severely distressed, while Crouch and Donald became overwhelmed by the information and vomited at the lake’s edge.
• Donald explained that potions worked through biologically active compounds and that different potion schools specialized in synthesizing different categories of compounds.

Vaughn explained to Lupin why Fudge and the Daily Prophet could claim credit for the potion exchange without losing public support, then brought him to the Ministry for a Wizengamot inquiry connected to Hogwarts. Lupin expected to help advance the Werewolf Class, but the chapter ended when Tonks entered Vaughn’s office and recognized him.

• Graves praised Vaughn’s research as a way to bridge divisions between potion-making schools, leaving Lupin to reconsider how magic and science related to potion-making.
• Vaughn told Lupin that the Ministry and Hogwarts had authorized an exchange delegation from the Central Academy of Qi Refining, while the Daily Prophet portrayed Fudge as the architect of the agreement.
• Lupin objected to Fudge taking credit, but Vaughn explained that readers preferred political sides and emotional anchors to truth, and that he would still lead the potion exchange.
• Vaughn brought Lupin through the Dimensional Gate to his Ministry office, where he explained that Fudge’s political weakness and petty favors could be useful.
• Lupin assumed the Wizengamot inquiry concerned his efforts to get the Werewolf Class into Hogwarts and said werewolves would not abandon that hope.
• Vaughn sent for someone with a paper airplane, and Tonks entered the office, freezing when she saw Lupin.

Vaughn sent Tonks and Lupin to inspect werewolf settlements, bringing them together while Amelia questioned his motives and challenged his political strategy. As the Wizengamot hearing approached, Vaughn hinted that pure-bloods might be planning to make trouble for him, leaving Amelia shaken and uncertain.

• Vaughn assigned Tonks to inspect werewolf settlements with Lupin as her guide, and Tonks eagerly set off with him.
• Amelia told Vaughn she found his apparent certainty about Lupin and Tonks strange, then criticized his concessions to Fudge and their growing loss of control over events.
• Amelia said she wanted power in the Ministry and asked Vaughn to respect her political position, but he stayed silent.
• As the hearing neared, Amelia left to maintain order and told Vaughn to join her quickly so others would not suspect a rift between them.
• Vaughn asked how many people would oppose him at the hearing and suggested Amelia had overlooked recent pure-blood activity.
• Amelia left the department in a daze, unsettled amid the Ministry's Christmas celebrations.

Harry spent Christmas at Hogwarts amid growing interest in China and its magical traditions, while students anticipated an Eastern-themed celebration. At lunch, Hermione and Ginny revealed that negotiations for Vaughn’s Potions exchange plan had succeeded and that the Central Academy of Qi Refining would send a delegation to Hogwarts.

• Ron explained that he had stayed at Hogwarts and asked Percy to buy him sweets in Hogsmeade.
• Harry recalled professors’ lessons about China’s size, magical traditions, creatures, and potions, which had sparked an Eastern craze at Hogwarts.
• Harry and the other boys saw students arguing over a news release that credited Minister Fudge with achievements and had pushed Dumbledore aside in photographs.
• Ginny told Harry and Ron that the Central Academy of Qi Refining had completed negotiations with the Ministry of Magic and would soon send an exchange delegation to Hogwarts.

Harry, Ron, and Hermione learned that the international potions exchange could bring rival magical schools to Hogwarts, while Harry reflected on the burdens Vaughn faced. At Ravenclaw Tower, Vaughn spent Christmas Eve alone until Cho Chang joined him and spoke of the resentment she felt toward Mahoutokoro.

• Hermione explained that several major magical schools were preparing to join Vaughn’s potions exchange, and the students discussed the schools’ rivalries and politics.
• Hermione learned from Cho Chang that the Central Academy of Qi Refining and Mahoutokoro had a long history of conflict, leaving Harry and the others worried about the schools meeting at Hogwarts.
• Harry, Ron, and Hermione walked through the snow to spend Christmas Eve with Hagrid, and Harry wondered where Vaughn was spending the holiday.
• Vaughn stayed in Ravenclaw Tower instead of attending the Great Hall’s festivities, and Cho Chang joined him by the window.
• Cho told Vaughn that he was the only person who understood her deep-rooted hatred, and Vaughn joked that he might have been Chinese in a past life.

Cho Chang warned Vaughn that his Potions exchange event could not avoid conflicts between schools, but Vaughn insisted he would expel anyone who caused trouble. Dumbledore suspected Vaughn was pursuing a connection with China, while Master Li pressed Dumbledore to repair his relationship with Vaughn and revealed that Laojun Mountain’s Perfected Lords were making cloud carriages for the visiting students.

• Cho Chang told Vaughn that her father doubted the exchange event could overcome the rivalries between the Central Academy of Qi Refining and Mahoutokoro, but Vaughn said he would keep politics out and expel anyone who disrupted it.
• Vaughn told Dumbledore that the event would focus only on Potions, then said he might restart the Triwizard Tournament after it went smoothly.
• Dumbledore suspected that Vaughn was using the event to make contact with China and might seek its help in abolishing the International Statute of Secrecy.
• After Vaughn left, Master Li confronted Dumbledore over his lack of progress in repairing his relationship with Vaughn and stressed that Vaughn was important to England’s stability.
• Master Li told Dumbledore that Laojun Mountain’s Perfected Lords were catching clouds and weaving them into carriages for the academy’s exchange students.

Dumbledore followed Master Li to watch Chinese cultivators capture clouds and weave them into a carriage. He witnessed a True Lord awaken Laojun Mountain’s dragon vein with the Loong-Calling Bell, causing the mountains to shake and clouds to surge from a peak as dawn broke.

• Dumbledore showed Master Li his modified Bubble-Head Charm, and Master Li learned that Vaughn had invented it.
• Master Li led Dumbledore through the storm to watch a qi cultivator shake the Loong-Calling Bell and awaken Laojun Mountain’s dragon vein.
• Master Li explained that a loong’s awakening summoned clouds, while Dumbledore watched the surrounding mountain ridges shudder.
• The True Lord rang the bell again, and vapor poured from a distant peak, spreading clouds across the mountains in the red dawn.
• Master Li pointed out the clouds they would capture to make a carriage.

Dumbledore wrote Vaughn a detailed account of the qi cultivators and the earth-vein Loong he had witnessed in China, while Vaughn spent the Christmas break at Hogwarts. The chapter ended with Fawkes bringing Dumbledore’s letter to Vaughn near Hagrid’s Hut as Harry and Ron sat nearby.

• Dumbledore described how cultivators awakened the earth-vein Loong and used its clouds, then wrote Vaughn about the power he had seen in China.
• Little Li allowed Dumbledore to send the letter to Vaughn without inspecting it.
• Vaughn spent the break walking by the Black Lake, reading in Ravenclaw’s hidden library, and visiting the gazebo he had built with Hagrid.
• The twins failed to wake the giant squid and lost Ron’s money after their prank-toy business failed, leaving Ron embarrassed about not having gifts to return.
• Harry tried to persuade Ron to sell his presents, but Ron refused to part with them.
• Fawkes arrived carrying Dumbledore’s thick letter as Harry and Ron watched from near Hagrid’s Hut.

Harry and Ron visited Vaughn after seeing Fawkes arrive with a letter from Dumbledore, whose warnings described China’s magical capabilities and the danger of controlling real storm clouds. Vaughn reflected on Dumbledore’s fears about the changing wizarding world, then teased Ron over his missing Christmas return gift as Harry tried to ask when Dumbledore would return.

• Harry and Ron saw Fawkes carrying a letter and decided to visit Vaughn, where Fruit Tea caught the phoenix’s drool and plucked his feathers.
• Hermione read Dumbledore’s letter about China’s shortages and magical development, while Vaughn explained the catastrophic possibilities of capturing rain and thunderstorm clouds.
• Vaughn read Dumbledore’s concerns that China’s cloud magic could be dangerous and that its growing ties with Vaughn might threaten the existing wizarding order.
• Harry asked when Dumbledore would return because he had questions only Dumbledore could answer, while Ron tried to keep Vaughn from offering help.
• Vaughn and Fruit Tea embarrassed Ron about failing to send Vaughn a Christmas return gift, and Ron swore to repay him tenfold next year.

Vaughn planned to begin developing the Universal Functional Group using Fluxweed, and invited Hermione to assist under strict limits. Hermione eagerly accepted and prepared to join him the next morning, while Vaughn’s experiment was set to begin.

• Ron admitted to Harry that Vaughn had provoked him into promising to give him Ireland team signed gear ten times over.
• Hermione realized Vaughn was teasing Ron out of affection, then learned that Vaughn intended to start his experiment the next day.
• Vaughn explained that he planned to develop the Universal Functional Group before the visiting exchange delegations arrived and hinted that Fluxweed was central to his idea.
• Hermione connected Vaughn’s research to Fluxweed, and Vaughn invited her to assist by observing, thinking, and doing little.
• Hermione spent the night excitedly preparing to join Vaughn’s research and woke before dawn to head to the Great Hall, where she got two breakfasts.

Hermione joined Vaughn’s research and learned that his universal functional group concept relied on proactive microscopic tools rather than changing substances themselves. Vaughn demonstrated his Multispectral Vision Charm and began a frightening experiment on Araclaid, leaving Hermione in absolute darkness with the Acromantula’s cries and strange bodily sounds around her.

• Hermione brought breakfast to Vaughn’s laboratory and found Araclaid weak and terrified in a jar, while Vaughn said the Acromantula had volunteered for the research.
• Vaughn explained that his universal functional group would use tools resembling nanobots to interact with cells, and Hermione studied his dense notebook until she understood the proposal.
• Vaughn activated a magical ritual and used his Multispectral Vision Charm, guiding Hermione as she learned to interpret the world through ripples of light.
• Vaughn floated Araclaid into the air and cast a maximized Light-Extinguishing Charm, plunging the laboratory into absolute darkness as Hermione heard the Acromantula scream.

Vaughn showed Hermione how he used the Multispectral Vision Charm to observe Araclaid’s cells and identify magical channel proteins that transported magic into them. He then taught her how protein folding could create countless possible structures and functions, leaving the mechanism of magical protein synthesis unresolved.

• Vaughn used a turning polyhedron and intense light to expose Araclaid’s anatomy, while Hermione observed his cells through the Multispectral Vision Charm.
• Vaughn guided Hermione closer to the cell membrane, where she watched channel proteins transport nutrients and spotted a dark, moving channel.
• Vaughn identified the dark channel as a magical channel protein that carried fundamental factors of magic into magical creatures’ cells.
• Vaughn explained that magical proteins came in several kinds and that merely transporting them would not explain how magic was synthesized.
• Vaughn sent Hermione a memory of an unfolded protein and taught her about amino acid units, side chains, and protein folding.
• Vaughn explained that a protein with thirty amino acid units could fold into roughly ten to the thirtieth power possible conformations, each potentially producing a different function.

Vaughn explained to Hermione how magic could help him investigate and engineer magical proteins, and she eagerly followed his reasoning. At breakfast, Harry and Ron learned from Neville that Hermione had become Vaughn’s research assistant, while Neville declared that he intended to study Potions and join Vaughn’s exchange activities.

• Vaughn taught Hermione how Felix Felicis, Fluxweed, and Transfiguration could help him study magical channel proteins and develop his design.
• Hermione enthusiastically recorded Vaughn’s ideas, and he saw her as a fellow traveler who might help his research and future team.
• At breakfast, Ron pointed out Hermione’s pile of Muggle molecular biology books, and Harry admitted he did not recognize the terms she was studying.
• Neville told Harry and Ron that Hermione’s reading and work were described in the latest issue of Extraordinary Potions, where she was credited as Vaughn’s research assistant.
• Neville revealed that he had subscribed to the journal and planned to study Potions for Vaughn’s exchange activities, prompting Ron to mock his ambition.

Harry and Ron read Damocles Belby’s commentary on Vaughn Weasley’s research into a universal potion solvent and began to understand how it could transform potion-making. They left impressed by the possibility of simpler potion-brewing and continued reading about Vaughn’s research.

• Neville angrily defended Vaughn’s research and left Harry and Ron after criticizing them for mocking him.
• Harry admitted that he and Ron had been at fault and suggested they apologize to Neville, while Ron refused.
• Harry and Ron struggled to understand Vaughn’s technical paper, then turned to Hermione’s overview and Damocles Belby’s commentary.
• Belby explained that Vaughn’s proposed protein-based universal carrier could simplify potion-making and help reveal how magic could be replenished.
• Harry and Ron recognized how much easier potions could become, and Ron said he believed Vaughn would succeed.
• Harry and Ron continued reading as they realized Belby was already familiar with Vaughn’s theories and experiments.

Harry and Ron worried that potion-makers’ opposition to Vaughn’s Universal Radical could drive a wedge between Vaughn and Snape, and they searched Hogwarts for Snape. They found no sign of him until Snape appeared in Vaughn’s laboratory, where he challenged the claims about the Protein Robot after witnessing its effects.

• Harry and Ron read Damocles Belby’s article on the Universal Radical and discussed the potion-makers who opposed Vaughn.
• Ron suggested that Snape might resent Vaughn’s plan to transform Potions, and Harry decided they should watch Snape and warn Vaughn if necessary.
• Harry and Ron searched Hogwarts for Snape and Vaughn’s laboratory, then apologized to Neville at lunch.
• In Vaughn’s laboratory, Snape watched Vaughn and Hermione demonstrate how the Protein Robot delivered a fluorescent potion into an Acromantula’s cells.
• Snape questioned Vaughn’s account because he had seen only black silhouettes transporting the fluorescent markers, and Vaughn explained that the Protein Robot’s structure remained a black box.

Vaughn explained how the Universal Functional Group’s Protein Robots could spread through misfolding, prompting Snape to realize the system might let Muggles use potions. Snape challenged Vaughn’s motives, and Vaughn ended by saying he judged people and creatures by their usefulness and ability to realize his ideas, not by their origins.

• Vaughn and Hermione explained that Protein Robots could replicate their conformation through misfolding, while Snape acknowledged the ingenuity of the mechanism.
• Snape warned that the Protein Robots could make magical potions usable by Muggles, and Hermione recognized the likely consequence.
• Snape accused Vaughn of deliberately pursuing a way to bridge the divide between Muggles and wizards, citing Vaughn’s earlier questions about the nature of magical life.
• Vaughn admitted that Dumbledore understood his intentions, leaving Snape to reconsider why Dumbledore feared him.
• Vaughn summoned Araclaid and told Snape that he judged Muggles, blood-status groups, wizards, and magical creatures by their usefulness to his plans.