Chapter Summaries

Harry secretly arranged to help Draco deliver Lucius Malfoy’s sealed letter to Snape, while also organizing his friends’ efforts to investigate the Hogwarts Board of Governors. After Snape taunted Harry about Vaughn’s Wolfsbane Potion in class, Harry and Draco set out together that night, and Draco explained how much Vaughn meant to Slytherin.

• Harry met Draco in the fourth-floor corridor, agreed to take him to the Board of Governors’ meeting place that night, and learned that Draco had a sealed letter from Lucius for Snape.
• Harry divided his friends over who would stay behind to work on their essays, then persuaded Ron, Seamus, Dean, and Neville to remain while he investigated alone.
• Snape quizzed Harry about Vaughn’s Wolfsbane Potion, mocked him, and assigned the class a seven-foot essay on the potion’s ingredients and their toxicity.
• Draco followed Snape after class and returned with a nod for Harry, while Hermione avoided Harry and left without speaking to him.
• Harry met Draco outside the dungeons under the Invisibility Cloak, and Draco said Slytherins treasured Vaughn’s carved “Sea View Room” sign because Vaughn represented hope to many of them.

Harry and Draco followed Fruit Tea into the Hogwarts governors’ meeting, where the vote again ended in a tie. Afterward, they watched Lucius Malfoy behave cautiously and waited for him to leave, then asked Fruit Tea to help them track him.

• Harry and Draco entered the governors’ meeting under the Invisibility Cloak with Fruit Tea’s help, and Draco observed the attendees as the debate resumed.
• The governors’ vote ended in a 4:4:4 tie, and Alecto Carrow berated the Ministry representatives and other abstaining members before the meeting adjourned.
• Harry and Draco hid as Lucius Malfoy and Snape left, then waited while Lucius remained behind and later checked the room again for anyone watching him.
• Harry asked Fruit Tea to help them catch up with Lucius, and she summoned cats, birds, and other castle animals to search for him.
• A raven returned and appeared to communicate silently with Fruit Tea, who then led Harry and Draco onward.

Harry and Draco followed Lucius Malfoy to a secret meeting with Snape in an underwater corridor, where a mysterious wizard named DeSantis appeared and Snape's magic shattered the passage. The boys escaped and argued over whether they could report Lucius, but Draco pointed out they had no evidence and Lucius could legally invite guests to Hogwarts.

• Harry and Draco followed Lucius through Hogwarts while Fruit Tea countered his detection spells with potion.
• Lucius met Snape in an underwater corridor and revealed that a mysterious mark had suddenly activated; Snape angrily rejected the idea that its owner had returned.
• A hidden voice appeared, and Snape attacked the darkness, shattering the corridor while a magical barrier held back the lake water.
• Snape recognized that Harry and Draco were nearby and used the attack to cover their escape; the stranger introduced himself as the North American legendary wizard DeSantis.
• Harry and Draco fled to the Slytherin common room, where Harry accused Lucius of plotting with an outsider and Draco argued that they had no evidence to report.

Harry and Draco tried to work out how to investigate Lucius Malfoy and the unfamiliar wizard, while Snape agreed to serve Voldemort under DeSantis’s demands. Fruit Tea’s recovered memories revealed the meeting to Vaughn, who learned that DeSantis was cooperating with Voldemort and decided to summon Dumbledore back.

• Harry and Draco realized they could not report the damaged bridge and discussed investigating the wizard Lucius had brought, then noticed Fruit Tea was missing.
• Fruit Tea, invisible in the maze, overheard DeSantis question Snape and Lucius, who revealed Voldemort wanted to cooperate with DeSantis to achieve resurrection.
• DeSantis told Snape that Lucius was bound by an Unbreakable Vow and offered Snape the choice to serve Voldemort under the same arrangement; Snape accepted.
• Fruit Tea woke in Vaughn’s room and accidentally encountered his dangerous experiment, but Vaughn protected her and recovered her memories through Personality Armament.
• Vaughn saw Fruit Tea’s memories of the meeting and learned that DeSantis was working with Voldemort, so he decided to summon Dumbledore back.
• Harry woke the next morning to find heavy snow falling outside Hogwarts.

Harry worried about Snape after witnessing his powerful magic, but found Snape unharmed when he was summoned to the dungeon office. There, Harry discovered Vaughn with Snape, and Vaughn began a casual tea gathering before explaining why Harry counted as a witness.

• Harry concealed his anxiety about Snape from Ron and his other friends, though Ron noticed that he looked troubled.
• Snape confronted Harry at the Great Hall entrance and ordered him to come to his office after breakfast.
• Ron urged Harry to tell Professor McGonagall what he had seen, but Harry went to Snape's office instead.
• Vaughn greeted Harry from inside Snape's office and told Snape to let him in because he had witnessed the events of the previous night.
• Harry entered the unusually tidy office, where Vaughn invited him to warm himself and share tea with Snape.

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.