Chapter Summaries

Harry arranged to take Draco Malfoy to the Board of Governors’ meeting location so Draco could deliver a sealed letter from Lucius to Snape, while tensions with Hermione and his friends continued. At the dungeon entrance, Draco explained that even Vaughn’s casual graffiti was cherished in Slytherin because Vaughn represented hope to many students.

• Harry met Draco Malfoy, who said Lucius had sent him a sealed letter for Snape and insisted Harry take him to the Board of Governors’ meeting location that night.
• Harry returned to Gryffindor Tower and split Ron, Seamus, Dean, and Neville over who would stay behind to work on their essays, then persuaded all four to stay while he scouted alone.
• In Potions class, Snape mocked Harry over his ignorance of Vaughn’s Wolfsbane Potion, then explained that Vaughn had used eight Wolfsbane ingredients and assigned a seven-foot essay about the recipe.
• Draco followed Snape after class, then exchanged a nod with Harry; Hermione saw them but left without speaking to Harry.
• That night, Harry met Draco outside the dungeons beneath Vaughn’s “Sea View Room” graffiti, and Draco said Slytherins preserved it because Vaughn was their hope.

Harry and Draco followed Guoguo Tea into the Board of Governors’ meeting, where the vote on the practical class and club ended in another tie. After Lucius Malfoy slipped away from the meeting room and checked whether anyone was watching him, Guoguo Tea recruited the castle animals to help Harry and Draco follow him.

• Harry and Draco entered the meeting room under the Invisibility Cloak while Guoguo Tea distracted the people inside.
• Draco watched the governors argue, and the vote again ended in a 4:4:4 tie.
• After the meeting, Lucius Malfoy waited alone, left the room, then returned to check whether anyone had been watching him.
• Harry asked Guoguo Tea to help them catch up with Lucius, and she gathered cats, birds, and other animals to search the castle.
• A raven returned with information, and Guoguo Tea led Harry and Draco onward while they wondered how the animals communicated.

Harry and Draco followed Lucius Malfoy into the Hogwarts dungeons, where they overheard his secret meeting with Snape and a hidden wizard named DeSantis. After fleeing the ensuing magical attack, they argued over whether Lucius was plotting with the outsider and concluded they lacked evidence to report him safely.

• Harry and Draco followed Lucius through Hogwarts while Guoguo Tea used potions to foil his detection spells.
• Lucius met Snape in an underwater corridor and revealed that a mark had suddenly activated, prompting Snape to accuse him of madness.
• A hidden voice appeared, and Snape unleashed a gale that shattered the corridor while Harry and Draco escaped under the Invisibility Cloak.
• The stranger identified himself as DeSantis, a Legendary Wizard from North America, and Snape recognized the name.
• Harry accused Draco's father of conspiring with an outsider, but Draco argued that they had no proof and could not safely report what they had witnessed.

Harry and Draco discovered that Guoguo Tea had remained behind in the maze, where she witnessed DeSantis offering Snape a choice between serving Voldemort and joining the North American alliance. Snape chose to serve his master, and after recovering Guoguo Tea’s memories, Vaughn learned of the alliance and decided to summon Dumbledore back.

• Draco proposed investigating the strange wizard brought by his father, and he and Harry realized Guoguo Tea was missing.
• Invisible in the maze, Guoguo Tea overheard DeSantis explain that Voldemort wanted to cooperate with him to return to life and demanded that Snape accept an Unbreakable Vow.
• Snape extended his hand and declared that he chose to serve his master.
• Guoguo Tea returned to Vaughn, who examined her memories and learned that DeSantis had joined forces with Voldemort.
• Vaughn considered how the changed events affected his plans and decided to summon Dumbledore back.

Harry worried about Snape after seeing him use powerful magic the previous night, but Snape summoned him to the dungeon office, where Harry found Vaughn waiting. The chapter ended with Vaughn and Snape calmly sharing tea and pastries while Harry tried to understand what had happened.

• Harry concealed his unease from Ron and the others, though he told Ron that he had seen Snape cast powerful magic the night before.
• Snape appeared outside the Great Hall and ordered Harry to come to his office after breakfast.
• Ron warned Harry to avoid Snape and tell Professor McGonagall, but Harry went to the dungeons anyway.
• Snape opened his office door, and Vaughn greeted Harry from inside and said Harry counted as a witness to the previous night's events.
• Harry entered Snape's unusually tidy office and watched Vaughn prepare tea and pastries while Snape joined him.

Vaughn and Snape used a roundabout conversation to discuss the restrictions imposed on Snape by an Unbreakable Vow, while Harry began to understand that Snape was on his side and would not hurt him. Vaughn refused to explain Snape’s reasons, leaving Harry with unresolved questions before Ron emerged from hiding in the corridor.

• Snape and Vaughn discussed tea before Vaughn used a Chocolate Frog card, newspapers, and an ordinary Diary to test what Snape could communicate under the Unbreakable Vow; Vaughn silenced Harry when he recognized the Diary.
• Snape confirmed that Vaughn’s indirect questions had satisfied him, and Vaughn explained that Snape’s contract restricted what he could say and that they had used Occlumency to communicate indirectly.
• Vaughn told Harry that Snape would not hurt him, but said the private details behind Snape’s behavior were for Snape to explain himself; Harry questioned whether Snape’s hostility toward him had a deeper cause.
• Harry asked Vaughn about Snape’s past with his parents, but Vaughn declined to interfere and urged Harry to speak frankly with Snape if he wanted answers.
• Vaughn spotted Ron hiding behind a statue, asked after Ginny, and left; Ron admitted he planned to stay in Gryffindor Tower for the rest of the day.

Vaughn and Dumbledore investigated why Voldemort had sought the Diary and realized its young soul fragment could absorb life force and act independently. They suspected Voldemort wanted the Diary to gather other Horcruxes, and Dumbledore asked Vaughn which one would be easiest to obtain.

• Harry withheld what he had seen in the Potions Office from Ron and returned to Gryffindor Tower with him.
• Vaughn met Dumbledore in the Headmaster's Office, and they discussed Snape, Harry, and the North American DeSantis wizard.
• Vaughn argued that Voldemort would not trust DeSantis with his Horcruxes, so DeSantis was unlikely to be collecting them for him.
• Vaughn and Dumbledore used the Pensieve to watch Harry writing in the Diary and saw it draining Harry's life force.
• Dumbledore concluded that the sixteen-year-old Tom had meant to create another version of himself, possibly as a helper for his Chamber of Secrets plan.
• Vaughn proposed that Voldemort might now use the Diary fragment to collect the other Horcruxes, and Dumbledore asked which one would be easiest to obtain.

Vaughn told Dumbledore that Harry could help locate Ravenclaw's Diadem, then negotiated with Phineas Black for access to the Black Ancestral Home in exchange for rescuing Sirius. At the hidden entrance, Kreacher arrived to escort Vaughn inside, though he remained wary of him.

• Vaughn told Dumbledore that Harry might sense Ravenclaw's Diadem through his connection to Voldemort, and Dumbledore planned to take Harry to the Room of Requirement.
• Vaughn visited Phineas Black and demanded access to the Black Ancestral Home as payment for helping rescue Sirius.
• Phineas Black agreed to help Vaughn reach the ancestral home, and Vaughn traveled with his portrait to the hidden entrance in London.
• Phineas Black explained that Kreacher would escort Vaughn inside and warned him that Walburga's portrait might cause trouble.
• Kreacher appeared, called Vaughn a traitor Weasley, then reluctantly agreed to take him into the ancestral home.

Vaughn entered the Black ancestral home with Kreacher and found the Locket Regulus had hidden. After learning how Regulus died, Kreacher agreed to help Vaughn retrieve him, and they arrived at the cave where Regulus lay beneath the lake.

• Kreacher brought Vaughn into the Black ancestral home, where Phineas Black argued with Walburga in a portrait.
• Vaughn asked about Regulus's Locket, and Kreacher Apparated to his bedroom to retrieve it.
• Vaughn followed Kreacher into the stone pit, petrified him, and took the Locket.
• Vaughn revealed that he knew how Regulus had sacrificed himself and asked Kreacher whether he wanted Regulus brought back.
• Kreacher accepted a transaction in which Vaughn would return Regulus in exchange for the Locket.
• Vaughn and Kreacher Apparated to the cave where Regulus lay beneath the lake.

Vaughn and Kreacher reached Voldemort’s hidden seaside cave, where Vaughn examined the powerful magic Voldemort had left behind. After entering the vast underground cavern, Vaughn tested how its magical darkness reacted to different spells, while Kreacher stayed beside him despite his fear.

• Vaughn identified the coast in southwestern Ireland, and Kreacher located the hidden cave entrance where he had once accompanied Voldemort.
• Vaughn used space magic to reach the cliff, then followed Kreacher through the seawater passage to the cave’s antechamber.
• Vaughn discovered that Voldemort had concealed the antechamber’s door by weaving its magic into the surrounding cliff and ocean, and he revealed it using Kreacher’s blood.
• Vaughn and Kreacher passed through the door into a vast cavern shaped and saturated with Voldemort’s magic, where a small island glowed across a great lake.
• Vaughn tested the cavern’s darkness with light, fire, and other spells, discovering that it swallowed some magic but allowed the Lumos Charm to push it back.

Vaughn and Kreacher crossed Voldemort’s enchanted lake and reached the island where the locket had been hidden. Vaughn identified several weaknesses in Voldemort’s magic and began investigating the lake’s Inferi before testing the replenishing Potions in the basin.

• Vaughn explained that spells could reflect their caster’s emotions and said Voldemort’s darkness and Inferi revealed fears of losing magic, a bleak life, and death.
• Vaughn found Voldemort’s hidden boat, disabled its green chain, and crossed the lake with Kreacher after explaining that it counted only wizards as people.
• Kreacher saw an Inferius in the lake and mourned Master Regulus, while Vaughn concluded that the lake could turn the dead into Inferi.
• Vaughn ordered his Self-writing Quill to record plans for a new magical research spell and catalogue his existing spells and Ancient Magic.
• Vaughn and Kreacher reached the island, where Kreacher recounted how Voldemort forced him to drink the Potions and Master Regulus was dragged into the lake.
• Vaughn found that the basin’s emerald Potions could not be touched or removed, and observed that liquid poured onto the ground vanished as the basin refilled.

Vaughn disrupted Voldemort’s cavern enchantment and used Kreacher’s magic to retrieve Regulus, then arranged for his burial and Sirius’s inheritance to be confirmed. Sirius awoke from the magical vision in Azkaban, learned that Regulus had died opposing Voldemort, and struggled to accept that his brother had been a hero.

• Vaughn recognized that Voldemort had linked the cavern’s objects through a system of rules and distorted its space to make the Inferi appear.
• Vaughn told Kreacher to summon Regulus, and Kreacher used Accio as the Inferi surged from the lake.
• Sirius woke from a vivid vision in Azkaban and argued with Bellatrix and the other Death Eaters after dreaming of Kreacher.
• Kreacher told Sirius in the vision that Regulus had discovered Voldemort’s secret, sacrificed his life to undermine the Dark Lord, and been buried with Vaughn’s help.
• Sirius recalled Regulus’s grave and Kreacher’s account, then began to believe the vision despite the conflict with his memories of his brother.

Sirius provoked the Dementors into draining the Death Eaters alongside him, while Crouch visited Vaughn at Black Manor and learned about his research into an ancient magical system. Crouch recognized that pure-blood families were searching for a new leader, and Vaughn had emerged as a possible candidate.

• Sirius told Bellatrix that Regulus was dead, then attacked his cell and summoned the Dementors, who drained him and the other Death Eaters of their emotions and will.
• Crouch arrived at Black Manor, where Kreacher welcomed him and explained that Vaughn had restored his hope and was organizing the family library.
• Walburga denounced Vaughn as an unworthy Weasley, and Phineas fought her before guiding Crouch onward through the portraits.
• Vaughn showed Crouch the Black family’s rare book Witch Poison and said he suspected the magic in Voldemort’s seaside cave came from an ancient system.
• Vaughn explained that he had invited Crouch to help study the cave, and Crouch considered how the weakened pure-blood families might rally around Vaughn as a new leader.

Barty Crouch joined Vaughn’s team to investigate the Dark Lord’s magic in the sea cave, partnering with Donald Graves while Lupin coordinated the research. As their work exposed disagreements over European ritual magic and North American Shaman traditions, Donald continued building ties with Vaughn and the Werewolves.

• Vaughn brought Crouch through a Dimension Gate to the sea cave, where Lupin reported that Kettleburn and a Kelpie were searching the lake and WAC wizards were surveying the island.
• Vaughn introduced Crouch to Donald Graves and assigned them to research the ritual together.
• Lupin reflected on Regulus’s sacrifice and the painful contrast between his fate and Sirius’s imprisonment in Azkaban.
• Crouch and Donald clashed over whether the Dark Lord’s magic relied on a hidden ritual or might involve Shaman traditions that could awaken natural spirits.
• Lupin visited the guarded tent beneath the cliff, where James Brown shared coffee Donald had brought for the Werewolf wizards.

Lupin hurried to find Vaughn on Christmas Eve, but found him and his colleagues investigating how the Stone Basin Potion affected a Grindylow. After the experiment overwhelmed Crouch and Graves, Donald explained how different Potions traditions studied distinct classes of active compounds, while the potion’s secrets remained unresolved.

• James reminded Lupin that Christmas was the next day, prompting Lupin to hurry into the cavern and seek Vaughn to ask for leave.
• Lupin passed through the potion-powered Thief-Proof Waterfall and the cavern’s warped spaces before Kettleburn teased him about being in love.
• Vaughn, Crouch, and Graves continued testing the Stone Basin Potion on a Grindylow and discussed its intense thirst and other possible effects.
• After an hour of analyzing the Flesh Polyhedron, Crouch and Graves became overwhelmed by the information and vomited beside the lake.
• Vaughn told Lupin that the Stone Basin Potion combined several traditions and that Tom had improved its ancient Alchemy techniques to evade analysis.
• Donald explained that Potions research studied biologically active secondary metabolites and that different schools specialized in synthesizing different categories of compounds.

Vaughn took Lupin to the Ministry of Magic for a Wizengamot inquiry after negotiations secured a Chinese delegation for the International Magic Academy Potions Exchange Event. He explained why Fudge and the Daily Prophet could claim credit without losing support, then summoned someone to his office, where Lupin unexpectedly encountered Tonks.

• Lupin learned that Dumbledore and the Refining Committee had negotiated with Fudge and China to send an exchange delegation to the Potions event.
• Lupin read the Daily Prophet's account crediting Fudge and the Ministry, while Vaughn explained that readers preferred political loyalties and comforting lies to the truth.
• Vaughn brought Lupin through the Dimension Gate to his Ministry office for a Wizengamot inquiry concerning Hogwarts.
• Lupin said werewolves still hoped Vaughn would establish a Werewolf Class at Hogwarts, and Vaughn laughed before sending a magical paper airplane.
• Tonks entered Vaughn's office, and she and Lupin recognized each other in surprise.

Vaughn arranged for Tonks to inspect WAC werewolf settlements with Lupin, then faced Amelia’s growing frustration over his and Dumbledore’s concessions to Fudge. As the Wizengamot inquiry approached, Vaughn hinted that the Pure-bloods might challenge him, leaving Amelia shaken and uncertain about their alliance.

• Vaughn assigned Tonks to inspect WAC werewolf settlements, with Lupin as her guide, and sent them off together.
• Amelia questioned Vaughn’s apparent sentimentality and suggested he seemed to be trying to make up for a regret by bringing Lupin and Tonks together.
• Amelia accused Vaughn and Dumbledore of letting Fudge gain power and of disregarding her ambition to lead the Ministry of Magic.
• Amelia left to prepare for the Wizengamot inquiry and told Vaughn to join her so others would not suspect a rift between them.
• Vaughn hinted that Pure-bloods might make trouble for him at the inquiry, and Amelia left the office shaken.

Harry and the other Hogwarts students spent Christmas at school amid a growing fascination with China and its magical creatures, traditions, and potions. At lunch, Ginny revealed that Vaughn's Potions Exchange Program had succeeded and that a delegation from the Central Academy of Qi Practitioners would soon visit Hogwarts.

• Ron invited Harry to join him in asking Percy to bring sweets from Hogsmeade, while explaining why the Weasley children and several other students had stayed at Hogwarts.
• Hogwarts professors introduced students to China through lessons on its size, magical traditions, creatures, and Traditional Chinese Medicine, sparking an Eastern craze at school.
• Harry and the other boys went to the Great Hall for lunch and found students discussing a newspaper report that credited Fudge with achievements Lee Jordan said belonged to Vaughn.
• Ginny told Harry and the others that the Central Academy of Qi Practitioners had completed cooperation negotiations with the Ministry of Magic and would soon send an exchange delegation to Hogwarts.

Harry, Ron, and Hermione learned that the Potion Exchange Event could bring magical schools from around the world to Hogwarts and worried about the rivalries among them. On Christmas Eve, Harry wondered where Vaughn was, while Vaughn stayed in Ravenclaw Tower and spoke with Cho Chang about her deep-rooted resentment toward the Japanese Magic Institute and her sense that Vaughn understood her.

• Hermione explained that the Potion Exchange Event could draw nine major magical universities into international exchange, and the students discussed China, Durmstrang, and other schools.
• Neville reported that Malfoy had praised Durmstrang and its Headmaster Igor Karkaroff, while Hermione relayed Cho Chang's account of the longstanding hostility between the Central Alchemy Academy and the Magic Institute.
• Harry, Ron, and Hermione walked through the snow to spend Christmas Eve with Hagrid, and Harry reflected on the difficulties Vaughn had faced during the year.
• Vaughn stayed in Ravenclaw Tower as Professor Flitwick's fireworks lit the sky, and Cho Chang joined him after the other students left.
• Cho Chang told Vaughn that only he understood her deep-rooted hatred and that he seemed more like someone of Chinese descent than she did; Vaughn joked that he might have been Chinese in a past life.

Vaughn told Cho Zhang that the Potion Exchange Event would focus solely on Potions and that troublemakers would be expelled, while Dumbledore questioned his motives and worried about his growing ambitions. The chapter ended with Master Li pressing Dumbledore to repair his relationship with Vaughn as China prepared for the exchange delegation’s arrival.

• Cho Zhang relayed her father's doubts about Vaughn's Potion Exchange Event and warned that the Central Alchemy Academy and the Magic Institute could not coexist peacefully.
• Vaughn told Cho Zhang that he would keep the event focused on Potions and expel anyone who caused trouble.
• Vaughn discussed the event with Dumbledore, confirmed his no-politics policy, and mentioned that he might restart the Triwizard Tournament afterward.
• Dumbledore suspected Vaughn was using the event to build ties with China and feared that China might become an ally in Vaughn's ambition to break the Statute of Secrecy.
• Master Li confronted Dumbledore about his lack of progress with Vaughn, while China prepared cloud-woven carriages for the academy delegation.