Chapter Summaries

Lupin taught the third-year Gryffindors how to identify Boggarts and defeat them with the Riddikulus Charm. The Boggart revealed the students’ fears, including Harry’s fear of Dementors, before turning into a feather duster when it faced Charles.

• Lupin introduced the Boggart hidden in the wardrobe and taught the class that laughter and the Riddikulus Charm could drive it away.
• Ron’s Boggart appeared as Hermione’s father, a dentist, before Ron transformed it into a gold coin.
• Neville turned the Boggart’s Snape form into a Mandrake, prompting laughter from the class.
• Hermione faced a Boggart version of Charles, which changed into a figure wearing a white dress and red lipstick.
• Seamus’s fear of a ghost turned the Boggart into a balloon, which flew into Harry and became a Dementor.
• Charles pulled Harry toward Lupin, and the Boggart facing Charles transformed into an ornate feather duster.

Charles visited Lupin with Harry on the night Lupin began taking his medicine, and they found Dumbledore discussing Harry’s fear of Dementors. Lupin offered to teach Harry the Patronus Charm over the weekend, while Charles declined, saying he was friends with Dementors.

• Fred and George complained about their increased homework while crafting a Mandrake Snape that amused Crookshanks and Harry.
• Charles left the Common Room, and Harry followed him to visit Lupin on the first night of Lupin’s medicine.
• Charles and Harry gave Dumbledore excuses for being out after curfew, and Dumbledore let them stay.
• Dumbledore demonstrated his phoenix Patronus, and Lupin explained that he could teach Harry the Patronus Charm over the weekend.
• Harry eagerly agreed to learn the spell and invited Charles, who declined, saying he was friends with Dementors.

Charles checked that Lupin was taking the experimental medicine intended to prevent his transformations, while Dumbledore arranged precautions for the full moon. After Harry revealed a letter suggesting Black might be innocent, Charles left the conversation and continued practicing his Mirror Space spell.

• Lupin explained that he was taking black capsules containing concentrated Marifasa juice and planned to spend the full-moon night at the Shrieking Shack with Dumbledore.
• Harry learned that Lupin was a werewolf, and Dumbledore warned Harry and Charles to keep the treatment secret because werewolf bullies might threaten Lupin and the potion-makers in China.
• Lupin joked that werewolves who went to China would have to try its terrible potion formulas, and Dumbledore described Chinese Flying Swords to Harry.
• Harry told Lupin and Dumbledore that an anonymous summer letter had said Black might be innocent, but the letter had burned to ashes after he read it.
• Charles left to practice Mirror Space in the Room of Requirement and realized he needed to combine the spell with scouting to avoid overlooking objects.

Charles puzzled over his unusual Patronus and joined the students celebrating Dumbledore’s new Hogsmeade policy. He left for the village with his friends, where a beautiful woman waved to him.

• Hermione found Charles looking unwell after he returned from being taken to the headmaster, and he spent the night wondering what a peashooter Patronus was.
• Seamus woke Charles on Saturday, and Dumbledore announced that students could visit Hogsmeade on the first and third weekends of each month.
• Harry tried to discuss Black with Charles, but Charles distracted him until Seamus announced that they could go to Hogsmeade.
• Professor McGonagall questioned Harry’s permission form and warned Charles not to use it to threaten Harry, while Charles handed over his own form.
• Charles and the others reached Hogsmeade, where a beautiful woman waved to him.

Charles planned to turn an empty Hogsmeade building into a restaurant that would feed Farbaton Castle’s employees and serve local diners. After arranging a partnership with Aberforth, he looked for startup money, while Harry spotted a large black dog outside Hogsmeade.

• Madame Delacour visited her husband in Hogsmeade, greeted Charles and his classmates, and invited Charles to lunch, but he declined.
• Aberforth gave Charles a fizzy drink that made him speak in bubbles, and Charles proposed renovating the Hog's Head Inn into a restaurant for the company’s employees.
• Dumbledore offered Aberforth a job at the Centaur Liaison Office, and Charles proposed instead that Dobby and the other House-elves cook for diners at the Hog's Head Inn in exchange for a share of profits.
• Aberforth agreed to the restaurant plan and showed Charles an empty four-story building beside Madam Puddifoot's Tea Shop that could be rented.
• Charles asked Grindelwald for a loan, but Grindelwald had no hidden fortune; Charles then said he knew how to make money.
• On the outskirts of Hogsmeade, Harry pointed out a large black dog sneezing to Hermione.

Charles planned the staff restaurant at Farbaton Castle, tested his Human Transfiguration and Patronus, then tracked down Black in the mountains near Hogwarts. He offered Black canned food while Black warily questioned whether he had come to claim the bounty.

• Charles agreed with Horace Jones on a Victorian design for the restaurant and learned that its furnishings and magical features would be expensive.
• Charles asked Dobby to bring cookbooks so the House-elves could learn more dishes for Jack and Grindelwald to taste.
• Charles got leave from Professor McGonagall and transformed himself into Grindelwald in the Forbidden Forest.
• Charles used his Ship Girl Patronus to knock a patrolling Dementor unconscious and then followed Grindelwald's hair to Black's hiding place.
• Charles found Black beside a bonfire with two locket pendants, gave him canned food, and claimed his own bounty was much higher.

Charles visited Black to borrow one hundred thousand Galleons and revealed that Voldemort had made multiple Horcruxes, including the locket Black possessed. After Black agreed to the loan and signed a confidentiality agreement, he discovered that Grindelwald was the borrower.

• Charles asked Black to lend him one hundred thousand Galleons for five years at five percent annual interest.
• Charles warned Black that Voldemort had made multiple Horcruxes and that the locket could possess whoever handled it.
• Black laughed at the news that Harry had a girlfriend, then grieved for James Potter and grew furious when he remembered Peter’s betrayal.
• Charles deduced that Black and James had pretended Black was the Secret-Keeper while Peter actually held the secret, and suggested investigating why Voldemort targeted Harry.
• Black agreed to the loan and signed Charles’s confidentiality agreement, then saw Grindelwald’s name appear as the borrower.

Charles explained the difference between true and false prophecies to the Gryffindors after Harry feared he would die because Professor Trelawney predicted he would see a big dog. The students reconsidered the prophecy, though Oliver Wood remained worried Harry might crash during Quidditch practice.

• Charles gave Dobby the money Black had withdrawn and told him to fund the restaurant renovation.
• Dumbledore told Charles that Dementors had been attacked and agreed to raise Charles's concern that Voldemort might be drawing more Dementors to Hogwarts with Fudge.
• Harry told Charles that he expected to die after seeing a black dog, and Lavender and Parvati explained Professor Trelawney's prediction.
• Charles taught the gathered students that true prophecies glimpsed the future through interference, while false prophecies often relied on obvious facts or likely outcomes.
• Professor Trelawney awarded Charles ten points, and Oliver Wood considered assigning someone to watch Harry during Quidditch training.

Charles considered whether Alchemy could make room-temperature superconductors and support controlled nuclear fusion, then planned a feasibility study. The chapter left him preparing to research electrical resistance in altered metals using his international contacts and a Hogsmeade workspace.

• Snape watched Charles closely in Potions after remembering his vague prediction that his house would explode, while a Snape-Mandrake doll was chopped apart by Sectumsempra at the professors' table.
• Professor Delacour taught the students to treat lead with a complicated potion, and Charles examined the remaining lead shell while considering an idea beyond making money.
• Charles thought through the requirements for controlled nuclear fusion and wondered whether Alchemy could create room-temperature superconductors, though he recognized that he lacked the necessary knowledge.
• Malfoy taunted Harry about dying, but Harry turned the exchange against him; Malfoy then began producing birdsong after Charles's spell, and Professor McGonagall sent him to the hospital wing.
• Charles planned to ask his contacts abroad about Alchemical research and to test whether Alchemy changed metal's electrical resistance, using lead and the Centaur Liaison Office's Hogsmeade house.

Charles spent the weekend tending seedlings, drawing, and seeking approval to test how alchemical processing affected metals’ electrical properties. Professor Delacour approved the experiments and told him to come to the classroom the following evening.

• Percy told the third-year students to drink protective potion, and Harry found that it tasted like milk.
• Joyce told Charles she was captain of the next Potion Championship team and was seeking younger students for tryouts; Percy later came to sign up.
• Charles practiced magical oil painting at the Painting Association while Tier watched him draw Hatsune Miku.
• Charles handed Professor Delacour an application to test whether alchemical processing changed metals’ electrical properties, and she approved the experiments.

Charles finished brewing potions with Professor Delacour, then overheard Percy discussing his plans for the Potion Championship. The chapter ended with Ron and Hermione arguing in the Common Room.

• Charles and Professor Delacour completed two potions, then shared Gabrielle's overly salty meringue.
• Professor Delacour asked Charles about rumors that he had a girlfriend and received gifts on Valentine's Day; Charles dodged the questions and hurried back to the Common Room.
• Charles overheard Fred and George ask Percy about Slytherin's old knowledge, and Percy said he wanted to learn Slytherin's way of thinking to develop potions and antidotes for the Potion Championship.
• Percy lectured Fred and George about setting an example for Ron and Ginny and respecting girls' wishes.
• After the Weasleys entered the Common Room, Charles waited before following and saw Ron and Hermione arguing.

Charles ignored Ron and Hermione’s repeated quarrels while juggling schoolwork, experiments, and business, but the approaching internet age left him so frustrated that he considered dropping out. Seamus tried to cheer him up, but Charles already had plans to pick something up the next day and visit the Centaurs the day after.

• Ron asked Charles to take his side against Hermione, but Charles refused and Ron left for the dormitory.
• Hermione and Ron continued arguing in the days that followed, while Harry tried to mediate and practiced the Patronus Charm at night.
• Ruby brought replies from Jeff, Kytov, and Mantz, and Charles named the main company Phoenix Logistics, with Ruby as its trademark.
• Seamus confronted Charles about impersonating him in Germany after recognizing the source of Ruby’s large supply of German snacks.
• Harry asked Charles how to stop Ron and Hermione’s arguments, but Charles gave him only absurd advice.
• Charles told Seamus he had considered dropping out because he felt trapped in the castle as the internet age approached, then said he would pick something up the next day and visit the Centaurs the day after.

Charles’s Hogsmeade restaurant drew students and prominent wizards to a dessert promotion, while Eleanor discussed the restaurant’s political connections and her future with Charles. The restaurant remained under construction, and Eleanor left with a document about an oilfield that Charles hoped to sell.

• Neville led Seamus and Dean to the restaurant’s promotion, where visitors drew animated desserts and Malfoy was injured by a mousetrap after trying to draw more than once.
• Harry, Ron, Dumbledore, Ollivander, Professor McGonagall, Scrimgeour, and other Aurors attended the event, and the Aurors entered the restaurant for breakfast.
• Charles reviewed supplies for the Centaurs while Eleanor explained how the restaurant’s payments reached Fudge and described its VIP card system.
• Eleanor said she had cut ties with her family and asked Charles for a restaurant job, but he rejected the idea.
• Charles gave Eleanor a document about an oilfield near London and offered her a five percent commission to sell it, with the possibility of working there later.

Eleanor confronted Charles about his uncanny gambling and investment record and asked him to predict black swan events for the capitalists behind her. She offered to connect him with Manchester United owner Martin Edwards for investment in exchange for supporting legal access to potions for wizards’ Muggle relatives, and Charles agreed.

• Eleanor told Charles that the capitalists had investigated his winning sports bets, stock investments, and foreign-exchange dealings, and wanted him to identify coming black swan events.
• Charles stayed silent about future events and explained that he no longer understood the world’s politics after 1991.
• Charles asked Eleanor to investigate whether information about an oil field could be sold, but she warned that oil companies might already know about it.
• Eleanor offered to arrange investment in Charles’s business plans in return for his becoming a relative of the investors when they needed him, as part of a push to legalize potions for wizards’ Muggle relatives.
• Eleanor identified the investor as Martin Edwards and explained that he and Ferguson had discovered Charles’s potion had healed David.
• Charles agreed to meet Martin Edwards and support the arrangement.

Charles explained that combining magic with Muggle technology could lead humanity toward space travel, and offered Snape a lucrative business involving Muggles. Dumbledore recognized the potential upheaval, while Snape left the Headmaster's Office unable to refute Charles's argument.

• Eleanor told Charles that several recent Hogwarts graduates had secretly been bought off, and Charles asked her to arrange for him to attend Cambridge or Oxford after graduation.
• Dumbledore summoned Charles after a prank treat made colorful insects swarm around his head, and Charles showed him how to eat them before secretly photographing the spectacle.
• Dumbledore gave Charles early career counseling, and Charles described a future company worth fifty-six billion Galleons with annual profits of two and a half billion.
• Snape mocked Charles, but Charles offered him a business opportunity involving Muggles that could earn at least one hundred thousand Galleons a year.
• Charles told Dumbledore and Snape that combining magic with Muggle technology could fulfill his wish and send future humanity across the stars, and Snape accused him of trying to start a war.
• Dumbledore told Charles to leave and warned him to keep their conversation secret, while Snape left the office unable to answer Charles's argument.

Charles tested his new saber-and-wand weapon while culling Acromantulas in the Forbidden Forest, then discovered and confronted Barty Crouch Jr. in disguise. Crouch delivered Charles’s cake and menu to Voldemort, who was left puzzled by the message.

• Charles gave the Dementors a basket of potion-laced biscuits, then visited the Centaurs to deliver food and collect goods.
• Charles rode his broomstick through the Forbidden Forest, killing Acromantulas with his weapon and destroying one nest with his Air Fryer Charm.
• Charles sensed someone watching him, spotted a Dementor, and discovered Barty Crouch Jr. near the forest.
• Crouch reported to Voldemort that Charles had caught him spying and had been testing spells on Acromantulas.
• Crouch gave Voldemort Charles’s Iceberg Cake and menu, leaving Voldemort wondering what Charles intended.

Charles helped the Centaurs turn the chicken-stealing dog into a guard for their pumpkin patch, where they named it Preserved Egg. After the Aurors found evidence that Black had been nearby, Dumbledore and Lupin returned without catching him, and Lupin quietly asked Charles whether the Centaurs had noticed any unfamiliar animals.

• The Centaurs told Charles that Bane had caught a dog stealing their chickens, and Charles suggested using it to guard the pumpkin patch and catch rats.
• The Centaurs named the dog Preserved Egg, and Ronan took it to the pumpkin patch for its first night on watch.
• McGonagall told Charles that Harry, Hermione, and Ron had tried to catch Black and were serving detention in Snape's office.
• Dumbledore and Lupin returned after Aurors found a fire and cans left behind by Black in a northern cave, and Dumbledore advised Charles to visit the Centaurs with a professor.
• Lupin privately asked Charles whether the Centaurs had noticed unfamiliar animals in the Forbidden Forest, and Charles said he had heard nothing unusual besides the Dementors.

Charles tested a potion-making device powered by Crookshanks, whose sudden energy and appetite astonished Ron. After Hermione asked Charles for Exploding Liquid to prepare for Black possibly entering Hogwarts, Fred and George told Charles they had run out of money.

• Charles showed Professor Delacour a magical magnetic stirrer and assembled a hamster-wheel-powered device for a potion that could not touch enchanted objects.
• Ron put Crookshanks in the wheel, where the cat ran furiously and helped Charles finish stirring the potion before it went into a cabinet to react for several days.
• Charles rewarded Crookshanks with a sausage, and Ron was amazed by how much the cat ate; Peter trembled inside the dark, expanded Chocolate Frog box.
• On the way back to the Common Room, Hermione asked Charles for Exploding Liquid because she feared Black might sneak into Hogwarts, and Charles agreed to provide some later.
• Fred and George pulled Charles aside in the Common Room and asked him to help them make money because they were broke.

After Fred and George’s failed Bag of Holding experiment, Charles proposed that they develop magical games and offered seed money. He also described plans to invest in student businesses according to academic results and recommendations, leaving the twins worried that they might not meet his standards.

• Fred and George’s Bag of Holding experiment burned their hair, part of a dormitory, and their luggage, leaving them owing compensation.
• Charles suggested that Fred, George, and Lee Jordan develop magical games, beginning with a simple Tetris-like game and eventually researching a machine with interchangeable game cards.
• Charles offered Fred and George fifty Galleons to begin their research and asked what work they wanted in the future.
• Fred and George rejected the idea of joining the Ministry of Magic, while Percy and three Quidditch players teased them about needing respectable work.
• Charles explained that future investments in student businesses would depend on exam results and recommendation letters from deans or headmasters, alarming Fred and George.

Charles considered pursuing superconductivity and graphene research after reading about Muggle science, then asked Dumbledore for permission to use a Time-Turner with Hermione and was refused. He left to plan his experiments, his unsettling excitement convincing Harry and Hermione that he had found a lot of money.

• Ginny brought Charles jam tarts from Mrs. Weasley, who also invited him to visit during the summer holidays.
• Charles read his friends’ replies about metal resistance and a review of superconductivity research, and he saw an opportunity to break new ground.
• Dumbledore found Charles absorbed in his reading after dinner, but refused his request to use the Time-Turner with Hermione.
• Charles learned a spell to curl the edge of Scotch Tape, teased Dumbledore, and hurried off to plan graphene experiments and a possible paper.
• Charles returned to the Common Room grinning strangely, and Harry and Hermione concluded that he had found a great deal of money.