Chapter Summaries

Andrew spent Christmas at the home, sending out a huge number of gifts and reflecting on his studies of spellcasting. After the holiday ended, Professor McGonagall arrived to take him back to school.

• Andrew packed gifts for Hogwarts and sent Rose out with parcels, then continued using her to carry deliveries despite her growing exhaustion.
• Andrew reviewed his theories about spellcasting but crossed out his notes because he lacked the knowledge to prove them.
• Andrew celebrated Christmas at the home, received computer books from Mrs. Camille, and spent the day reading donated books.
• Professor McGonagall arrived the day after Christmas, and Andrew realized she meant for him to return to school immediately.

Andrew returned to Hogwarts with Professor McGonagall, who explained that Dumbledore’s framework was gaining support and a law might pass before Easter. He learned a laboratory had made progress on Alchemy textile machinery, reflected on the difficulty of research, and was left in charge of McGonagall’s paperwork while she took three days off.

• Professor McGonagall told Andrew that debate over new technologies had increased support for Dumbledore’s framework and that the law might pass before Easter.
• Professor McGonagall said the Alchemy textile machinery laboratory had made a breakthrough and asked Andrew what he thought of its new spinning machine.
• Andrew admitted he had been impatient about research, and Professor McGonagall reminded him that most laboratory work produced little progress.
• Professor McGonagall told Andrew she was taking three days off and left him to handle the paperwork.

Andrew returned to Hogwarts after Christmas, sorted through a surprising pile of gifts, and handled the day's paperwork. Sirius then brought him to Professor Nina, revealing that they had made a breakthrough while investigating clues connected to the Peeves incident.

• Andrew greeted Hagrid, gave him gin, and declined his invitation to visit the hut so he could check in at the Castle.
• Andrew found a large pile of gifts in his dormitory, hid the dangerous package and stowed the others, then went to his office.
• Andrew reviewed the spinning laboratory's loom improvements, approved the report for Professor McGonagall to review, and replied to other schools' holiday greetings.
• Sirius stopped Andrew in the corridor and led him to an empty classroom, where Professor Nina was waiting.
• Sirius told Andrew that he and Professor Nina had made a real breakthrough in their investigation of clues related to the Peeves incident.

Andrew joined Sirius and Professor Nina in investigating a supposed Ravenclaw treasure and learned that Sirius had found a magical map of Hogwarts with his friends. After Andrew suspected Sirius was being controlled and restrained him, he apologized and concluded Sirius had hidden the map’s whereabouts.

• Sirius told Andrew that he and his friends had found a Gryffindor treasure: a map showing everyone in Hogwarts and its secret passages, which Filch later acquired.
• Sirius said the treasure might be hidden in Ravenclaw's common room and suggested that a student who met the founder's expectations could unlock it.
• Andrew suspected Sirius was under someone’s control and used Transfiguration to restrain him, but his detection spell revealed nothing.
• Andrew released Sirius, apologized, and guessed that Sirius had merely withheld information because Andrew was not allowed to see the map.

Sirius told Andrew that Ravenclaw’s secret chamber might be opened by putting Peeves into the Bronze Knocker, based on a story from Lady Grey. Andrew agreed to inform his Head of House and let Sirius and Professor Nina continue their search, while keeping the source of their information quiet.

• Sirius explained that he and Professor Nina had found a storeroom of Sickles and suspected Ravenclaw had left a secret chamber, then proposed that Peeves was connected to the Bronze Knocker.
• Andrew doubted Sirius’s theory and worried that provoking Peeves could unleash chaos across Hogwarts.
• After Professor Nina left the room, Sirius told Andrew that Lady Grey, Ravenclaw’s daughter, had revealed how Lady Rowena used to lock Peeves by the Bronze Knocker when he disturbed her.
• Sirius explained that Bloody Baron had punished Peeves since Hogwarts’s earliest days and that he and Professor Nina had traced the chamber clue through the Ghosts.
• Andrew agreed to tell his Head of House, give his share to Ravenclaw, and keep quiet about how they learned the secret.
• Sirius went to fetch Professor Nina and warned Andrew not to reveal their source.

Andrew reconsidered how to get Peeves into the Bronze Knocker and concluded that an inherited trap could lure him there. Dumbledore approved cautiously, leaving Andrew to find a Ravenclaw willing to bait Peeves while Headmistress Euphrasia Moore warned of the danger.

• Professor Flitwick rejected Andrew's suggestion to tie Peeves to the Bronze Knocker and went to ask Albus for a Help Request.
• Andrew reconsidered Ravenclaw's clue and reasoned that Peeves would need to be tricked into the knocker using an old trap devised by Rancorous Kalpe.
• Andrew proposed the idea to Dumbledore, who agreed to try it and told her to find a Ravenclaw to lure Peeves while keeping Sirius and Nina out of it.
• Headmistress Euphrasia Moore warned that Rancorous Kalpe's trap had once made Peeves run wild through the Castle with a Cannon.
• Dumbledore maintained that opening Ravenclaw's Chamber of Secrets was worth the risk, and Moore advised using close-combat weapons such as a whip.

Andrew and Professor Flitwick used Elizabeth as bait to trap Peeves with Ravenclaw’s Door Knocker, opening a hidden Chamber of Secrets. Dumbledore could not enter, while Andrew, Sirius, Professor Nina, and Elizabeth could, leaving the group poised to explore the Chamber.

• Professor Flitwick chose Elizabeth to help Andrew lure Peeves, and Andrew and Elizabeth searched Filch’s records for an old object to use as bait.
• Peeves followed the scent of the bait and lunged at Elizabeth, but Ravenclaw’s voice and the Door Knocker restrained him.
• The wall opposite Ravenclaw’s Common Room entrance glowed blue, revealing an entrance, and Elizabeth summoned the professors.
• Flitwick entered the Chamber, but Dumbledore was repelled and concluded that Lady Ravenclaw had barred the Headmaster from entering.
• Andrew, Sirius, Professor Nina, and Elizabeth tested the entrance and found they could enter safely.

Andrew, Professor Nina, Sirius, and Professor Flitwick explored the Chamber of Secrets and found a preserved room with books, a Portrait, and seven chests, but no hidden knowledge. The room expelled them with one chest, and Andrew agreed to record the books’ titles for Professor Flitwick.

• Andrew entered the Chamber of Secrets with Professor Nina and Sirius and found Professor Flitwick waiting inside, unable to remain there once he left.
• Andrew searched the bookshelves and found only familiar Library books and works on obsolete magic, while Professor Flitwick explained that Lady Ravenclaw had not hidden a trove of knowledge.
• Professor Nina examined the Portrait, and Andrew found seven small chests beneath the desk but no manuscripts or unusual objects.
• As the room began rejecting them, Professor Nina and Sirius chose a chest, and the group was spun out of the Chamber.
• Andrew told Professor Flitwick that the books held nothing advanced, then extracted a memory of their titles so Professor Flitwick could add copies to the Common Room.

Andrew and the professors opened Lady Ravenclaw's hidden box and uncovered valuable Hogwarts relics, magical spoils, and spellcasting manuscripts. They began deciding how to divide the discoveries, while Dumbledore and Professor Flitwick recognized a raven ornament from Ravenclaw's portrait.

• After Andrew and Dumbledore secured the Memory, the Chamber of Secrets door vanished into the wall.
• Andrew opened the box, revealing blue gemstones matching those in Hogwarts' House Point Hourglasses, and Andrew donated his share to Ravenclaw House.
• The box produced preserved Sickles as payment for the bait, and Andrew worried that Peeves would target Elizabeth.
• The box yielded magical items once owned by Dark Wizards, which Professor Flitwick said could be divided among the finders.
• Professor Flitwick examined Lady Ravenclaw's spellcasting notes and told Andrew to wait until he was older before studying them.
• The box produced four boxed objects, and Professor Flitwick and Dumbledore identified the raven ornament as the one from Ravenclaw's portrait.

Andrew and the others divided Ravenclaw’s gifts, uncovering a letter that exempted its holder from school punishments for the term. Flitwick and Dumbledore recognized the letter’s authority, and Andrew kept it as protection while Elizabeth went to visit the Bloody Baron.

• Professor Nina took the brooch, Sirius chose the mirror, and Andrew received Hufflepuff’s vinegar-producing cup.
• Andrew read a note revealing that Helga had made a secret chamber accessible to everyone and worried that Ravenclaw’s Diadem might still be inside.
• The last gift contained Rowena Ravenclaw’s letter exempting its holder from detentions, punishments, house-point deductions, and expulsion for the term.
• Flitwick and Dumbledore acknowledged the letter, and Andrew decided to keep it despite his reluctance.
• Peeves threatened Elizabeth before fleeing, and Elizabeth hurried off to visit Mr. Bloody Baron.

Andrew sorted through the magical items from Ravenclaw’s treasure, deciding to preserve them as historical alchemy materials and consider creating a Hogwarts award in Ravenclaw’s name. He prepared gifts and headed to find Dumbledore, while planning to retrieve Ravenclaw’s Diadem that night.

• Andrew examined the treasure extras and found mostly outdated, unattractive, or useless magical items, then decided to keep them for alchemy study and eventual donation to Hogwarts.
• Andrew imagined using the collection to establish an award honoring Ravenclaw’s contributions, potentially with help from the Head of House.
• Andrew remembered his unwrapped presents and his wish to study Dumbledore’s magical Firecrackers, then prepared gifts for Dumbledore and the professor.
• Andrew wrapped a constellation Locating Compass and a glowing stone inside a Firecracker, and decided to discuss the treasure and award plans with the Head of House and Dumbledore.
• Andrew identified where Ravenclaw’s Diadem was hidden and planned to move it to the laboratory that night before going to find Dumbledore.

After the castle’s inheritance incident, Andrew kept quiet about it and prepared for a secret nighttime expedition. He retrieved an old diadem from the Room of Requirement and locked it away beside his Laboratory.

• Andrew told Dumbledore and the portraits that no one had been hurt and that Peeves planned revenge, then agreed that the inheritance news should remain secret.
• Andrew sorted his gifts, including an Invisibility Cloak, and waited until the school was asleep before leaving his Dormitory.
• Andrew reached the Seventh Floor, entered the Room of Requirement, and searched for the old diadem.
• Andrew found the diadem on a crate beside a statue, wrapped it in dragon hide, and carried it to the room beside his Laboratory.
• Andrew locked the diadem away and made a wish that, if it were ever exposed, he would reveal every Horcrux, including Harry.

Andrew kept the Horcrux locked away and began investigating the Room of Requirement as a new research subject. After testing its limits, he concluded that it was connected to Hogwarts' storerooms and planned to return for more research.

• Andrew decided not to study the Horcrux further until he could hand it over to Dumbledore, and chose the Room of Requirement as his next research subject.
• Andrew asked the Room of Requirement for rabbits and found it produced Transfigured models rather than living creatures; he also tested how it handled creatures and humanoid forms.
• Andrew tested the room from inside and found it could create many simple objects but struggled with complex Transfigurations and electronic devices.
• Andrew checked the school storeroom's candle count with Jim and learned that thirty candles were missing.
• Andrew concluded that the Room of Requirement was connected to the school's storerooms and planned to continue investigating it after lunch.

Andrew returned to Hogwarts and discussed the controversy over a proposed law concerning Artificial Wizards with his roommates, while keeping his own work on the Room of Requirement private. The students headed to the start-of-term feast, and Andrew resolved to focus on reproducing the room’s magical techniques.

• Hal admired Andrew’s limited-edition Quills and was astonished when Andrew showed him a custom Thunderbird Feather edition.
• Hal told Andrew that Peeves had targeted Elizabeth with water balloons in the Great Hall, and that Prefects had helped protect her.
• Bell, Hal, and Hughes discussed the proposed Artificial Wizards law, and Andrew said he supported Dumbledore’s position and would not research it.
• Andrew reflected that he had begun finding ways to break down parts of the Room of Requirement’s magic for his own Transfiguration.
• Bell called Andrew to hurry to the special feast, and Andrew joined his roommates on the way to dinner.

Andrew saw Professor Nina seeking guidance from Professor Flitwick as she prepared to teach, while Flitwick urged Andrew to strengthen his Charms foundation. Nina then asked Andrew for help with her teaching, admitting she struggled to organize and explain advanced material.

• Andrew read an old magazine article on the development of Charms while Professor Flitwick tutored Nina.
• Professor Flitwick explained that Nina had paid for his support in securing backing from the professors and Board of Governors, but he had refused her most precious treasure.
• Professor Flitwick told Andrew to focus on building his Charms foundation and gave him books and snacks to take away.
• Nina stopped Andrew in the corridor and asked him to help with her teaching, explaining that she struggled with advanced material.

Nina struggled to prepare the fifth years for their Anti-Dark Arts exams and decided to sacrifice her free time to help them. Meanwhile, Andrew prepared to show Professor Flitwick a dangerous discovery, summoning Dumbledore to his Laboratory for extra precautions before revealing it.

• Nina told Andrew that the fifth years' knowledge was badly disorganized, and Andrew suggested focusing on exam essentials and letting stronger students study independently.
• Nina decided to spend more of her rest time answering questions and allow some students to work on their own assignments during class.
• Andrew wrapped the Ravenclaw's Diadem in Dragon Hide and arranged for Dumbledore to come secretly to his Laboratory.
• Andrew summoned a House-elf to deliver Dumbledore his urgent note and instructed it to keep Professor Flitwick at the Laboratory if Andrew was not there.
• Andrew went to Professor Flitwick's Office, told him he had made an important discovery, and led him toward the Laboratory.

Andrew brought Professor Flitwick to his laboratory and showed him an object he suspected was a Horcrux, comparing its presence to Tom Riddle’s Diary. Dumbledore confirmed the object was dangerous and took it away, while wondering how Andrew had found it.

• Flitwick followed Andrew to his laboratory, where Dumbledore was waiting outside under a Disillusionment Charm.
• Andrew brought out a Dragon Hide bundle and told Dumbledore it gave him the same feeling as the Diary.
• Andrew revealed the bundle contained an old, battered object resembling Ravenclaw’s Diadem.
• Flitwick doubted the object was genuine and reached to examine it, but Dumbledore struck it with a spell that the Diadem deflected.
• Dumbledore told Flitwick he was wrong, said someone else had placed the Diadem in the Chamber of Secrets, and took it away.
• Dumbledore wondered how Andrew had found the chamber.

Dumbledore took Ravenclaw's Diadem from the Laboratory after revealing that it was a Horcrux, leaving Professor Flitwick furious about the desecration of Ravenclaw's treasure. Flitwick decided to seek compensation from Dumbledore and told Andrew to keep the Diadem secret, while promising to put him forward for Prefect in Fifth Year.

• Dumbledore refused to explain the Diadem's origins to Flitwick and said he would take it away for examination.
• Flitwick realized the Diadem was a Horcrux and demanded to know whose soul fragment it held, but Dumbledore declined to answer.
• Flitwick angrily threatened to bury the Dark Wizard responsible beneath the Astronomy Tower as Dumbledore packed up the Diadem and left with it.
• Flitwick scolded Andrew for showing him the Diadem, then said he would ask Dumbledore to compensate Ravenclaw for taking it.
• Flitwick ordered Andrew to keep the Diadem secret, encouraged him to appear more often in the study group, and promised to nominate him for Prefect in Fifth Year.

During a peaceful stretch at Hogwarts, Andrew’s study of potion ingredients paid off when he began sensing how a potion should be made and produced an unusual jewel-blue brew. The chapter ended with Hal discovering Snape had let Andrew help grade Potions assignments, leaving him convinced Andrew’s standing at school was changing.

• Andrew gained permission from Professor McGonagall to use the Time-Turner for an extra hour each day and studied potion ingredients intensively.
• During Potions class, Andrew added Eight-Eyed Fish scales late and produced a blue potion unlike the textbook version.
• Andrew sensed that the tentacles belonged earlier in the recipe, then asked Professor Snape for help before changing the ingredient order.
• Professor Snape watched Andrew finish the jewel-blue potion without deducting points, while Hal struggled to repair his own brew.
• After class, Hal saw Snape give Andrew transcripts to mark and compare, then left without telling anyone what he had witnessed.

Andrew learned that Durmstrang had revealed plans for the Triwizard Tournament five months early, forcing him and Professor McGonagall to prepare for the fallout. The announcement was set for the evening holiday feast, and Andrew could only wait to see how the wizarding world responded.

• Andrew planned to stay at Hogwarts over Easter to improve his Potions skills and continue researching with the Time-Turner.
• Andrew received an official letter revealing that Durmstrang had exposed the Triwizard Tournament plans early, and Percy was shocked by the news.
• Andrew told Percy to report to the Ministry of Magic as an intern and arranged for Jim to provide his recommendation letter.
• Professor McGonagall returned, and Andrew explained that Headmaster Karkaroff had announced the tournament early after pressure from proposed laws against Dark Magic.
• Professor McGonagall confirmed that Karkaroff would make the announcement at the holiday feast that evening, leaving Hogwarts to prepare a response.