Chapter Summaries

Douglas ignored gossip about Lockhart’s trial, while secretly sending The Quibbler a sensational story inspired by rumors about a Half-Blood Prince. At Hogwarts, students spread increasingly wild claims about Douglas’s practical-lesson monster, and he learned of them from the Weasley Twins that evening.

• Douglas noticed his students watching him strangely after The Quibbler published a report suggesting Lockhart had been framed, and he kept treating the rumors lightly.
• Douglas anonymously sent Xenophilius Lovegood the story “Slytherin's Half-Blood Prince” and fifty Galleons, hoping it would bury the earlier scandal beneath a new rumor.
• Douglas discovered that Gryffindor, Ravenclaw, Slytherin, and Hufflepuff students had brought different tricks to pass his course, and the Hufflepuff first years cleared it fastest using Professor Sprout’s plants.
• Students spread conflicting rumors that Douglas’s practical-lesson monster targeted night-time daters, weak students, gossipers, Slytherins, or pure-bloods.
• The Weasley Twins told Douglas about the rumors that evening and sensed that he took the matter seriously.

Douglas used the Marauder's Map to watch the bathroom concealing the Chamber of Secrets, hoping to spot whoever carried the Diary, while George and Fred secretly practiced an ink-transfiguration charm. After catching the twins chatting, he reviewed their work and heard their request to move detention an hour later so they could tutor in the study rooms.

• Douglas concluded that the Diary was at school and that Voldemort's chosen target was not a younger student, then watched the Chamber of Secrets bathroom on the Marauder's Map.
• George and Fred used ink transfiguration to secretly discuss Douglas and the rumors while writing their assigned work from memory.
• Douglas caught the twins when George accidentally wrote a message about him, praised their charm, and warned them to focus more on studying.
• Douglas watched students leave the study rooms and saw no one enter or leave the girls' bathroom except ghosts, including Peeves bullying Moaning Myrtle.
• George and Fred showed Douglas their work for three subjects, then asked him to move their detention an hour later so they could tutor in the study rooms.

Douglas established rules for study room tutors, approved the Weasley Twins’ applications, and installed an alarm at the entrance to the Chamber of Secrets. At breakfast, Snape criticized Douglas’s lesson before a stack of magazines arrived and students began mocking Snape as the Half-Blood Prince.

• Douglas and Professor McGonagall set tutor qualifications, ratings, and penalties for the study rooms.
• Douglas postponed the Weasley Twins’ detention, tested their spells, and signed their tutor applications.
• Douglas used the Marauder’s Map to check the castle, then secretly installed a detector in the basin leading to the Chamber of Secrets.
• Snape accused Douglas of letting a monster roam the castle, while McGonagall explained that the creature could not move without Douglas nearby.
• McGonagall, Sprout, and Flitwick praised their contributions to Douglas’s lesson, and Snape left after insulting Douglas’s teaching and Potions knowledge.
• A witch distributed magazines in the Great Hall, and Gryffindor students mocked Snape as the Half-Blood Prince.

Students across Hogwarts read and discussed a story about John Prince, while Ravenclaw student Tom Cruise began to suspect that the old diary he had found was connected to the book’s sealing magic. He asked the diary’s Tom Riddle whether he was part of someone sealed inside it, but received no reply.

• Harry and Ron joked about Harry being called the Half-Blood Prince after Colin pointed out that Harry was half-blood.
• Students from all four houses finished the story and reacted with satisfaction to John’s fate, while many admired his romantic exploits and sought copies of the magazine.
• Tom Cruise took out the fifty-year-old diary bearing the name Tom Riddle and recalled finding it in a secondhand bookshop.
• Tom remembered that the diary answered his writing and helped him with spells, then connected it to the book’s account of someone sealed inside a diary.
• Tom wrote to the diary asking whether Riddle was part of someone’s body sealed inside it, but no answer came.

Tom Cruise confronted the diary’s Tom Riddle with the story of the Half-Blood Prince, prompting Voldemort to investigate the account while disguising his intentions. Meanwhile, Xenophilius Lovegood received a cryptic letter, and at Hogwarts Snape overheard students discussing the Half-Blood Prince.

• Tom Cruise accused the diary’s occupant of being John Prince, but Voldemort denied understanding the story and offered to teach him a powerful spell for information.
• Tom Cruise recounted the story, and Voldemort realized the diary contained only his memories from before age sixteen and that he did not know the later Horcruxes.
• Tom Cruise woke exhausted beside an open copy of The Quibbler and accused Voldemort of using the Imperius Curse, so Voldemort apologized and tried to persuade him that he was an enchanted learning aid.
• Xenophilius Lovegood received a Hogwarts letter asking whether he remembered Tom Marvolo Riddle, but he dismissed his inability to remember the name as the work of Wrackspurts.
• Douglas noticed Snape heading to the Great Hall and hurried there; Snape overheard students say “the Half-Blood Prince,” and they tried to hide their magazine.

Snape confiscated the magazine and spent the day in an unusually foul mood, while Ron speculated that Snape was the Half-Blood Prince and Professor Holmes had written the magazine piece. After students gathered to race using their new spells, Draco Malfoy unleashed a real snake among the crowd.

• Snape confiscated a magazine from a student, ordered him to copy the Potions safety regulations, and hurried from the Great Hall after reading it.
• Ron guessed that Snape might be the Half-Blood Prince and Professor Holmes the magazine's true author, but his friends dismissed the idea.
• Snape ignored Harry throughout their final Potions lesson, despite his bad mood affecting students in every house.
• After students showed off their spells in the castle, Professor McGonagall banned using them in crowded places and corridors.
• George and Fred suggested a race on the grassy slope, where Lee Jordan commentated as Gryffindor students competed with Serpentine Speed Skating.
• Draco Malfoy secretly cast Serpensortia and sent a real snake slithering toward the crowd.

A real snake disrupted the Gryffindors’ Serpentine Speed Skating race, and Hermione organized the younger students as they drove it off with spells. The Gryffindors celebrated afterward, while Professor Holmes’s plans to turn the study room into a formal course remained a distant goal.

• A snake appeared during the Serpentine Speed Skating race, scattering students and causing some racers to lose control of their Transfiguration.
• Hermione ordered first-years to leave the battlefield and second- and third-years to ready their wands, and students from several houses fired spells at the snake.
• Harry skated back after the snake had been reduced to ashes, while Neville claimed his Petrificus Totalus had hit its weak spot.
• Draco and the other Slytherins left gloomily as Theodore Nott mocked Draco for summoning a snake near Hufflepuffs.
• The younger Gryffindors celebrated in the common room, where Harry ate Ron’s Hiccough Sweet and began hiccupping.
• Professor Holmes’s behind-the-scenes efforts helped spread rumors of rewards for students who earned points, though turning the study room into a formal course remained a distant goal.

Douglas’s teaching system nearly awarded him 1,000 monthly points, bringing his total to 1,899 and putting the curse-removal goal within reach. In October, Hogwarts students faced a demanding week of exams and practical lessons, while Douglas’s morning runs and Holmes’s increasingly difficult Defense Against Dark Magic training shaped their routines.

• Douglas discovered that teaching effectiveness depended on the percentage of scores above 6 and calculated that he had earned 1,899 points, leaving him about four months from reaching the curse-removal target if he improved his teaching.
• Madam Pomfrey repeatedly criticized Douglas for leading students on cold-weather morning runs, but the runners stayed healthy, and two former detainees became captains of a group that grew to sixteen voluntary members.
• Hogwarts students prepared for monthly exams: younger years studied up to Ravenclaw’s progress, fourth years took a shortened OWLs paper, fifth years faced another leaderboard round, and sixth and seventh years took practical tests.
• Slytherin displaced Ravenclaw at the top of the House Leaderboard, while students struggled with Holmes’s upgraded Inferi challenge, nonverbal spells, and the difficult light-producing spell.
• Holmes warned students not to use the special spell outside Defense Against Dark Magic lessons, and students entering the mist stage struggled with the darkness and Invisible Smoke as the busy exam week continued.

Hogwarts held its first monthly Defense Against Dark Magic exams, and Douglas prepared a seventh-year spell-dueling demonstration for the whole school. As students gathered in the Great Hall, Hermione organized Gryffindors to take notes, while Douglas recognized the beginnings of a future student resistance group.

• Harry served as Gryffindor's Potions class representative, and memorizing his textbook helped him withstand Snape's attempts to blame him for others' mistakes.
• Douglas administered the Defense Against Dark Magic exams, and Gryffindor students celebrated after learning that every sixth-year Slytherin had failed the practical exam.
• Douglas invited class representatives and a deputy to help mark the exams, using four versions of the test to expose students who had copied answers.
• The seventh-year exam became a spell-dueling demonstration in the Great Hall, attended by Dumbledore and the four Heads of House.
• Hermione organized second-year Gryffindors to take notes on the demonstration, and other students followed their example.
• Douglas told Dumbledore that Hermione's organized group resembled the beginnings of Dumbledore's Army and recognized her political potential.

Douglas explained his practical view of Defense Against Dark Magic before beginning the seventh-year exam, then used Mario Nott’s first duel to demonstrate that survival mattered more than etiquette. He left the students considering his lesson and his pointed challenge to Slytherin.

• Douglas addressed the Great Hall about dark magic, dark wizards, and the purpose of Defense Against Dark Magic, then wished his students success in the Wizarding World.
• Dumbledore announced the exam rules: seventh-years had to last five minutes against Douglas, and they could use any spell except illegal ones.
• Mario Nott stepped forward expecting a formal duel, but Douglas interrupted his salute with Expelliarmus and blasted him across the platform.
• Mario accused Douglas of launching a sneak attack, and Douglas replied that the exam was a battle and students had to subdue opponents before worrying about etiquette.
• Douglas defended speaking first by claiming that only a powerful force of justice had that right, prompting applause from Gryffindor students as the professors watched.

Douglas Holmes examined the students in duels, using varied spells and tactics to teach them that combat was not limited to Dark Magic. As he prepared to end the examination, Snape challenged him to stage an impromptu duel for the students.

• Ruth Bunier countered Douglas's Relashio by tossing his wand away, then attacked with Avis, but Douglas silently bound him with a rope and disarmed him.
• A Gryffindor tried a guerrilla strategy with a Blasting Curse, stone cover, and spells, but Douglas transformed stones into African hyenas and turned the ground beneath him into a swamp.
• Douglas finished examining the students and explained that opponents could use many branches of magic, so a Dark Wizard was not necessarily a master of Dark Magic.
• Harry studied his notes on Douglas's spells, while Hermione advised him to ask Douglas about learning the Disarming Charm during detention.
• Snape proposed an impromptu duel and asked Douglas to show the students what a wizard's duel looked like.

Douglas and Snape dueled before the Hogwarts students, trading spells until each bound the other and they agreed to end the contest without a winner. Snape left claiming defeat, but the duel quietly eased the awkwardness between them and established an unspoken understanding.

• Dumbledore approved Douglas and Snape’s duel as a demonstration, and they began by trading quick attacks and defenses.
• Douglas and Snape exchanged humiliating jinxes before Snape bound Douglas with ropes and Douglas trapped Snape in an electrified binding spell.
• Douglas proposed they end the duel as neither a win nor a loss, and both broke free of their bindings at the same time.
• Douglas offered Snape a hand, and Snape accepted before announcing that he had lost and leaving the Great Hall.
• The students debated the outcome while Dumbledore and the Heads of House recognized that the duel had quietly eased the tension between Douglas and Snape.

After exam week, Hogwarts students adjusted to new classes and Douglas's expanding morning runs while Harry struggled to balance Quidditch training with detention. Near Halloween, Nearly Headless Nick worried over his rejection from the Headless Hunt, and Harry left him with a suggestion before hurrying to Professor Holmes's office.

• Harry negotiated with Professor McGonagall to pause his orchard-work detention so he could train for Quidditch, while Ron threatened to make him repay the missed work if Gryffindor lost the championship.
• Douglas's morning runs grew into three groups after a Slytherin student successfully cast a modified Lumos, and five first-year Gryffindors were caught by Filch after sneaking out to hunt a rumored monster.
• Harry returned soaked from Quidditch practice and encountered Nearly Headless Nick, who was upset that the Headless Hunt had rejected him because his beheading was not complete enough.
• Harry suggested that Nick ask Professor Holmes to separate his head from his body, then hurried away to detention without noticing Filch arriving behind him.
• Nick begged Harry not to tell Professor Holmes about the suggestion and stayed silent when Filch asked whether Harry had just passed.

At the Halloween Feast, Douglas realized the Basilisk might strike that night and rushed to investigate after an alarm sounded through Hogwarts. Meanwhile, Ron and two other students attended Sir Nicholas’s Deathday Party and learned Peeves believed the ghosts had invited students to protect themselves from the Demon King.

• Hagrid told Douglas that a second rooster had died and asked him to help protect the chicken coop, making Douglas suspect the Basilisk was about to act.
• Douglas enchanted the pumpkins to cackle and fly around the Great Hall, and Professor Flitwick made the candle flames dance.
• A piercing alarm rang through Hogwarts, and Douglas told Dumbledore and Professor McGonagall to keep the students in the Great Hall before he ran toward the stairs.
• Dumbledore, Professor McGonagall, and Professor Snape followed Douglas while other staff remained with the students.
• At Sir Nicholas’s Deathday Party, Ron and the other living guests found the ghostly feast revolting and heard Peeves claim the ghosts had invited students because they feared the Demon King.

Douglas rushed to the girls’ bathroom after his detection device alerted him, and told Dumbledore, McGonagall, and Snape that the Chamber of Secrets was likely hidden there and connected to Voldemort. He backed his claims with a mixture of real clues and invented deductions, leaving the others convinced that Voldemort or a follower might be in the castle.

• Douglas ran to the bathroom and found it empty, then showed Dumbledore, McGonagall, and Snape the snake-marked tap and his detection device.
• Douglas claimed he had deduced that the bathroom contained the Chamber of Secrets, that Voldemort was Slytherin’s heir, and that a basilisk lived inside.
• McGonagall questioned why Douglas had entered a girls’ bathroom as a student, and Douglas gave a vague explanation that Snape tacitly accepted.
• Dumbledore guessed that Douglas had installed the alarm because he knew Voldemort was alive and feared he would enter Hogwarts; Douglas said he had taken precautions after becoming Defense Against Dark Magic professor.
• Douglas said Hagrid’s chickens had been killed twice and that a rooster’s crow could drive away a basilisk, leading him to suspect Voldemort, a follower, or Slytherin’s heir was responsible.

Douglas traced the intruder’s escape from the girls’ bathroom and helped the professors identify students who had missed or left the Halloween Feast. The clues pointed toward a student being controlled by Tom Riddle, while Dumbledore and the Heads of House headed out to investigate.

• Douglas used a trace-detecting spell to find footprints leading from the Chamber of Secrets bathroom to a window, then copied a footprint for comparison.
• Douglas explained that the intruder was likely a teenage student and that the professors should check who had missed or left the feast; the professors set traps and detection spells in the bathroom.
• Dumbledore praised Douglas’s discovery, and the Heads of House ordered their Prefects to list students absent from the feast or arriving and leaving partway through.
• In Ravenclaw Tower, Tom Cruise confronted Tom Riddle in the Diary, and Riddle warned that Dumbledore and Douglas would find him unless Tom followed his instructions.
• Harry, Ron, and Hermione returned to the Great Hall with Percy; Douglas ruled them out and compared the Hufflepuff students’ footprints against the copied impression.
• Douglas said the whereabouts of several students were unclear, so Dumbledore led the Heads of House and Douglas to investigate while staff and prefects watched the Great Hall.

After a disturbance at Professor Holmes’s office, Douglas and the professors questioned Slytherin students while searching for the intruder. A Slytherin seventh-year admitted she had been outside the Common Room, but the search moved on to Hufflepuff, leaving the intruder’s whereabouts unknown.

• Harry and Ron described the disturbance, while students speculated that a Slytherin had entered Professor Holmes’s office; Percy distracted them from questioning Fred and George.
• Penelope guessed that the incident involved Moaning Myrtle’s Bathroom, and Percy told her Professor Holmes had warned him to alert Dumbledore if anything happened there.
• Snape, Dumbledore, Douglas, and the other professors searched the Slytherin Common Room and questioned its students about who had come and gone.
• Douglas bluffed that Smithsley had dust on her back, prompting her to admit she had recently returned from outside after her boyfriend broke up with her.
• The professors took the Slytherin students to the Great Hall and went with Sprout to search the Hufflepuff Common Room.

The professors investigated a footprint found in Moaning Myrtle’s Bathroom and discovered it matched Ravenclaw student Tom Cruise’s shoe, though Tom insisted he had never left his dormitory. As Douglas suspected the boy’s illness and the evidence pointed to something more sinister, Snape asked Tom whether he had heard of Tom Marvolo Riddle.

• After leaving the Hufflepuff Common Room, the professors went to Ravenclaw Tower to compare students’ footprints with the one found in the bathroom.
• Professor Flitwick discovered that Tom Cruise was missing from the common room, and a student recalled hearing the door open twice.
• When Snape suggested Polyjuice Potion, Douglas asked whether any potion supplies had been stolen and proposed checking footprints across the school first.
• The professors found Tom Cruise ill in his dormitory, where his shoe matched the bathroom footprint exactly.
• Tom denied visiting the bathroom, and Dumbledore believed he was telling the truth, but Douglas remained suspicious of his illness.
• Snape asked Tom whether he had heard of Tom Marvolo Riddle.

Douglas used Tom Cruise’s wand to uncover memory-modification magic and a unique Dark spell, leading Dumbledore and Snape to conclude Voldemort had been hiding at Hogwarts in a magical object. The chapter ended with Dumbledore revealing that he had searched the dormitory and found no Dark magical objects, then asking Douglas whether he knew something he had not shared.

• Douglas suspected Tom Cruise’s memories had been altered and used Prior Incantato on his wand, revealing repeated Lumos spells, memory magic, and an unfamiliar Dark spell.
• Dumbledore sent Professor McGonagall and Professor Flitwick to take Tom Cruise to the Hospital Wing and escort the students away, while Douglas warned them to search for books and other objects.
• Snape identified the Dark spell as unique to Voldemort, and Dumbledore said it allowed flight and that Tom Cruise appeared to have had his life force drained.
• Douglas, Snape, and Dumbledore reasoned that Voldemort had likely hidden in a magical object and altered Tom Cruise’s memories to avoid discovery.
• Dumbledore said he had already searched the dormitory and found no Dark magical objects, then asked Douglas if he had withheld important information.

Douglas tried to convince Dumbledore and Snape that Lucius Malfoy had hidden a dangerous object among ordinary belongings, but they dismissed his theory and left him to search for clues. Outside the common room, Dumbledore and Snape suspected Douglas knew more than he admitted, while Dumbledore decided to give him room to act.

• Douglas connected Lucius Malfoy's Knockturn Alley visit, Dobby's warning to Harry, and Mr. Cruz's old belongings to propose that a dangerous object had been disguised as an ordinary item.
• Snape argued that the events could be explained by the Imperius Curse, while Dumbledore doubted that the Chamber of Secrets had actually been opened; both men left to investigate other leads.
• Douglas searched the dormitory for the diary, worried that Dumbledore and Snape might already know about it.
• Outside Ravenclaw's entrance, Dumbledore and Snape discussed whether Douglas knew Tom's identity and whether he had written an article that exposed the Malfoy family.
• Dumbledore said he suspected the article came from an old friend and chose to trust Douglas to handle the danger, while Snape questioned whether Douglas could protect Hogwarts.
• Douglas searched the Ravenclaw Common Room, unaware that Dumbledore had considered cultivating him after receiving information from Ollivander.