Chapter Summaries

Dumbledore told Snape that Quirrell was under suspicion and asked him to keep watch while Dumbledore tried to draw out the person behind him. Over the weekend, Vizet helped his dormmates with their homework and sought books on Animagi, leaving Madam Pince warning him that the subject could be dangerous.

• Dumbledore explained to Snape that he wanted to guide Vizet and asked Snape to keep an eye on Quirrell.
• Snape challenged Dumbledore's plan to expose Quirrell, worried about Harry Potter's safety, then left the Headmaster's Office.
• Vizet's dormmates joined him for breakfast and asked for help finding sources for their homework.
• Vizet agreed to go to the library with his dormmates before attending the Quidditch tryouts to cheer on Cho Chang.
• Vizet directed his dormmates to useful magazines and asked Madam Pince where to find books about Animagi, but she warned him that the subject could be dangerous.

Vizet visited the library to research Animagi for Professor McGonagall and discovered the book Metamorphic Transfiguration Theory. After learning a new Ancient Magic ability and experimenting with Transfiguration, he was interrupted by Anthony, who urged him to hurry to the Great Hall and Quidditch tryouts.

• Vizet told Madam Pince that Professor McGonagall had asked him to research Animagi, and Madam Pince directed him to Metamorphic Transfiguration Theory.
• As Vizet explored the library, he absorbed Ancient Magic Power and learned Throwing Mastery, which let him infuse thrown objects with Ancient Magic Power.
• Vizet found Metamorphic Transfiguration Theory and read its prologue and annotations, which deepened his understanding of Transfiguration and suggested a personal path for him.
• Vizet transformed a strand of hair into a leaf-shaped bookmark and tried to make it become a real leaf, causing it to grow a branch and leaves.
• Anthony shook Vizet out of his concentration and urged him to get food in the Great Hall before watching the Quidditch tryouts.

Vizet practiced Transfiguration on the way to the Quidditch Pitch, where Anthony and Michael explained the game before they joined Cho Chang at the Ravenclaw tryouts. Cho described the team’s vacancies and the demanding broomstick tests, while her own preferred-position tryout had yet to begin.

• Vizet turned grass into primroses with Transfiguration and offered Anthony his notes on Metamorphic Transfiguration Theory.
• Anthony and Michael explained Quidditch’s players, balls, and scoring to Vizet as they walked to the Pitch.
• Cho Chang called Vizet over at the tryouts, and Anthony and Michael shyly greeted her.
• Cho told Vizet that Ravenclaw had vacancies across several positions and that twenty candidates had already been eliminated by broomstick drills.

Vizet watched Ravenclaw’s Quidditch tryouts and learned that Cho Chang had won the Seeker position. Professor Flitwick invited Vizet to try out despite the second-year rule, and Vizet prepared to demonstrate his flying ability to Captain Arsenal.

• Vizet watched the Beater tryouts, where Jansen Samuels and Duncan Inglebee earned the positions despite several candidates being injured or frightened away.
• Oliver Wood praised Cho Chang’s flying and tried to recruit Vizet to Gryffindor, but Vizet said he was happy in Ravenclaw.
• Cho Chang won the Seeker position after impressing the judges with her speed, observation, and reactions.
• Professor Flitwick invited Vizet to join the tryouts, explaining that the second-year restriction could be waived, and Vizet agreed.
• Professor Flitwick brought Vizet to meet Captain Arsenal, who challenged him to show his flying ability.

Vizet joined Ravenclaw’s Quidditch team as a Chaser and stunned the team with his speed and scoring during training. The team ended the session confident that they could trust him in the coming season.

• Vizet passed the first selection round with ease and asked to play as a Chaser.
• Arsenal told Roger about Vizet’s flying ability, and Roger added him to the team’s training session.
• Arsenal made Vizet the focus of practice, with players attacking him using the Quaffle and Bludgers.
• Vizet dodged Roger’s Bludger at high speed, then used Ancient Magic: Throwing Mastery to score past Arsenal.
• Flitwick praised Vizet, while the team gained confidence in him and continued training.

After joining the Ravenclaw Quidditch Team as a Chaser, Vizet improved his Healing Charm and learned that Harry and Ron had encountered a Three-Headed Dog guarding a trapdoor. He sent them to the library to find a potion journal to help with their homework.

• Roger introduced Vizet to Ravenclaw students as a top-tier Chaser, and they shared notes and advice with him.
• Vizet combined the notes to master the Healing Charm and practiced it on Quidditch players.
• Fred and George asked Vizet about becoming a Chaser and complained about Oliver Wood's punishing training plans.
• Harry and Ron told Vizet that Malfoy had tricked them into a midnight duel, leading them to encounter a Three-Headed Dog in the Forbidden Corridor.
• Harry told Vizet that the dog guarded a package he had retrieved from Gringotts with Hagrid, and Vizet advised the boys to complete their homework by reading an issue of Practical Potion Master.

Vizet explained to Hermione why her blunt advice had alienated Harry and Ron, then attended Quirrell’s Defence Against the Dark Arts class. His question about the Snot Curse revealed that it had once been a lethal Killing Curse, leaving the class startled.

• Vizet realized Hagrid’s nervousness about Fluffy might be connected to the creature guarding a treasure behind a trapdoor, but decided it was none of his concern.
• Hermione accused Vizet of letting Harry and Ron copy his homework, and he explained that he had only answered their questions.
• Vizet imitated Hermione’s lecturing tone to show her how it felt to be criticized, then left the library to explore the castle and search for Ancient Magic Power.
• In Defence Against the Dark Arts, Vizet asked Quirrell about the Snot Curse’s original power after learning it had been weakened.
• Quirrell revealed that the Snot Curse had originally been a plague-inspired Killing Curse, drawing the students’ attention.

Professor Quirrell lured Vizet into a private lesson after Voldemort ordered him to teach the boy the Affliction Curse. As Quirrell began explaining the curse, Voldemort revealed that he intended to draw out Vizet’s potential and make him a suitable vessel.

• Vizet listened closely as Professor Quirrell explained the Snot Curse, then accepted an invitation to study more magic in Quirrell’s office.
• Quirrell removed his turban and revealed Voldemort attached to the back of his head, then reported that he had drawn Vizet’s interest and invited him to a lesson.
• Voldemort told Quirrell to teach Vizet the Affliction Curse and to keep investigating how to enter the room on the Fourth Floor.
• Voldemort forced knowledge of the Affliction Curse into Quirrell, who collapsed unconscious as Voldemort described Vizet as an Obscurial he hoped to turn into a vessel.
• Vizet arrived at Quirrell’s office at noon, and Quirrell began teaching him about Compound Magic using the Affliction Curse as an example.

Vizet learned the principles of Compound Magic and the Affliction Curse from Quirrell, who recommended books and assigned him a practice task. After Vizet left, Voldemort rebuked Quirrell for not pushing him to cast the curse and ordered him to keep investigating Vizet, Harry Potter, and the room on the Fourth Floor.

• Quirrell explained Counter-Curses and Compound Magic, then taught Vizet that the Affliction Curse linked evil curses and Poison Curses together.
• Quirrell gave Vizet a signed note to access three books in the Restricted Section and asked him to arrange the curses into a smooth phrase as an assignment.
• Voldemort awakened during the lesson, and Quirrell sent Vizet away after setting their next meeting for Saturday afternoon.
• Voldemort scolded Quirrell for teaching Vizet the theory instead of making him cast the Affliction Curse as soon as possible.
• Voldemort ordered Quirrell to continue observing Vizet and Harry Potter and to investigate the room on the Fourth Floor.

Snape questioned Vizet about his visit to Quirrell and tested what he had learned about Compound Magic. After reporting to Dumbledore that Quirrell had taught Vizet cautiously, Snape agreed to teach him at his office on Sunday.

• Snape confronted Vizet about visiting Quirrell, and Vizet explained that he had studied Compound Magic theory and learned the Affliction Curse.
• Snape pressed Vizet about anything unusual about Quirrell, and Vizet mentioned the strange fishy smell in his room and the chill he had felt there.
• Snape asked Vizet to demonstrate the Affliction Curse, but Vizet clarified that Quirrell had only taught him theory and the role of counter-curses.
• Snape invited Vizet to his office on Sunday afternoon to learn more, and Vizet happily accepted.
• Snape reported to Dumbledore that Quirrell had taught Vizet step by step, then said he would teach Vizet himself.

Dumbledore asked Quirrell to help protect the valuable item hidden in the Forbidden Corridor and warned him not to let Vizet’s Obscurus harm him. Quirrell resisted Voldemort’s plan to use Vizet as bait, then helped Vizet test his newly devised curse.

• Dumbledore told Quirrell that someone sought the item in the Forbidden Corridor and asked him to add a protective measure before November.
• Dumbledore explained that Vizet was an Obscurial and urged Quirrell to keep Dark magic from eroding him.
• Quirrell told Voldemort about Dumbledore’s request, and Voldemort planned to cause a Halloween incident with a Troll and use Vizet as bait.
• Quirrell refused to use Vizet as bait, but Voldemort taught him an ancient magic to create the accident and mocked his concern for students after Quirrell passed out.
• Vizet visited Quirrell’s office and tested his self-created Entangled Illness curse on a venomous snake, causing its skin to ulcerate.
• Quirrell praised Vizet’s spell structure, restored the snake, and began teaching him the Affliction Curse incantation.

Vizet learned to cast the Affliction Curse from Quirrell, whose guidance revealed that Vizet’s Obscurus amplified Dark Magic and stirred up malicious thoughts. He then began practical ingredient-processing lessons with Snape, who assigned him to prepare dragon organs and taught him to preserve materials with a Magical Energy Field.

• Quirrell taught Vizet about careful pronunciation and concentration when casting spells, especially Dark Magic.
• Vizet cast Die Sick Torment on a viper, turning it into slime as the Obscurus Core stirred and unleashed malicious thoughts.
• Quirrell warned Vizet that the Obscurus was both a talent and a curse, and advised him to avoid imagining a specific scene when casting or to learn Occlumency.
• Vizet tried the Affliction Curse without imagining a scene, weakening its effect, while Quirrell continued teaching him about Compound Magic.
• Vizet arrived at Snape’s office on Sunday afternoon, where Snape showed him a Magical Energy Field and told him to learn how to maintain it.
• Snape ordered Vizet to process dragon organs and criticized his handling of the liver, kidney, and heart.

Vizet created a Compound Magic spell while cleaning Dragon's Blood, then improved it into magic that could cleanse external filth and wash the soul. He used it to remove a harmful effect from his Obscurus Core and named the spell the Purifying Cleansing Soul Washing Spell.

• Snape taught Vizet advanced Potions techniques while Vizet processed Dragon's Innards, but the Dragon's Blood resisted his cleaning spells.
• Vizet used Guardian Meditation to combine the Scouring Charm and Scab Removal Charm, creating a spell that removed the bloodstains from his robes and the floor.
• Snape praised Vizet's frightening talent after Vizet left his office to dispose of the waste.
• Vizet improved his Compound Magic spell with Ancient Magic Power, producing magic that could cleanse filth and wash the internal soul.
• Vizet cast the improved spell on himself, and it drew black-and-red mist from his Obscurus Core, easing his heart palpitations and evil thoughts.
• Vizet named the new magic the Purifying Cleansing Soul Washing Spell.

Vizet celebrated Halloween at Hogwarts, where he continued his studies and saw Ron and Hermione argue during Charms. After Hermione skipped several classes, Ron and Harry sought Vizet’s help finding her, and Ron asked what Hermione had said about him.

• Vizet wrote to Luna and Mr. Lovegood about Halloween traditions and his hopes for an adventure to write about.
• Vizet reflected on his lessons with Quirrell and Snape before seeing Hogwarts decorated for Halloween.
• In Charms class, Vizet mastered the Levitation Charm while Hermione successfully cast it after arguing with Ron.
• After class, Ron asked Vizet if he had seen Hermione, and Harry explained that she had been crying and missed several lessons.
• Vizet told Ron that Hermione had mentioned him, and Ron asked what she had said.

Vizet helped Fred and George improve the ingredients for a gold firework in their hidden workshop. Meanwhile, Voldemort forced Quirrell to cast a spell on the imprisoned Troll, setting its escape in motion.

• Vizet told Ron and Harry that Hermione had cared about them and advised them to apologize to her.
• Fred and George invited Vizet to be their materials consultant and led him to a concealed workshop.
• Vizet advised Fred and George to use Mimosa Flower roots and Valerian Juice to make their firework gold and keep its color bright.
• Voldemort pressured Quirrell to open his soul and cast magic at the Troll in the dungeon.
• Quirrell cast Voldemort's spell, and the Troll convulsed violently.

At the Halloween Feast, Professor Quirrell announced that a Troll was loose in the school, sending Hogwarts into a panic. While the prefects evacuated students, Harry and Ron went to look for Hermione, and Snape confronted Quirrell near the Third Floor Corridor as Quirrell pursued Voldemort’s command.

• Harry and Ron arrived late at the feast, and Percy told them Hermione was crying in a Girls' Bathroom.
• Quirrell burst into the Great Hall and warned everyone that a Troll was in the Underground Classroom before collapsing.
• Dumbledore ordered the prefects to escort students to their common rooms and sent Snape to investigate.
• Percy discovered Harry and Ron were missing, while Penelope reported that Vizet had also disappeared.
• Quirrell secretly left the Great Hall and headed for the Third Floor Corridor, where Snape confronted him.
• Quirrell attacked Snape with Oppugno after Snape blocked his attempt to leave.

Snape and Quirrell fought, and Snape wounded Quirrell before learning that a Troll was targeting Vizet. Quirrell rushed downstairs to stop Vizet from fighting it, and Snape followed.

• Snape dispelled Quirrell's glowing birds, but Quirrell secretly reignited them and set the door aflame, releasing the Three-Headed Dog.
• The Three-Headed Dog bit Snape's calf, and Quirrell fled after discovering it was inside Hogwarts.
• Snape drove the dog back into its room, then struck Quirrell with Sectumsempra through his protective spells.
• Quirrell claimed his Wand had backfired, while Snape held back from attacking him further because he feared the consequences of provoking Voldemort and the Ministry.
• After hearing that a Troll was targeting Vizet, Quirrell warned that the child's fight could unleash the Obscurus, and Snape let him go before following downstairs.

Vizet, Fred, and George encountered a Troll in the Hogwarts corridors and fought it with their improved fireworks and spells. After Vizet stopped the Troll’s thrown club, he used Ancient Magic to hurl it back at the creature, leaving the fight unresolved.

• Fred and George tested their fireworks, credited Vizet for improving them, and added his name to their patent application.
• Vizet, Fred, and George found the Great Hall empty, then saw Hermione, Ron, and Harry fleeing from a Troll.
• Fred and George’s fireworks knocked the Troll down and buried it beneath rubble, but it rose and struck at Fred.
• Vizet pulled Fred clear with an Improved Summoning Charm, while George’s Stupefy had little effect on the Troll.
• The Troll threw its wooden stick at Vizet, who halted it with Wingardium Leviosa and launched it back using Ancient Magic: Throwing Mastery.

Vizet used the Affliction Curse to dissolve the Troll, but the spell stirred the Obscurus and left him weak until he cleared its malice. The students gathered in the Great Hall as Dumbledore and the professors arrived, with Penelope concerned about Vizet’s condition.

• Vizet smashed the Troll’s head with a levitated wooden stick, and Fred and George celebrated before remembering Ron, Hermione, and Harry were trapped in the wall.
• The headless Troll rose and charged at Vizet, while Fred and George’s spells failed to stop it and the Troll knocked them unconscious.
• Vizet cast Die Sick Torment at the Troll’s exposed neck, dissolving its body into foul green slime and triggering a surge of malice from the Obscurus Core.
• Fred and George supported Vizet, and he used Guardian Meditation and Dust and Grime Begone to regain his composure and clear the malice.
• Dumbledore and four professors arrived in the Great Hall, where Fred and George guarded bottles of slime, Hermione, Harry, and Ron stood ready for criticism, and Penelope asked if Vizet needed the Hospital Wing.

After the Halloween Troll attack, McGonagall questioned Harry, Ron, Hermione, Fred, George, and Vizet about why they had been outside their common rooms. The students avoided severe punishment and were sent off to rest, with Fred and George thanking Vizet for saving them.

• McGonagall reprimanded Harry, Ron, and Hermione for staying out after the evacuation, and Harry struggled to explain why they had been looking for Hermione.
• Hermione blamed herself for confronting the Troll, but Ron confessed that he had insulted her and accepted responsibility; Harry and Hermione pleaded for him not to be expelled.
• McGonagall deducted thirty points from Gryffindor and ordered Percy to escort Harry, Ron, and Hermione back to their common room.
• Dumbledore questioned Fred and George about their encounter with the Troll, and they claimed they had been delayed while seeking Potions advice from Vizet.
• Snape vouched for Vizet's skill, and Dumbledore called the incident an accident and dismissed everyone to rest.
• Fred and George rushed away carrying their bottle of green slime and called back to thank Vizet for saving their lives.