Chapter Summaries

Vizet and Luna turned the Mystic Corridor into a furnished secret base, with help from the Weasley twins, Filch, and the House-elves. After finishing the new living space, Vizet and Luna enjoyed tea and preserved fruit together.

• Dumbledore told Snape that Minerva and Filius had joined the enthusiastic group, and Snape left the Headmaster's Office in displeasure.
• Vizet and Luna continued decorating the Mystic Corridor, arranging its areas and building partitions and furniture from planks borrowed from Hagrid.
• The Weasley twins were astonished when Filch helped carry planks and asked Vizet to add a Levitation Charm to his Fake Wand.
• Luna decorated the Corridor with a constellation tapestry, an astrolabe, and furnishings gathered with help from Hanna and the House-elves.
• Vizet and Luna admired the completed living space, brewed tea, and shared biscuits, cakes, and honey-soaked Dirigible Plum.

Vizet studied Weather Charms and prepared a Mandrake leaf for the second full moon, while Snape arranged to examine Vizet’s memories with the Pensieve. With the professors and Hagrid guarding the grounds against clouds, Vizet exposed the transformed leaf to moonlight.

• Professor Flitwick taught Vizet the Sunny Skies Charm, which Vizet used to bring sunlight into the Mystic Corridor for Luna’s plants.
• Vizet prepared for the second full moon by inscribing several spells into his Mandrake leaf and bringing notes about juvenile Mandrake leaves to Snape.
• Snape asked Vizet to show him the memories connected to his Animagus research, and Vizet used the Memory Extraction Charm in Snape’s office.
• Dumbledore discussed Snape’s request for the Pensieve with Fawkes and suggested the full moon might help Vizet confront unpleasant memories.
• Hagrid, Dumbledore, McGonagall, Flitwick, and Snape gathered on the grounds to keep the sky clear as Vizet exposed his transformed Mandrake leaf to moonlight.

Vizet began preparing for his Animagus experiment while Hagrid revealed that their destination was James’s secret storehouse and reminisced about Harry’s parents and their friends. They entered the hidden room, where Hagrid found it empty.

• Snape examined Vizet’s Mandrake leaf and left after confirming it was interesting, while the professors discussed Vizet’s Weather Charm practice and the experiment’s preparations.
• Hagrid told Vizet that the buried potion was connected to James’s secret storehouse and asked him not to tell Harry and the others.
• Hagrid reminisced about James, Lily, Sirius Black, Lupin, and Peter, then wondered whether magic could keep him from accidentally revealing memories.
• Vizet tapped the rhythm that opened the drum-set painting, and Hagrid squeezed through the passage into the secret room.
• Hagrid looked around the secret room and exclaimed that it was empty.

Vizet tried to create a magical lock that would keep Hagrid from revealing painful memories about James Potter while preserving them. He began the spell, but the chapter ended before he could confirm whether it had worked.

• Hagrid told Vizet he wanted to find the Animagus Notes and worried that he sometimes let secrets slip.
• Vizet offered to lock away memories Hagrid wished to keep private, warning that he would see them himself.
• Hagrid agreed and chose the keyword “James before dating Lily,” asking Vizet not to tell Harry what he saw.
• Vizet used Ancient Magic Power to get his spell through Hagrid’s naturally magic-resistant skin, then found that the keyword covered an imprecise range of memories.
• Hagrid asked whether the spell was finished, saying he had felt nothing.

Vizet searched Hagrid’s memories for moments involving James and Snape, uncovering a confrontation between the two at Hogwarts. The memory ended with Snape and James exchanging spells as Moony shielded James and Padfoot watched.

• Hagrid gave Vizet the keyword that James and Snape did not get along, narrowing the memory search.
• Vizet found Hagrid walking a pack of Norberts and then followed the sounds of James, Padfoot, Moony, and a short boy confronting young Snape.
• James accused Snape of making a potion explode in Potions Class, while Snape blamed James for a lump of glue in the corridor.
• James raised his wand, but Snape cast a Tongue-Tying Curse and stuck James’s tongue to the roof of his mouth.
• James charged at Snape as Snape cast Riddikulus and sent sword-like spells through the fallen leaves.
• Moony cast Protego to shield James from the sword-light, while Padfoot encouraged the fight to continue.

Young Snape disarmed James and taunted him until Hagrid and Lily arrived, then left with Lily. After Moony lifted the spell preventing James from speaking, James and his friends discussed Snape and James's failed attempt to confront him.

• Wormtail accidentally set the dry grass and leaves around James on fire, and Padfoot doused them with water.
• Young Snape disarmed James, took his wand, and threatened to break it while mocking James and his friends.
• Moony urged Snape to stop, but the group held back because Snape was bending James's wand.
• Hagrid and Lily arrived, and Lily asked Snape what James and the others had done to him.
• Snape dropped James's wand and left with Lily, while Moony used Finite Incantatem to let James speak again.
• James complained that Snape had beaten him and said he wanted to become a stag and ram Snape away from Lily.

Vizet watched Hagrid’s memory of James and a badly injured young Snape after a violent encounter near the Whomping Willow. Dumbledore concealed what happened, punished James and the others with detention, and left the memory’s secret unresolved.

• Vizet examined Hagrid’s memories and saw young Snape badly wounded beside an injured James.
• James admitted to Dumbledore that he had hurt Snape, while Snape accused James and Sirius Black of being involved.
• Dumbledore offered to publicly explain the incident and expel Sirius Black, or keep it secret and give James and the others a month of detention.
• Snape and James both rejected the public announcement, so Dumbledore forbade anyone from discussing the night and arranged for Madam Pomfrey to treat Snape.
• Snape ran toward the castle, where Lily was waiting, and James returned to the Whomping Willow after telling Hagrid to keep quiet.

After sealing Hagrid’s memories about how he found Snape at the Whomping Willow, Vizet reflected on the injustice Snape had suffered and rushed to seek Dumbledore. He reached the Headmaster’s Office, but when nobody answered, he wondered whether Hagrid’s memories had influenced him.

• Vizet completed a basic Secret-Keeping Charm on Hagrid and learned that Hagrid had found Snape at the Whomping Willow.
• Hagrid tested the charm by trying to answer Vizet’s question, but the secret slipped from his mind before he could reveal it.
• On his way to Ravenclaw Tower, Vizet reflected on Snape’s bullying, James saving him, Padfoot endangering him, and Dumbledore’s role in forcing Snape to accept the outcome.
• Vizet rejected the Ravenclaw Tower riddle’s suggestion that he endure in silence and ran to the Headmaster’s Office.
• Vizet guessed the password Toffee Fingers, entered the office stairwell, and knocked, but when Dumbledore did not answer, he wondered whether Hagrid’s memories had influenced him.

Vizet traced the resentment he absorbed from Hagrid’s memories to Hagrid’s own buried feelings, then used Mental Magic and Ancient Magic Power to remove them. The process gave him two new offensive Ancient Magics, and he left the Headmaster’s Office to return to Ravenclaw Tower and plan further study.

• Vizet realized that contact with Hagrid’s memories had transferred Hagrid’s accumulated resentment onto him, rather than the resentment originating with Snape.
• Vizet used Mental Magic, Ancient Magic Power from the Obscurus Core, and Ancient Magic Power brewed by time to strip the resentment from himself.
• The Wizard Combat Guide absorbed the emotion and released Magical Understanding, which Vizet used to improve his Mental Magic.
• The Wizard Combat Guide gained “Ancient Magic: Blasting Curse” and “Ancient Magic: Potent Blasting Curse,” each with an additional effect after striking an enemy.
• Vizet found no response when he knocked on the Headmaster’s Office door, then headed back to Ravenclaw Tower and wrote down goals for studying emotions and Mental Magic.

As October brought damp cold and a flu outbreak to Hogwarts, Snape brewed Invigoration Potion in unusually spicy batches and had Vizet help. Vizet proposed a sweeter alternative using honeysuckle and Echinacea infusions, and Snape approved it with changes to the brewing technique and wand motion.

• Dumbledore used Revelio to examine Vizet's casting stance, praised his ability to adjust, and fed Fawkes a berry.
• The damp chill made Slytherin students especially vulnerable to flu, while Snape continued teaching Potions and brewing Invigoration Potion.
• Seamus and Dean's potion exploded after they stirred it the wrong way, and Snape sent Hermione and Miss Pettier to take them to the Hospital Wing.
• During weekend tutoring, Vizet questioned Snape's spicy Invigoration Potion ingredients and learned Snape intended his batches for Gryffindor.
• Vizet suggested adding honeysuckle and Echinacea infusions to sweeten the concentrated potion, and Snape approved the idea with changes to the technique and wand motion.

Vizet and Professor Snape revised the Invigoration Potion formula so Vizet could add sweet herbs without ruining its effects. After Vizet used Ancient Magic to create an unusually potent concentrate, Snape explained how it could be diluted and began describing the usual rules for concentrating and diluting potions.

• Snape demonstrated how to process the Invigoration Potion's ingredients, and Vizet deduced that Pumpkin Seed could replace the toxic Kava Pepper Fruit seeds.
• Vizet reviewed his conclusions about the herbs, then worked out revised ingredient ratios with Snape's pointed guidance.
• Snape demonstrated the brewing procedure, and Vizet used Ancient Magic: Potion Balance Conversion to strengthen the potion.
• Snape questioned how many people had seen Vizet use his unusual ability, and Vizet said he had shown it to Ollivander.
• Snape stirred the potent concentrate and told Vizet to dilute it with pure water, then explained the ingredients normally required for concentrating and diluting potions.

Vizet delivered three kinds of Invigoration Potion to Madam Pomfrey and developed a fizzy Preventative Potion by diluting the sweetened potion with sparkling water and Lacewing Infusion. He then added happiness to a second batch using Ancient Magic, leaving Madam Pomfrey pleasantly puzzled by its improved taste.

• Vizet brought standard and improved Invigoration Potions to Madam Pomfrey and explained that Professor Snape had supplied one kind specifically for Gryffindor House.
• Madam Pomfrey asked about a Preventative Potion, and Vizet decided to try making one with the improved Invigoration Potion.
• Vizet diluted the potion with sparkling water made using the Water-Making Spell and added Lacewing Infusion as a stabilizer.
• Vizet and Madam Pomfrey tasted the fizzy Preventative Potion, which reminded them of Muggle soft drinks.
• Vizet added a little happiness to another batch with Ancient Magic: Potion Balance Conversion and Mental Magic, and Madam Pomfrey found it tasted better.

Luna caught a cold after sleeping near an open window, and Vizet gave her a specially improved Invigoration Potion that quickly restored her. He then shared food and a Sprite-flavored Preventative Potion with her, which they sampled together.

• Luna woke feeling ill, closed the Common Room window, and settled by the fireplace beneath her Occamy Down quilt.
• Olivia Yaxley and the other dormmates found Luna sick; Amica Miller left her a box of Chocolate Frogs.
• Vizet checked Luna for a fever, identified her symptoms as the flu, and gave her a sweetened Invigoration Potion.
• Luna drank the potion, watched its steam rise from her ears and head, and quickly recovered.
• Vizet offered Luna a Sprite-flavored Preventative Potion and food from the Hogwarts Kitchen, and they ate together while she assessed its flavor.

Vizet, Luna, Fred, and George improved Vizet’s Preventative Potion by adding a safe white-smoke effect and formed a club around their experiment. They celebrated their first operation by drinking the new potion, which sent smoke rising from their ears.

• Luna suggested that Vizet’s Preventative Potion needed a more magical effect, and Vizet realized it should produce white smoke.
• Fred and George explained that making safe white smoke was difficult, and Luna proposed using a specially designed Codd Bottle.
• Vizet described how pressing the bottle’s marble would let the potion mix with the smoke-making ingredients, while Fred and George made the required powder through Alchemy.
• Luna redesigned the bottle to resemble a Dirigible Plum, and Vizet used Transfiguration to shape it before they added the potion and powder.
• George proposed starting a club, and Fred, George, Luna, and Vizet toasted the club’s first operation by drinking the new potion.
• White smoke rose from all four of their ears after they drank the Preventative Potion.

Vizet, Luna, Fred, and George named their influenza-prevention potion Coolick and chose Magic Steam Club as the club’s name. Luna designed a moving logo for the club, which the group enlarged and hung in the Mystic Corridor.

• Fred and George competed by puffing out clouds of smoke, and Vizet shaped Luna’s smoke into a moving steam train.
• Luna suggested the potion name Coolick, and Vizet, Fred, and George agreed to it.
• Fred and George proposed a word-matching game to name the club, and Vizet and Luna said “Magic” while the twins said “Steam.”
• Luna sketched and revised a logo featuring a Dirigible Plum-shaped soda bottle, steam, and a Gothic M.
• Vizet animated the logo, and Fred and George enlarged it and hung it in the Mystic Corridor.

Vizet learned that Fred and George had studied Animagus and found an altar deep in the Forbidden Forest that might control the weather. He planned to investigate it when the weather improved and invited Luna to come with him, while promising to help her control her power.

• Vizet asked Fred and George about their Canary Cream biscuits and learned they had been training under Wood.
• Vizet told the twins he had found clues about the Marauder's Map makers and was preparing to become an Animagus.
• George fetched the Animagus Notes, which recorded James, Padfoot, and Wormtail's experiences.
• Vizet read about a weather-controlling altar in the Forbidden Forest, and Fred and George explained that its crystal-based magic array might be broken or missing materials.
• Vizet asked the twins for a route map and planned to visit the altar when the weather improved.
• Vizet invited Luna to explore the Forbidden Forest with him and promised to teach her magic to control her power.

Vizet used memories and Mental Magic to create a Magical Connection with Luna, then began teaching her an Ancient Magic spell in a shared Pensieve memory. Luna successfully pictured the Magic Circuit and spoke the incantation as Vizet guided her toward controlling Ancient Magic Power.

• Vizet proposed using a memory shared by him and Luna to establish a safe Magical Connection for teaching her Ancient Magic.
• Vizet and Luna used their first letters to create the connection, and a silver-blue vision confirmed that it had worked.
• Vizet poured a memory of the Unicorn-like white light into the Pensieve, and he and Luna entered the memory together.
• Vizet asked Luna to picture the Magic Circuit she had helped improve, and the connection let him confirm that she had imagined it.
• Luna chanted the incantation "a" as Vizet began instructing her to guide and drive Ancient Magic Power.

Vizet helped Luna practice Ancient Magic: Swift Thunder and made sure she felt well afterward. He later tested a new circuit in Filch’s Fake Wand, which appeared to greatly extend its use, and extracted Filch’s memory to investigate the effect.

• Vizet guided Luna through Ancient Magic: Swift Thunder using a Magical Connection, and she practiced until he ended the lesson.
• Vizet returned Luna to the Pensieve room and gave her Soul Soothing Potion to take to her dormitory.
• As Halloween Eve approached, Vizet stayed busy with his studies while Hagrid moved giant pumpkins into the castle and Filch cleaned up puddles with the Fake Wand.
• Vizet added a Pixie Magic Circuit to Filch’s Fake Wand, and Filch reported that it lasted at least twice as long.
• Filch agreed to let Vizet extract his memory, and Vizet used Move Spirit Remove Memory on him.

Vizet extracted Filch’s recent memories to study the effects of a magical pattern on a Fake Wand. At the Mystic Corridor, the Weasley twins revealed that Percy had been writing letters constantly and behaving strangely since summer began.

• Vizet extracted Filch’s memories from the past two days and confirmed that Filch could still remember them afterward.
• Vizet found Fred and George in the Mystic Corridor, where their fireworks accidentally ignited in water and burst into green and gold sparks.
• Fred and George explained that their Fire Salamander had flown away after they fed it fireworks.
• Fred and George recalled that Percy had been writing a letter when the Fire Salamander startled him, and said Percy had been acting strangely and writing letters nonstop.
• Vizet told the twins he was studying a magical pattern from Pixies that seemed to increase the Fake Wand’s usage time.

Vizet discussed long-term Magical Artifacts with Fred and George, then entrusted them with researching the Magic Circuit. As Halloween approached, Hagrid promoted Coolick around Hogwarts but kept its source secret, leaving Harry and Ron unable to learn how to get it as they prepared for Nearly Headless Nick's Deathday Party.

• Fred and George explained their interest in studying Mr. Filch's memories and described the Weasley family's lost techniques for making long-term Magical Artifacts.
• Vizet gave Fred and George the Magic Circuit study plan as the club's second activity.
• As Halloween approached, Hagrid carved giant pumpkins and drank Coolick, attracting curious Hufflepuffs and sparking debate among students about the drink.
• Hagrid introduced Coolick as a flavorful drink that could help prevent the flu, and it gained recognition around the school.
• Harry and Ron failed to get Hagrid to reveal how to obtain Coolick, while Hermione reminded Harry that Nearly Headless Nick had arranged the Deathday Party for them.