Chapter Summaries

Linley and Irina successfully completed their Animagus transformations, becoming a snow wolf and a little Snow Fox. Afterward, they realized they had missed Defense Against the Dark Arts class, which Snape might be teaching.

• Linley changed back from his snow wolf form and stood guard while Irina began her Animagus transformation.
• Irina endured the transformation pain and became a little Snow Fox, then leapt into Linley's arms.
• Linley stroked Irina's head and chin before she changed back into human form.
• Irina realized she had missed Professor Lupin's class, and Linley noted that Snape was likely teaching because of the full moon.
• Linley remembered that his fourth-year Slytherin class also had Defense Against the Dark Arts later.

Linley and Irina returned to Hogwarts, where Irina reassured her friends that she had not missed important Defense Against the Dark Arts material. During a stormy Quidditch match between Gryffindor and Hufflepuff, Harry saw a black dog in the stands and mistook it for the Grim, leaving him shaken.

• Linley and Irina returned to Hogwarts, and Snape taught the fourth-years a review lesson on werewolves.
• Irina told the Gryffindors she had already studied the werewolf lesson, and Hermione gave her notes.
• Irina promised Harry she would watch Gryffindor's match against Hufflepuff, while Ron teased her about Linley.
• Harry played in the storm as Hermione cast Impervius on his glasses so he could see through the rain.
• Harry spotted a shaggy black dog in the stands, mistook it for the Grim, and slipped on his broom before the dog disappeared.

Over a hundred Dementors invaded the Quidditch pitch, causing Harry to fall unconscious and plunging the young wizards into despair. Linley, Irina, and other students resisted with Patronuses until Dumbledore drove the Dementors away, then showed approval toward Linley and Irina.

• Harry spotted the Golden Snitch and flew upward, but the Dementors' arrival caused him to lose consciousness and fall.
• Linley and Irina, joined by students who knew the Patronus Charm, summoned Patronuses to protect the crowd.
• Linley's Silver Wolf and Irina's Silver Fox charged through the Dementor army, weakening its attack before dissipating from exhaustion.
• The Dementors tried to return to the pitch, but Dumbledore cast a powerful Patronus that drove them away and used a Cushioning Charm to land Harry safely.
• Dumbledore looked with gratification at the students who had resisted, especially Linley and Irina.

After Harry’s fall during the Quidditch match, he learned that the Whomping Willow had smashed his Nimbus 2000. In Professor Lupin’s class, Harry asked why Dementors affected him so strongly and revealed that he heard Voldemort killing his mother when they came near.

• Cedric caught the Golden Snitch, and Oliver Wood openly accepted Hufflepuff’s victory.
• Harry woke and learned that his Nimbus 2000 had been blown into the Whomping Willow and shattered.
• Professor Lupin returned to teaching Defense Against the Dark Arts, showed the class a Hinkypunk, and excused Snape’s homework.
• Professor Lupin stopped Harry after class and explained that Dementors affected him because of the terrible fears he had experienced.
• Harry told Professor Lupin that Dementors made him hear Voldemort killing his mother.

Harry learned that Irina and Rory could resist Dementors, and Irina offered to teach him alongside Linley. After Harry left, Irina confronted Professor Lupin with the claim that Sirius Black was innocent and revealed evidence suggesting Peter Pettigrew was alive as Ron’s rat, Scabbers.

• Lupin explained that Dementors fed on the heightened emotions of the Quidditch crowd and described how Azkaban imprisoned people in despair.
• Irina invited Harry to meet her and Linley at the edge of the Forbidden Forest that night to learn how to resist Dementors.
• Irina told Lupin that she knew Sirius Black was an Animagus and suspected Lupin knew him, then showed him the Marauder’s Map.
• Irina said Peter Pettigrew had framed Sirius and handed Lupin a newspaper photograph showing that Ron’s rat, Scabbers, was missing a toe.

Irina explained the truth about Peter Pettigrew and asked Professor Lupin to support her and Linley’s plan to punish him, which Lupin accepted. Later, Linley began teaching Harry the Patronus Charm near the Forbidden Forest.

• Professor Lupin recognized Peter Pettigrew in the newspaper photograph and reasoned that Pettigrew had framed Sirius Black after faking his death.
• Irina told Professor Lupin that she and Linley had met Sirius and described their plan to trap Pettigrew in an alchemical cage.
• Professor Lupin agreed not to alert Pettigrew or interfere with Linley’s cage, and to support their plan at the end of the school year.
• After Dumbledore kept Dementors away from the castle, Harry sneaked out at night and met Linley and Irina at the edge of the Forbidden Forest.
• Linley explained the Patronus Charm’s theory and casting techniques to Harry, describing it as a force Dementors could not harm.

Linley helped Harry begin learning the Patronus Charm, then arranged for Harry to receive the Marauder's Map so events would follow the expected course. On the final Hogsmeade weekend before Christmas, Irina gave Harry the map and showed him how to activate it.

• Linley taught Harry the Patronus Charm, and Harry managed to produce silvery-white mist.
• Linley and Irina decided Harry should receive the Marauder's Map, and Linley revealed that he had made several copies.
• Linley gave the copies to Irina and set their opening and closing password to “Voldemort is a braised egg plus a two-prong electrical outlet.”
• After Ron and Hermione left for Hogsmeade, Irina led Harry to an empty classroom and gave him a Marauder's Map.
• Irina told Harry to tap the map with his Wand and say, “I solemnly swear that I am up to no good!”

Linley and Irina went to Hogsmeade, where they waited in The Three Broomsticks as Harry, Ron, and Hermione arrived, followed by Professor McGonagall, Professor Flitwick, Hagrid, and Cornelius Fudge. The three groups gathered in the pub, leaving the chapter poised for their stories to intersect.

• Irina gave Harry the Marauder's Map and left him studying it, then met Linley in the corridor.
• Linley and Irina went to Hogsmeade, bought supplies for Emergency Rations and their other creatures, and stopped at The Three Broomsticks.
• Madam Rosmerta teased Linley and Irina about being a couple and served them Butterbeers.
• Harry, Ron, and Hermione entered the pub and sat at a table hidden from most of the room, unaware of Linley and Irina.
• Professor McGonagall, Professor Flitwick, Hagrid, and Cornelius Fudge arrived and took a table nearby.

At The Three Broomsticks, Harry overheard Fudge and Madam Rosmerta imply that Sirius Black betrayed James Potter, leaving him shaken. Afterward, Linley invited Irina to visit the Fli Family library with Irvin before Christmas, though Irina wondered whether Irvin's family would let them read its books.

• Fudge told Madam Rosmerta that he believed Sirius Black was still nearby and defended the Dementors' presence as protection.
• Madam Rosmerta recalled that Sirius Black and James Potter had been inseparable friends, prompting Harry to drop his glass and stare blankly.
• Hagrid shouted that Sirius Black was a filthy traitor, silencing the pub.
• Professor McGonagall and the others left, followed by the distraught Harry and his friends, and Linley and Irina decided to leave too.
• Linley invited Irina to visit the Fli Family library with Irvin during the three days before Christmas, and Irina questioned whether Irvin's family would grant them access.

Linley and Irina discussed why Irvin’s family had invited them to borrow books, then explored the magical creature habitats inside Irina’s suitcase. Linley suggested building a place to stay there, and Irina was left flustered when he hinted at making it a home for the two of them.

• Linley explained that Irvin’s family likely wanted to show goodwill, and Irina agreed to join him in borrowing books from the Fli Family.
• Irina invited Linley into her magical suitcase, where she showed him the habitats she had made for Qing Nü, Little Treasure, and Little Swooping Evil.
• Linley admired the suitcase’s Pocket Dimension and considered how its magic might be recreated and improved with alchemy and the Sand of Time.
• Linley suggested building a living area in the suitcase for use while traveling, and Irina realized Newt’s shed had served that purpose.
• Linley offered to help build a villa, and Irina teased him about wanting to move in before he asked whether she wanted a home of their own, leaving her flustered.

Linley built Irina a villa and woodland in her Pocket Dimension while Harry brooded over Sirius Black. On Christmas Eve, Linley and Irina used a Portkey to reach the ancient Fli Manor, where Irvin and Mr. Fli welcomed them.

• Linley used alchemy and magic to build Irina a silver-glowing villa with a garden, lake, and rockeries in her Pocket Dimension.
• Linley and Irina cleared a small woodland for Emergency Rations, using trees taken from the Forbidden Forest.
• Over the following two weeks, Harry repeatedly talked about taking revenge on Sirius Black, and Irina kept Peter Pettigrew's identity from him.
• After Christmas dinner, Linley and Irina used a Portkey to travel to the Fli Family manor for Christmas with Irvin.
• Irvin welcomed Linley and Irina alongside Mr. Fli, the head of the Fli Family.

Irvin Fli explained that his family’s collection focused on Ancient Magic, which could be restored by reverse-deducing modern spells mastered to the point of effortless wandless, wordless casting. Linley and Irina proved they met that requirement, leaving Irvin astonished as they prepared to explore the Fli family’s ancient spells.

• Carol Fli welcomed Linley and Irina to Fli Manor, and Irvin led them on a tour with permission to read the family’s magical books.
• Irvin explained that different pureblood families collected books on specialties such as Dark Arts, Alchemy Magic, and Bloodline Magic, while the Fli family focused on Ancient Magic.
• Irvin described how practitioners reverse-deduced Ancient Magic from modern spells and said they had to cast those spells silently, wandlessly, and with thought alone.
• Linley cast Incendio with a single thought, and Irina formed five ice spikes from the Glacier Spell, showing that both could meet the prerequisite for practicing Ancient Magic.
• Irvin was stunned that Linley and Irina qualified to learn his family’s Ancient Magic.

Irvin brought Linley and Irina to Frey Castle, where their wandless, silent magic convinced Mr. Fli to grant them access to the family library. There they discovered the Fli Family’s thirteen surviving Ancient Magic books, including one that recorded Purgatory Demon Puppet, and Linley recognized its simplified spell as Incendio.

• Irvin told Mr. Fli that Linley and Irina had reached the threshold for practicing Ancient Magic, and they demonstrated their abilities with fire and ice spells.
• Mr. Fli apologized for underestimating Linley and Irina, welcomed Irvin’s association with them, and gave them permission to read the Fli Family’s books.
• Irvin led Linley and Irina to the library’s crystal cabinet and explained that the thirteen books were all that remained after a war nearly destroyed the Fli Family’s inheritance.
• Linley and Irina examined the books and found that the simplified versions of two Ancient Magic spells matched Incendio and Glacier Spell.
• Linley picked up the book titled Purgatory Demon Puppet and learned that it could give fire a soul, creating conscious soldiers that could fight.

Linley studied Purgatory Demon Puppet and realized he could create its warriors from unusual flames, while Irina read Illusory God of Cold Ice and learned how its stored Power of Cold Ice could be used. The chapter left both of them with new Ancient Magic to study and practice.

• Linley learned that Purgatory Demon Puppet used compressed flames and magic power from hell to create loyal, regenerative warriors.
• Linley realized he could use flames such as Fiendfyre, Goblet Immortal Fire, and Mana Suppression Flame to create Purgatory Demon Puppets with different properties.
• Linley decided to practice the Ancient Magic but recognized that learning its obscure summoning incantation would take time.
• Irina studied Illusory God of Cold Ice and learned to convert magic power into a separate reserve called the Power of Cold Ice.
• Irina read about using the Power of Cold Ice to form armor, weapons, combat puppets, and other icy techniques.

Linley and Irina discovered the powers of their Ancient Magic and borrowed the spellbooks to study at Frey Castle over Christmas. Linley opened his presents and found that Green had given him a box of C4 explosives, leaving him to wonder what dangers awaited at Hogwarts Castle.

• Irina learned that the Power of Cold Ice could absorb special attributes, and she and Linley asked Irvin to let them borrow the Ancient Magic books.
• Irvin agreed on the condition that Linley and Irina remain at Frey Castle, so they took the books on Purgatory Demon Puppet and Illusory God of Cold Ice to their rooms.
• On Christmas morning, Linley received a pendant from Irina made from a butterfly frozen in ice.
• Linley opened Green's enormous gift box and found a case of C4 Plastic Explosive and instructions for making an explosive charge.
• Linley read Green's letter explaining that Muggle weapons could help him face enemies without revealing magical fluctuations, though Linley thought Hogwarts Castle would be safe enough not to need them.

Linley and Irina opened their Christmas gifts, including powerful magical items from each other and Newt Scamander. They joined Irvin for breakfast, where they thanked him for giving them books on Ancient Magic.

• Linley wrote to Green that he was safe despite Green’s concern about Sirius Black and Muggle weapons.
• Irina unwrapped Linley’s improved Mana Suppression Scepter, which gained temporal powers and could be used three times before being destroyed.
• Irina opened Newt Scamander’s Magic Tent and found a luxurious villa inside it.
• Linley and Irina went downstairs and thanked Irvin for the Ancient Magic books he had given them.
• Irvin thanked Linley and Irina for their gifts: a Mana Suppression Scepter from Linley and magical venoms and Mandrake juice from Irina.

Linley and Irina practiced Ancient Magic in Frey Castle’s training ground for three days while Irvin trained nearby. Linley created the Purgatory Demon Puppet and tested its powerful offense and defense.

• Irvin told Linley and Irina that Mr. Fli had left, then brought them to Frey Castle’s self-repairing training ground.
• Linley, Irina, and Irvin practiced their magic and combat skills for three days.
• Linley formed a flaming humanoid, infused it with hellish magic, and completed the Purgatory Demon Puppet.
• Linley ordered the Purgatory Demon Puppet to split a steel block, and its flaming broadsword cut through it in under a second.
• Linley fired three shots from his Desert Eagle at the puppet’s defensive barrier, which melted the bullets into molten iron.

Linley tested the Purgatory Demon Puppet against several weapons and spells, then asked Irina to extinguish it so he could measure its resistance. The puppet’s destruction confirmed that Linley had successfully learned the Ancient Magic, while Irina recovered from the effort.

• Linley found that bullets melted against the Purgatory Demon Puppet and that Bombarda, Sectumsempra, and Avada Kedavra failed to destroy it.
• Linley asked Irina to use Ice Domain on the puppet while he prevented it from resisting.
• Irina’s spell took nearly five minutes and almost all her magic power to extinguish the puppet’s flames.
• Linley recognized the puppet’s destruction as proof that he had successfully learned the Ancient Magic.
• Linley gave Irina a magic-recovery potion, and she said she could resume practicing Illusory God of Cold Ice after resting.

Linley tested three kinds of fire as materials for Purgatory Demon Puppets, discovering that Fiendfyre produced a puppet that devoured spells while Goblet Immortal Fire created one that could never be extinguished. Unable to compress Mana Suppression Flame, he began making another Goblet Immortal Fire puppet to store for future battles.

• Linley forged a Fiendfyre Purgatory Demon Puppet and found that it absorbed his Bombarda spell, growing stronger.
• Linley stored the Fiendfyre puppet inside a metal cube with a ten-meter interior.
• Linley made a Goblet Immortal Fire Purgatory Demon Puppet, and Irvin and Mr. Fli failed to extinguish its eternal flames even after exhausting their magic.
• Linley judged the Goblet Immortal Fire puppet undying and indestructible, though its power and heat were lower than ordinary magical flames.
• Linley failed to compress Mana Suppression Flame into a puppet-making material and abandoned the attempt for now.
• Linley started making another Goblet Immortal Fire Purgatory Demon Puppet to preserve as a reserve for battle.

Irina converted her magic power into the Power of Cold Ice, creating a backup energy source before using it to form Ice Armor. Linley tested the armor with firearms and spells, and Irina found that only Sectumsempra managed to crack it.

• Linley finished making ten Goblet Immortal Fire Purgatory Demon Puppets and five Fiendfyre Purgatory Demon Puppets.
• Irina followed the Illusory God of Cold Ice method and converted her magic power into the Power of Cold Ice, storing it as a backup energy source.
• Irina formed thick Ice Armor and discovered that saying a move's name helped her channel the Power of Cold Ice faster.
• Linley fired three Desert Eagle shots at Irina, and the bullets bounced off her Ice Armor without scratching it.
• Linley tested Expelliarmus and Bombarda, but the armor deflected the Disarming Charm and withstood the explosion.
• Linley cast Sectumsempra, which carved a deep crack into the armor before Irina's Power of Cold Ice contained the curse.