Chapter Summaries

During the Gryffindor-Slytherin Quidditch match, Sean secretly protected Harry from a bewitched Quaffle while Dobby tried to control it. Sean overpowered Dobby’s magic, but Harry and Malfoy were still racing on the pitch as the struggle continued.

• Wood urged Harry to catch the Snitch or die trying, alarming Ron and Hermione.
• A Quaffle repeatedly attacked Harry, and the Gryffindor players suspected the Slytherins had tampered with it.
• Harry refused to stop playing, while Sean used the Impediment Jinx to keep the Quaffle from hitting him.
• Harry spotted Sean in the stands and turned away from the Quaffle, heading toward Malfoy as Malfoy feared a collision.
• Sean realized Dobby was contesting his control of the Quaffle and overcame the house-elf’s resistance with his will.

Harry won the Quidditch match but crashed and broke his arm, and Lockhart accidentally removed all its bones while trying to heal him. As Harry began the painful process of growing them back in the Hospital Wing, Sean wondered why only powerful Wizards seemed to pass down unusual bloodline abilities.

• Harry caught the Golden Snitch but crashed into the ground and broke his arm.
• Lockhart tried to heal Harry and removed the bones from his arm instead.
• Madam Pomfrey gave Harry Skele-Gro and ordered the visitors to leave so he could rest.
• Sean stayed in the Hospital Wing with Harry and learned that the Potter ancestor Linfred of Stinchcombe had invented a potion that eventually became Skele-Gro.
• Sean wondered why unusual magical bloodlines seemed to come only from powerful Wizards.

Sean visited the Headmaster’s office and retrieved the Sword of Gryffindor from the Sorting Hat, while Dobby warned Harry about the Chamber of Secrets. The chapter ended with Sean confronting McGonagall about the Chamber.

• Dobby admitted that he had stopped Harry from reaching school because he feared the Chamber of Secrets would be opened, and Harry reassured him that the Basilisk had been dealt with.
• Sean entered the Headmaster’s office, where the Sorting Hat gave him the Sword of Gryffindor and spoke about courage leaving a mark.
• Dumbledore and McGonagall watched Sean with the sword, and Dumbledore deflected McGonagall’s questions about the Chamber by suggesting they discuss Gryffindor and Ravenclaw instead.
• McGonagall studied an old book about the Chamber, its monster, and the Heir of Slytherin until Sean arrived and began asking about the Chamber.

Sean told Professor McGonagall how he uncovered the Chamber of Secrets plot and defeated the Basilisk, leaving her shaken by how much danger he had faced alone. After Sean left, she questioned Harry and Ron, and Ron began recounting Sean’s role in the events.

• Sean explained the Chamber of Secrets, Riddle’s diary, and the plot involving Ginny to Professor McGonagall.
• Professor McGonagall learned that Sean had defeated the Basilisk alone using Transfiguration and the Sword of Gryffindor, and she angrily demanded the full story.
• Professor McGonagall let Sean leave for Ravenclaw Tower and gently told him to get some sleep.
• Professor McGonagall summoned Harry and Ron, told them she knew about the Chamber, and invited them to add anything.
• Ron began telling Professor McGonagall how Sean had fought the Basilisk, while Harry tried to stop him as her expression changed.

Sean found that his Black Cat form was close to drawing Voldemort into its Boundary, while Hogwarts students eagerly anticipated Lockhart’s new Dueling Club. After Potions class, Sean waited at the Dungeon entrance as Snape kept Harry behind.

• Sean visited Luna in the Ravenclaw Common Room, where she talked about his bookshop and writing for The Quibbler before falling asleep.
• Sean tested his Boundary and found that improving Soul Transfiguration might let him pull Voldemort inside alongside Harry.
• Ravenclaw students read Lockhart’s notice announcing a Dueling Club, and Harry, Hermione, Justin, and Ron asked Sean whether he would attend.
• The professors prepared the Great Hall for the club, while Ron and the other Hope Cottage members looked forward to dueling and Sean noted their progress.
• After Potions class, Snape kept Harry behind to clean Flobberworms from a table, and Sean waited at the Dungeon entrance.

Sean told Snape that he had entered the Chamber of Secrets and killed the Basilisk, provoking Snape’s furious reaction. After leaving the Dungeon, Sean found Harry waiting anxiously, still troubled by Dumbledore’s explanation of his connection to Voldemort.

• Harry served detention in the Dungeon while Sean finished brewing his potion and prepared to tell Snape about the Chamber of Secrets.
• Sean recounted how he had tracked the Basilisk to the Chamber, and Snape erupted in anger when Sean revealed that he had dealt with it himself.
• Snape noticed Sean had finally spoken up because of Snape’s earlier request, while Sir Cadogan’s portrait made cryptic remarks about rekindled feelings.
• Harry waited outside the Dungeon, saw spiders return through a crack, and worried about his ability to speak Parseltongue and his link to Voldemort.
• Sean emerged and found Harry waiting; when Harry began criticizing Snape, Sean silently cast a Muffling Charm as Snape watched them from the entrance.

Harry questioned whether he resembled Voldemort, but Justin reminded him that Harry had defeated him. Snape imposed harsh point deductions in Potions before the students gathered in the Great Hall for a dueling event, where they waited to see who would teach them.

• Harry worried that Voldemort's influence made them alike, and Justin comforted him by pointing out that Harry had made Voldemort disappear.
• Sean practiced Soul Transfiguration in his Animagus form until curfew.
• Snape harshly enforced classroom rules, costing Hufflepuff forty points and taking points from Ravenclaw as well.
• Hermione warned Harry, Ron, and Neville to keep their heads down after their past point losses.
• Students gathered in the transformed Great Hall for a dueling event and wondered who would teach them.

During a dueling demonstration, Snape paired Sean with the much older Flint, but Sean defeated him effortlessly with two silent spells and Transfiguration. The chapter left Lockhart facing Snape’s cold demand to demonstrate the proper dueling stance.

• Snape paired Sean with Flint, prompting protests and concern from the students.
• At Lockhart’s signal, Flint cast Expelliarmus, but Sean simultaneously used Finite and Impedimenta and Transfigured stone arms to disarm him.
• Hermione and Justin recognized Sean’s silent spell combination and advanced Transfiguration, and the students applauded his victory.
• Snape rebuked Flint, while Lockhart took credit for Sean’s success and Snape stared at him ominously.
• Snape told Lockhart to demonstrate the proper dueling stance, leaving Ron, Justin, and Hermione speculating about what would happen to him.

Snape’s Dueling Club demonstration sent Lockhart to the Hospital Wing, and Snape then paired the students for practice duels. As Sean followed Snape around the hall, Harry and Malfoy’s fierce duel unleashed a snake that faced Harry.

• Snape disarmed Lockhart with Expelliarmus, then secretly cast additional spells that made Lockhart collapse and get sent to the Hospital Wing.
• Snape paired the students for duels and led Sean around the hall, explaining their mistakes and ways to counter spells.
• Hermione defeated Pansy with Stupefy, Justin and Neville fought evenly, and Harry and Malfoy exchanged spells.
• Malfoy’s wand produced a long black snake, and Snape told Harry not to move as the crowd backed away.

After Harry spoke Parseltongue, his friends explained why the school might suspect him of being Slytherin’s Heir, while Sean visited Dumbledore and witnessed Harry’s troubled exchange with the Sorting Hat. Sean concluded that Harry was not to blame for the darkness within him, leaving the mystery of his connection to it unresolved.

• After Snape vanished the snake, Sean pulled Harry away from the watching crowd, and Ron, Hermione, Justin, and Neville warned him that speaking Parseltongue would revive suspicions about the Heir of Slytherin.
• Hermione explained to Justin and Neville how she and the others had discovered the Basilisk and how Sean had fought it.
• Hufflepuffs, including Ernie and Hannah, spread rumors that Harry was a Dark Wizard because he could speak to snakes and had survived Voldemort’s attack.
• Sean went to Dumbledore’s office, where Dumbledore hinted that Lockhart’s deceptions would soon be exposed and that Sean understood the importance of sincerity.
• Harry entered the office unseen, asked the Sorting Hat about belonging in Slytherin, then rejected its answer and left in distress.
• After Harry left, Dumbledore asked Sean for his answer, and Sean said that Harry had not chosen what happened to him and that the one who created the darkness was the true sinner.

Dumbledore showed Sean the Basilisk in the Chamber of Secrets, then took him into memories of Tom Riddle’s childhood. The chapter ended with young Riddle revealing stolen objects he had taken from other children.

• Dumbledore brought Sean to the Chamber of Secrets, where the Basilisk emerged from Slytherin’s statue and affectionately circled him.
• Dumbledore suggested the Basilisk wear earmuffs, and it fell asleep before he led Sean out under a Disillusionment Charm.
• In his office, Dumbledore told Sean that Voldemort had once been named Tom Riddle and invited him to view his memories in the Pensieve.
• Sean watched Dumbledore visit young Riddle at an orphanage, where Riddle described his magical abilities and learned he was a Wizard.
• In another memory, Dumbledore asked Riddle about a rattling box, and Riddle admitted it contained stolen objects.

Dumbledore showed Sean memories of young Tom Riddle returning stolen trophies and accepting money, then urged Sean to choose his life carefully. As Sean considered Voldemort’s Horcruxes, Harry struggled with doubts about his connection to Slytherin and dreamed of meeting the Black Cat.

• Dumbledore showed Sean young Riddle returning stolen goods and accepting a pouch of money without thanking him.
• Dumbledore warned Sean that Riddle had kept trophies taken from children he bullied and told him to choose his life carefully.
• Sean left the Headmaster’s office believing Dumbledore knew about Voldemort’s Horcruxes and had allowed him to study Deadly Magic.
• Harry heard Peeves taunt him about controlling snakes, then wrestled with doubts about belonging in Gryffindor.
• Harry spotted the Castle Spirit Cat but could not catch up with it, then dreamed of meeting it at the Children's Home.

Harry spoke with the Black Cat in The Boundary, confronting his fear that his Parselmouth ability meant he would become like Voldemort. He awoke at dawn with renewed resolve, while Sean later realized his second Soul Doppelganger was taking shape as a Wampus Cat and wondered where to find one.

• Harry admitted to the Black Cat that he feared his Parselmouth ability and Slytherin traits made him destined to become a terrible person.
• The Black Cat drove away Harry's fear and explained that his choice to reject Slytherin distinguished him from Tom Riddle.
• The Black Cat showed Harry an image of him drawing the Sword of Gryffindor and urged him to choose and defend the life he wanted.
• The Black Cat told Harry he had called for himself seventy times, then faded as Harry awoke in the snowy Gryffindor Common Room with renewed resolve.
• In The Boundary, mist formed a Wampus Cat shape as the Black Cat's form blurred and its presence spread through Hogwarts.
• Sean recorded his time in The Boundary and concluded that his second Soul Doppelganger was becoming a Wampus Cat, then wondered where to find one for Fantastic Beast biscuits.

Sean practiced Soul Transfiguration before attending a Defense Against the Dark Arts class taught by Snape, who had replaced the incapacitated Lockhart. After class, Sean suggested Hermione ask Bruce about Lockhart while she investigated the Mandrakes in the Greenhouse.

• Sean checked his Transfiguration proficiency and transformed into a black cat to leave the Ravenclaw dormitory.
• Harry told his friends about his encounter with Mr. Black Cat, then the students wondered whether Defense Against the Dark Arts class would take place.
• Snape taught Defense Against the Dark Arts and deducted five points from Gryffindor after criticizing Harry's book.
• Fred and George teased Harry by calling him the Heir of Slytherin, and Harry joked that he would not have tea with fanged servants.
• Sean told Hermione that she could ask Bruce about Lockhart while visiting the Greenhouse to learn about the Mandrakes.

Sean studied Fantastic Beasts and Where to Find Them and became interested in finding a Wampus Cat at Ilvermorny School of Witchcraft and Wizardry. Professor Terra arranged to take Sean there during Christmas, and Sean’s Plan Map marked the school as their destination.

• Sean reviewed his alchemy research and reflected on the difficulty of reaching Master level.
• Sean read that Wampus Cats lived at Ilvermorny School of Witchcraft and Wizardry and considered how difficult one would be to find.
• Professor Terra told Sean she was looking for him and proposed a Christmas trip to Ilvermorny.
• Professor Terra sent Eugenia Herrera a message saying she would bring her disciple for a visit during Christmas.
• Sean’s Plan Map added Ilvermorny School of Witchcraft and Wizardry as a landmark marked for Christmas.

Sean and Justin went to Green's Bookshop in Hogsmeade after learning the renovations were complete, and Sean told Justin that Lupin was a Werewolf. Lupin arrived at his new room and, as Sean knocked on the door, faced the prospect of welcoming visitors to his first housewarming.

• Bai Yi delivered Sean a letter from Green's Bookshop saying the renovations were complete, and Sean and Justin set off for Hogsmeade.
• When Justin asked what had left Lupin adrift, Sean told him that Lupin was a Werewolf.
• Lupin arrived at Green's Bookshop and found that his agreement gave him residency there for as long as his employment contract lasted.
• Sean and Justin reached Lupin's refurbished room, where Lupin sat alone and remembered Dumbledore taking him to Hogwarts.
• Sean knocked on Lupin's door and introduced himself.

Sean and Justin welcomed Lupin to his cottage with gifts, shared tea, and studied Green's Notes with him. After Justin gave Lupin Wolfsbane Potion as a housewarming gift, Sean revealed the Marauder's Map, leaving Lupin stunned by its familiar names.

• Sean and Justin filled Lupin's cottage with housewarming gifts and shared tea with him.
• The three studied Green's Notes together, and Lupin impressed the boys with his knowledge of magical history.
• Justin told Lupin that he knew he was a Werewolf and gave him a box of Wolfsbane Potion, to be deducted from his wages.
• As Sean and Justin left the bookshop, Lupin offered to show them shortcuts through Hogsmeade, but Sean showed him the Marauder's Map instead.
• Sean activated the map, revealing the names Moony, Wormtail, Padfoot, and Prongs, and Lupin recognized them.

Sean’s plans to deal with Voldemort’s lingering soul advanced while he considered learning the Patronus Charm from Lupin. The chapter ended with the Plan Map marking Harry with a red exclamation point on the day Sean would face Voldemort’s fragile soul.

• Lupin studied the Marauder’s Map as Sean explained how it revealed secret passages and people at Hogwarts.
• Justin warned Lupin that Sean’s trust was precious, then left; Sean and Justin slipped away from The Three Broomsticks after spotting Professor Flitwick asleep there.
• Minerva McGonagall placed Sean’s Animagus registration form in a drawer and worried over his disregard for rules.
• Harry and Ron bowed to the Black Cat statue, drawing a crowd of young wizards into the Castle Spirit Cat Club.
• Sean saw the Plan Map mark Harry with a red exclamation point, signaling that he would face Voldemort’s fragile soul that day.

Harry met the wounded fragment of Voldemort’s soul in a dreamlike realm, where the Black Cat explained that the fragment had chosen to die. Harry woke feeling peaceful and relieved that Voldemort’s soul was gone from within him.

• Harry found himself in a mist-filled realm with the Black Cat and followed the sounds of a struggling creature.
• The Black Cat revealed that the wounded creature was Voldemort’s soul fragment and showed Harry the difference between its pitiful soul and Voldemort’s fearsome image.
• The fragment chose death and vanished into the mist, destroying one of Voldemort’s Horcruxes.
• The Black Cat explained that Harry was less afraid of returning to the realm than Voldemort had been.
• Harry’s dream ended, and he murmured a devout description of the Castle Spirit Cat while feeling peaceful about the vanished soul.

Sean continued his studies while reports he had arranged with Dumbledore began revealing that Hagrid had been framed as the Heir of Slytherin. The chapter ended with Professor Sprout welcoming Hermione to a group activity in Greenhouse Three.

• Harry, Ron, and Hermione discussed newspaper claims that Hagrid was the Heir of Slytherin, and Luna objected when Hermione dismissed The Quibbler.
• Justin prompted Hermione to consider how The Quibbler could help expose Lockhart as a fraud.
• Sean received a letter from Rita confirming she had written reports truthfully under his and Dumbledore’s instructions, and he burned it.
• Rita’s reports and a biography of Armando Dippet stirred Hogwarts with claims that Hagrid had been wrongly blamed for the Chamber of Secrets murders.
• Professor Sprout welcomed Hermione to Greenhouse Three, where Mandrakes danced as the students helped with herbs.