Chapter Summaries

After the Chamber of Secrets was opened, Hogwarts students were confined to the Great Hall while the professors searched for the Basilisk and the culprit. Sean suspected the monster traveled through the pipes and questioned Hagrid about his expulsion, but Hagrid’s answer was left unresolved.

• Professor McGonagall ordered the students to stay overnight in the Great Hall while professors searched Hogwarts and prefects maintained order.
• Sean told Hermione and Daisy that the monster was probably a Basilisk that moved through the pipes, and he decided to ask Hagrid about the Chamber’s earlier opening.
• The students spent a sleepless night in the Great Hall, and the professors failed to catch the culprit.
• Professor McGonagall kept the students confined the next day, and Sean went to ask Hagrid why he had been expelled.
• Hagrid admitted that he had been expelled and asked Sean whether he thought Hagrid had opened the Chamber of Secrets.

Sean learned from Hagrid that Tom Riddle had transferred to Newmontgard before the Chamber of Secrets was opened fifty years ago, overturning Sean’s assumptions about the old attack. Sean suspected the Chamber’s opening was tied to Newmontgard’s founding or the prophecy, but the culprit remained unknown.

• Hagrid told Sean that he had been expelled after Moaning Myrtle died and he was blamed for raising Aragog, though Dumbledore believed he was innocent.
• Sean asked Hagrid about Tom Riddle, and Hagrid recalled that Riddle had visited him the previous year.
• Hagrid revealed that Riddle transferred to Newmontgard at the end of his fourth year, before the Chamber of Secrets opened during Hagrid’s fifth year.
• Sean realized that Riddle could not have opened the Chamber fifty years ago and wondered who had done it and why the Chamber had remained closed afterward.
• Hagrid said Newmontgard had just been founded when Riddle transferred, prompting Sean to suspect a connection between the school, the Chamber, and Grindelwald’s prophecy.

As Hogwarts remained under threat from the Basilisk, Sean confirmed clues about its presence and proposed using recorded rooster crowing to attack it through the plumbing. He also offered a plan to help protect the students, arranging for Professor McGonagall or Professor Scamander to contact his father for supplies.

• Sean learned from Professor Flitwick that all the school’s roosters had been killed and that spiders were fleeing the castle, supporting his Basilisk theory.
• Professor McGonagall and Professor Scamander reported that they could not find the Chamber of Secrets and would have to wait for Dumbledore while keeping students guarded.
• Sean suggested recording a rooster’s crow and playing it near pipes to harm the Basilisk, and the professors agreed it was worth trying.
• Sean proposed another protective plan and asked Professor McGonagall to contact Charlotte Hawke so she could help reach his father for supplies.
• Professor McGonagall considered the request, and Sean offered to write his father a letter explaining what was needed.

Sean helped Hogwarts prepare to defend itself against the Basilisk by arranging for rooster crows to be played through gramophones and thousands of live roosters to be brought to the school. The students received their roosters as classes were set to resume, while the Basilisk's fate remained uncertain.

• Sean and the professors had enormous gramophones play rooster crows throughout Hogwarts for most of the morning.
• Professor McGonagall announced that classes would resume the next day while the professors continued working to keep everyone safe.
• Newt distributed roosters supplied by Sean's father, Mr. Wallop, to the students.
• Sean explained that roosters could kill a Basilisk and that their presence would deter both the creature and its controller.
• Professor McGonagall told the students to care for their roosters and replace any that died through Hagrid or Professor Scamander.

Hogwarts students used roosters and spider alarms to protect themselves from the Basilisk, while Sean worried that Dumbledore had not returned. When Terry reported that someone had killed Hagrid’s roosters, Sean suspected the Heir of the Chamber had made a move.

• Hogwarts students carried roosters and used spider-filled boxes to watch for the Basilisk, following Sean’s plan and Professor McGonagall’s instructions.
• Sean joked with Hermione and Daisy about Daisy overfeeding her rooster, Bobby, and defended his spider alarm idea.
• Terry Boot entered the Ravenclaw Common Room and reported that Hagrid’s entire flock of roosters had been killed in the rain.
• Ravenclaw students worried that they would have no replacement roosters if their own birds died, while Sean smiled as he considered the attack.

Sean investigated the mysterious slaughter of the Hogwarts roosters while his father supplied replacement flocks from Wallop Farm. After the new flock was killed despite added warning spells, Sean began thinking of another way to guard the coop.

• Mr. Wallop donated a large flock of tagged roosters to Hogwarts, and Sean learned that the previous flock had been killed with their throats cut rather than by a spell.
• The students thanked Sean for Wallop Farm’s donation after learning that the monster feared roosters, leaving him uncomfortable with his new reputation as a wealthy farm heir.
• Hagrid told Sean that another flock had been slaughtered overnight without triggering the professors’ warning spells, and Sean examined the precise cuts on a dead rooster.
• Sean told Hagrid to report the deaths, request more roosters from Mr. Wallop, and split the next batch between Hagrid and Professor Scamander.
• Sean realized the supply of roosters could not last indefinitely and thought of finding something else to guard the coop as another batch arrived.

After the invisible killer escaped a trap and killed several roosters, Sean reconsidered what kind of being could evade the professors’ spells. He and Professor McGonagall realized the culprit might be a ghost, though they still had to explain how it could kill.

• An invisible attacker slit the throats of several roosters in the coop, but escaped after a Binding Charm activated and Professor Flitwick and Professor McGonagall attacked.
• Professor Snape found no poison or Dark Arts on a dead rooster, and Professor McGonagall ordered someone to stay with Hagrid while they devised another plan.
• Professor McGonagall told Sean that the trap had failed, and he wondered how the killer could evade spells and remain invisible.
• Sean asked whether ghosts were affected by spells, and Professor McGonagall realized the killer might be a ghost.

Sean and Professor McGonagall suspected the Ghostly Horned Serpent was helping the Chamber’s Heir, but they had no safe way to stop it. While escorting Sean, Nearly Headless Nick revealed that the Moody Witch was Gormlaith Gaunt, leaving Sean stunned.

• Sean and Professor McGonagall concluded that the Ghostly Horned Serpent was likely the murderer’s accomplice and might be a new kind of Non-Being or magical creature.
• Sean considered that the Serpent might be vulnerable while possessing someone, but he refused to put himself or Daisy at risk.
• Sean left Professor McGonagall and met Nearly Headless Nick, who escorted him toward Hermione and Daisy while reminding him to travel with others.
• Sean asked Nick whether ghosts could use magic and whether any ghosts might know ancient knowledge; Nick said he knew a reclusive ghost who might help.
• Nick revealed that the ghost was called the Moody Witch and that her real name was Gormlaith Gaunt, leaving Sean frozen in shock.

Sean learned that the ghost who opened the Chamber of Secrets was Gormlaith Gaunt, a cruel pure-blood supremacist descended from Salazar Slytherin. He uncovered her history and connection to Ilvermorny, but remained unsure why she had opened the Chamber as a ghost.

• Sean asked Nearly Headless Nick about Gormlaith Gaunt, and Nick described her as an irritable, cruel witch who lived alone in Cormgary Valley.
• Sean sent Nick to inform Professor McGonagall, then borrowed Hermione’s copy of World Schools of Magic.
• Sean read that Gormlaith had killed Isolt Sayre’s parents, raised Isolt in isolation, and later tried to kill Isolt and her family in America.
• Sean learned that Gormlaith’s final scheme had failed when a poisoned arrow killed her, and he realized she could speak Parseltongue as a descendant of Slytherin.
• Sean wondered why Gormlaith had come to Hogwarts as a ghost and opened the Chamber of Secrets.

Sean searched for a way to deal with the ghosts threatening Hogwarts but found no answers, while Professor McGonagall could only arrange for the ghosts to watch for intruders. Lily sent Sean a large bottle of Felix Felicis, and he drank a spoonful before spending all 1,530 of his points on the system’s Lottery Draw.

• Sean worried that Gormlaith Gaunt and the Ghostly Horned Serpent could hide in Hogwarts, while Professor McGonagall said she had no way to deal with them yet.
• Sean, Hermione, and Daisy searched the library for a way to handle ghosts, but Sean found nothing useful.
• Hermione read alarming Daily Prophet reports about the Chamber of Secrets, while Daisy and Sean trusted that Dumbledore would return and solve the problem.
• Gugu delivered a package from Lily containing a large bottle of Felix Felicis and instructions to take it sparingly.
• Sean drank a spoonful of Felix Felicis, then ordered the system to use all 1,530 of his points on Lottery Draws.

Sean used his gold rewards and followed an intuition to activate Dark Sleeper, which let him return to the floating island within his mind. He provoked the hidden Pride beneath the island without drawing it out, then called the Obscurus to talk.

• Sean received six gold-tier rewards and assigned his free talent point to Transfiguration.
• Sean used Dark Sleeper and entered the floating island inside his mind.
• Sean addressed Pride in the lava, allowed its negative emotions to invade him, and taunted it as a coward.
• A massive head rose beneath the island, watched Sean, and sank back into the lava.
• Sean returned to the villa and summoned the Obscurus to speak with him.

Sean used the Dark Sleeper to draw the Obscurus close and put his hand on its core, struggling against the urge to destroy it and absorb its power. He began using the method he had learned from Riddle to transfer his negative emotions to the Obscurus, while suspecting that Sin had preserved Riddle’s Soul Fragment as a way to awaken early.

• Sean realized the Obscurus could think and coaxed it into letting him touch its core.
• Sean discovered he could pierce the Obscurus’s barrier and take control of its life, but fought the temptation to kill it.
• A giant Sean beneath the floating island expelled a black mist containing Tom Riddle’s pained face.
• Sean recalled how he had communicated with Riddle and transferred negative emotions to Dave.
• Sean began trying to transfer his negative emotions to the Obscurus and considered whether Sin had preserved Riddle’s Soul Fragment to awaken early.

Sean used Riddle’s soul-level communication method to establish trust with the Obscurus and learned that he could borrow its Source Magic without threatening its survival. He tested the power in his dormitory, then sensed something just before the door opened.

• Sean cleansed the Obscurus’s core of negative emotions and began communicating with it, while concluding that Riddle was likely still alive as a broken soul.
• Sean noticed a disturbance from deep beneath the Sky Island, where the enormous Sean associated with ‘Pride’ sensed the resonance and sank back into the magma.
• The Obscurus told Sean he could borrow all of its power as long as he returned it, and Sean distinguished its survivable Manifested Magic from its life-sustaining Source Magic.
• Sean borrowed Source Magic and transformed his left hand into black particles, shaping them into creatures and using them to decay a piece of parchment.
• Sean sensed a premonition, withdrew the Obscurus, and returned to his original form just as the dormitory door opened.

Sean used the lingering effects of Felix Felicis to confront Stephanie about forgetting his birthday and then overheard Snape berating Harry in the boys' lavatory. The chapter ended with Snape telling Harry that he was a disgrace to his mother.

• Terry Boot gave Sean a birthday gift and mentioned that the Weasley brothers were planning a surprise for him.
• Sean reminded Stephanie that his birthday had arrived and pointedly recalled the Monocle she had given him a year earlier.
• Sean headed toward the broom cupboard to find the Weasley brothers and overheard Snape questioning Harry in the boys' lavatory.
• Harry argued with Snape about losing Gryffindor points and accused him of unfairly criticizing his work in Potions.
• Snape shoved Harry against the wall and insulted his parents, ending by calling him a disgrace to his mother.

Sean interrupted Harry and Snape’s hostile confrontation, then found Fred and George planning a birthday prank involving enchanted Water Babies and persuaded them to abandon it. The twins wished Sean a happy birthday and gave him a mysterious square of parchment.

• Sean made noise outside the washroom, interrupting Harry and Snape as they argued, and the two left separately.
• Sean went to the broom cupboard and overheard Fred and George planning to flood Hogwarts’ drains with enchanted Water Babies bearing birthday wishes for him.
• Sean told the twins to abandon the prank because it would clog the castle and make an unpleasant birthday spectacle.
• Fred and George agreed to drop the plan, then wished Sean a happy birthday and handed him a large square of parchment.

Sean received the Marauder's Map from Fred and George and discovered that Snape had been one of its creators. When Gormlaith Gaunt appeared in the second-floor girls' washroom, Sean decided to approach her alone after sending Naja to alert Professor Scamander.

• Fred and George gave Sean the Marauder's Map and showed him how to reveal and hide its contents.
• Sean used the map to confirm that Snape had been one of the Marauders and saw that the parchment revealed nearly all of Hogwarts, including secret passages.
• Sean planned to compare the map's names with a student roster to search for an uninvited guest.
• Sean spotted Gormlaith Gaunt appearing in the second-floor girls' washroom, the entrance to the Chamber of Secrets.
• Sean sent Naja to notify Professor Scamander and prepared to meet Gormlaith alone, relying on Felix Felicis and what he had learned about dealing with ghosts.

Sean recalled how the Obscurus had destroyed the last remnants of Riddle's Soul Fragment, giving him knowledge of a spell that could freeze ghosts and help erase them. Preparing to learn why Gormlaith Gaunt had left the Chamber of Secrets, Sean disguised himself as Draco Malfoy and headed for the second-floor bathroom to gain her trust.

• Sean realized Pride had kept Riddle's knowledge beyond the Dark Arts bound to his dormant Soul Fragment until the Obscurus destroyed it.
• Sean learned that Nihilo Intuor could solidify souls and freeze ghosts, allowing soul-affecting spells to erase them completely.
• Sean prepared safeguards against the Ghostly Horned Serpent, instructing Pudding, Dave, and the Obscurus to watch for danger.
• Sean used Nymphadora Tonks's Mask to take Draco Malfoy's appearance, reasoning that Gormlaith Gaunt might trust a Malfoy.
• Sean changed into Slytherin robes, loaded a bag with gold Galleons, and strode toward the second-floor bathroom.

Disguised as Draco Malfoy, Sean lured Gormlaith Gaunt into revealing that she had opened the Chamber of Secrets and wanted him to join her plan to purge Hogwarts of Muggle-born students. Gormlaith ended by proclaiming that Salazar Slytherin was about to return.

• Sean entered the second-floor girls' washroom disguised as Malfoy and pretended to rant against Muggle-born students while washing his hands.
• Gormlaith Gaunt appeared and agreed that Hogwarts needed to be rid of people she considered unworthy.
• Sean feigned ignorance of Gormlaith's identity, then pretended to recognize her as a descendant of Slytherin.
• Gormlaith identified Sean as Draco Malfoy and claimed that she had opened the Chamber of Secrets.
• Gormlaith invited Sean to help complete her cleansing plan and declared that Salazar Slytherin was about to return.

Sean, disguised as Draco Malfoy, discovered that Gormlaith Gaunt could transform into a physical Obscurus and pretended to submit to her threats. Gormlaith asked him to remove obstacles around the castle in exchange for a reward from Slytherin.

• Gormlaith threatened Sean with the promise of Slytherin's return and her influence over the future Hogwarts School Board.
• Gormlaith transformed from a ghost into a physical being infused with Obscurus power and pinned Sean against a wall.
• Sean endured Gormlaith's attack without resisting, gauged her strength, and pretended to believe her claims.
• Gormlaith asked Sean to clear obstacles around the castle so she could move freely and promised him a reward from Lord Slytherin.

Sean questioned Gormlaith about Salazar Slytherin’s awakening and her return from death, while secretly assessing her powers. Gormlaith asked Sean to lure Hogwarts professors to their deaths and offered him the secret of immortality as a reward.

• Sean asked Gormlaith about Slytherin’s condition, and she claimed he was awakening and would return after she purged Hogwarts.
• Gormlaith said Slytherin had given her power and that she had walked back from the other world.
• Gormlaith killed a rooster to demonstrate her physical body, and Sean concluded she might be unable to use magic.
• Gormlaith ordered Sean to lure the professors out so Slytherin’s pet could kill them.
• Gormlaith offered Sean the secret of immortality to persuade him to help.