Chapter Summaries

Grindelwald explained how he and Dumbledore had tried to weaken the prophecy by manipulating their own memories, then asked Sean whether he would accept sacrifice. Three days later, Sean saw the Wizarding United Guard announce a life sentence for a wizard who had murdered Muggles, while students praised the Guard’s campaign.

• Grindelwald explained that the prophecy grew stronger as more people believed in it and compared Sean to a needle that could trigger it.
• Grindelwald revealed that he had altered his memories to deceive the prophecy, then asked Sean whether he would be willing to sacrifice himself or others.
• Sean refused to promise self-sacrifice and said only the person being sacrificed could make that choice.
• Sean wondered whether the Wizarding United Guard was targeting Grindelwald, then dismissed the thought and went to sleep.
• Hermione showed Sean a report that Franz François had been sentenced to life imprisonment for murdering six Muggle tourists and concealing the crime.
• Students around Sean praised the Wizarding United Guard for prosecuting powerful wizards, while one student questioned whether its actions were only for show.

The Wizarding United Guard prepared a major operation targeting Grindelwald, while Sean, Hermione, and Daisy spent an ordinary evening at Newmontgard. The Guard stormed into the Great Hall, leaving Sean to face the sudden confrontation as Grindelwald calmly ate pudding.

• James Potter and Sirius drank leftover Felix Felicis and prepared their British office for the dangerous joint operation.
• Old Man Aiken confronted the Black wizard leading the French office, demanding a chance to see the person responsible for his missing hand.
• Cyril Marshall ordered the Guard to seize their target inside the Great Hall, insisting that the students’ presence would help protect them.
• Sean, Hermione, and Daisy entered the Great Hall, where Hermione limited Daisy’s desserts and Sean secretly saved her extra pudding.
• Cyril Marshall led the Wizarding United Guard into the Great Hall with the stunned guard Voltor Bata, while Daisy recognized her father among the arriving wizards.
• Sean realized the Guard had come for Grindelwald, who calmly tasted his pudding as the operation began.

The Wizarding United Guard confronted Gellert Grindelwald at Newmontgard and accused him of leading a terrorist organization, prompting students to rally in his defense. Sean secretly incapacitated one student who was meant to keep the crowd in place, but Fabian Aiken stirred the students up again before Professor Scamander arrived.

• Marshall asked Grindelwald to return with the Guard for an investigation into old crimes, then accused him of plotting terrorist acts and committing murders.
• Rai Pena and other Newmontgard students protested the accusation, while Sean recognized that Marshall was telling the truth about Grindelwald's past.
• Grindelwald ordered the professors to take the students away, and Sean used Naja to incapacitate a student who tried to rally them to stay.
• Fabian Aiken climbed onto a table and urged the students to remain and support Grindelwald, renewing their protests.
• Professor Scamander entered the Great Hall carrying a battered suitcase.

Newt Scamander testified against Grindelwald at Newmontgard, prompting Grindelwald to send the students away and leave Sean behind as an audience member. Grindelwald vanished with Sean, calling to his friends to meet him at the old place.

• Newt Scamander arrived at Newmontgard and testified that Grindelwald had orchestrated murders, planned to overthrow the Statute of Secrecy, and caused the Great Fire of Paris.
• Marshall offered Newt's Memory Thread and Veritaserum testimony as evidence, while Grindelwald remained silent and then ordered the students to go to bed.
• Grindelwald told Vinda Rosier to take charge of Newmontgard and ensure the students slept, then pulled Sean back into the Great Hall with an Apparition spell.
• Grindelwald seated Sean beside him and told the Wizarding United Guard that Sean was an audience member for his performance.
• Grindelwald took Sean and Apparated away despite the Anti-Apparition Charm, calling out, “My friends, meet me at the old place.”

Grindelwald brought Sean to the ruined Père Lachaise Cemetery and discussed Sean’s morality and his own crimes while they waited for the Wizarding United Guard. When the Guard arrived to arrest Grindelwald, he exposed many members as descendants of famous ancient wizards and Seers before magical flames erupted.

• Grindelwald Apparated with Sean to Père Lachaise Cemetery and showed him the ruined underground arena where he had once presented his ideals.
• Grindelwald told Sean that his strong sense of morality was his greatest weakness, and Sean admitted he was conflicted about supporting a man who had committed terrible crimes.
• Sirius arrived with the Wizarding United Guard, whose leader Marshall announced that Grindelwald was under arrest, while Newt stood beside her.
• Grindelwald named Guard members as descendants of famous ancient figures, including Seers Mopsus and Calchas and the family of Merlin.
• Marshall told Grindelwald that his speech was over, and magical flames shot into the sky.

Grindelwald overwhelmed the Wizarding United Guard with blue flames, revealing that his magical studies had made him more dangerous than they expected. As he burned the trapped wizards and turned toward something above the cemetery, he declared his love for Paris.

• The Guard trapped Grindelwald inside a combined silver barrier that blocked his blue flames, but Grindelwald examined the spell and questioned Newt about what he had told them.
• Grindelwald's remark about a eulogy preceded blue flames erupting across Père Lachaise Cemetery, while people across Paris witnessed the blaze and a fire dragon and Phoenix overhead.
• The Guard's combined spell failed, and a young wizard's escape attempt ended with him being consumed by the flames; James and Sirius struggled to protect Sean.
• Grindelwald revealed he had resumed his magical studies after giving up his ideals, then killed Marshall and taunted the Guard as he burned their members.
• Grindelwald questioned the Prossos and Vabralski descendants, killing them when they refused or tried to speak, then noticed a crack above him and laughed that he loved Paris.

At Père Lachaise Cemetery, Dumbledore confronted Grindelwald and revealed that he had helped arrange the wizard’s surrender, prompting Grindelwald to accuse him of betraying their trust and treating Sean as a bomb. As the two began fighting, Sean protected James, Sirius, and the Guard members from the magical flames, while Grindelwald’s fire creatures charged at Dumbledore.

• Dumbledore descended into the burning cemetery, and Grindelwald greeted him before demanding to know why he had come.
• Dumbledore told Grindelwald to surrender and explained that his crimes had to be answered for, while Grindelwald accused him of trusting the inhuman group and viewing Sean as a bomb.
• Grindelwald revealed that he had handed Dumbledore the Blood Pact and said he was deeply disappointed in Dumbledore’s choice.
• Grindelwald attacked Dumbledore with a flaming bird, and Dumbledore trapped it in a cage of stone.
• Sean cast Protego Diabolica to shield James and Sirius, then let the Guard members enter his ring of flames, though one wizard was burned to ash by Grindelwald’s fire.
• Rain fell over the cemetery as Grindelwald rose into the air and sent fire dragons and phoenixes charging at Dumbledore.

Grindelwald endured Dumbledore’s most powerful spells and revealed that he had arranged devastating fires across Europe and beyond. He called the destruction a gift and a revenge, leaving Dumbledore furious as Grindelwald’s larger plan remained unclear.

• Grindelwald controlled the magical flames and withstood five powerful spells from Dumbledore, bleeding but surviving.
• Grindelwald laughed and taunted Dumbledore, who said he was not alone in trying to change the world.
• Grindelwald conjured a silver barrier and directed a towering fire to erupt in Paris near the Aiken Family estate.
• Fires consumed family estates across Europe and reached North America, while Grindelwald called the destruction his fireworks for Dumbledore.
• Grindelwald said he had targeted people he considered unworthy and described the destruction as revenge for plots against him and his student.
• Dumbledore condemned Grindelwald for destroying the foundations of the world as Grindelwald laughed and continued his performance.

Grindelwald revealed that he had set delayed Fiendfyre traps against Pure-blood families, then fought Dumbledore in a fierce duel while Sean watched. Newt joined the battle to help Dumbledore arrest Grindelwald, leaving Sean afraid that the added attack would destroy any chance of reconciliation.

• Grindelwald told Dumbledore that he had prepared hidden, delayed Fiendfyre traps against Pure-blood families, and Dumbledore responded by raising his wand.
• Dumbledore and Grindelwald exchanged powerful spells and Transfigurations across Père Lachaise Cemetery while Sean watched helplessly.
• Sean joined Newt inside a smaller Protego Diabolica dome, and Newt explained that Dumbledore had asked him to help.
• Newt fired spells at Grindelwald and admitted that he had come to help Dumbledore arrest him, despite Sean's plea to let the duel continue fairly.
• Grindelwald used a red mirror to absorb Newt's spells, and the three-way battle intensified as he warned Dumbledore that he was in a terrible mood.

Sean tried to stop Grindelwald and Dumbledore’s duel, but Newt disarmed and outmaneuvered him while a hidden threat kept him from using the Obscurus. After Sean realized Ariana and Fawkes might be in danger and that a force of returning dead wizards could be behind the conflict, Grindelwald’s red mirror shattered and Dumbledore prepared to act.

• Sean disarmed Newt, but Newt blocked his spells with Stone Wall Demon Net and used sleeping powder and a Niffler to take Sean’s ring.
• Sean sensed a terrifying presence in the shadows and warned Grindelwald and Dumbledore, but they ignored him as Newt attacked Grindelwald’s red mirror.
• Sean tried to summon the Phoenix with Dumbledore’s feather, but it did not appear, leading him to suspect Ariana and Fawkes were in danger.
• Sean connected Dumbledore’s betrayal, the stolen key to The Otherworld, and the Pure-blood families to a hidden force of dead wizards returning from the past.
• Sean shouted about the Phoenix, but Grindelwald’s red mirror shattered, and Dumbledore turned toward him and raised another wand.

Dumbledore defeated Grindelwald with the Elder Wand, but Grindelwald ignited Paris before collapsing, leaving Dumbledore to contain the catastrophe. As Sean waited beside Grindelwald, Voldemort disguised as a guard attacked and revealed himself.

• Dumbledore used the Elder Wand to turn Grindelwald’s demonic flames against him, leaving Grindelwald badly burned and defeated.
• Grindelwald set Paris ablaze with a final gesture, and Dumbledore vanished to deal with the citywide fire.
• Grindelwald asked Sean to wait for Dumbledore’s explanation, while Sirius, James, and Newt kept the guard squad from taking Sean away.
• The Obscurus warned Sean of a strange, dangerous presence, then pulled him clear of a killing spell cast by the guard squad’s young wizard.
• Sean recognized the attacker as Riddle, who revealed himself as Voldemort and moved toward the fallen Grindelwald.

Voldemort forced his way through Dumbledore’s barrier and attacked Grindelwald, while Sean transformed into a gigantic, destructive creature and crushed Voldemort. Grindelwald’s voice helped Sean recover some awareness, but Sean remained trapped in the lava-like force of his own instincts.

• Sean fired a Killing Curse at Voldemort, who deflected it while advancing on Grindelwald behind Dumbledore’s barrier.
• Voldemort forced his way through the barrier, burned his hand and face, and crushed Grindelwald as he conjured the Dark Mark above Paris.
• A Fire Giant rose amid the flames in Paris, and the Aurors evacuated residents and injured people.
• Giant Sean scattered the Dark Mark, seized Voldemort, and crushed him, but Grindelwald stopped him from swallowing Voldemort.
• Sean began to regain awareness as he remembered Grindelwald, but he struggled against the destructive instincts overwhelming him.

Sean broke free from Sin by using the pain of having his Obscurus stripped away, then escaped Sin’s manifested form and reunited with Grindelwald. After Grindelwald departed and Dumbledore arrived, Voldemort’s Soul Fragment was shown fading away while silently mouthing words of thanks.

• Sean connected with Sin’s Obscurus, and the giant mouth began stripping Obscurus from both of them, leaving Sean in agony but clearing his mind.
• Sean broke free into Sky Island, shut the villa’s iron gate against Sin’s intrusion, and returned to Sin’s manifested form as the giant mouth attacked two investigating wizards.
• Sean destroyed the giant mouth and Grindelwald’s barrier, returned to his usual form, and treated the injured Grindelwald.
• Grindelwald told Sean he was leaving to remind Europe of the Dark Lord, praised Sean, and vanished; Dumbledore then arrived and confirmed that Sean had done well.
• In a forest near Père Lachaise Cemetery, Voldemort’s Soul Fragment dissipated while mouthing “Much obliged.”

Sean was questioned by the Wizarding United Guard about Grindelwald and the events in Paris, but Fudge and Lucius secured his release. Back at Newmontgard, Sean reunited with Hermione and Daisy, explained what had happened, and ended the night unable to sleep.

• Mark Pont questioned Sean about Grindelwald, his apprenticeship, and the Death Eaters, but Sean refused to give him anything useful.
• Fudge and Lucius arrived and persuaded Pont to release Sean because Dumbledore had vouched for him.
• Lucius privately addressed Sean as his master, and Sean told him to return while he made his own arrangements.
• Sean returned to Newmontgard and found Hermione and Daisy waiting; he reassured them that he, James, and Sirius were safe.
• Sean told Hermione and Daisy about the Fire Giant and the Death Eaters, then went to bed but could not fall asleep.

Sean analyzed the Guard, Dumbledore, Voldemort, and the hidden mastermind, then discovered Grindelwald had replaced his wand with a powerful branch he could wield perfectly. The next morning, Sean became the focus of attention at Newmontgard as a Guard investigator summoned him.

• Sean wrote down his theories about the Guard's motives, Dumbledore's involvement, Voldemort's attack, and the Obscurus-targeting Silent Mouth, and resolved to speak with Dumbledore and stop Voldemort's resurrection.
• Sean discovered Grindelwald had replaced his Elm Wand with a broken branch, which transformed to resemble his wand and worked smoothly while amplifying his spells.
• Sean set goals to strengthen himself, gather information, watch the Guard and Pure-blood families, and prevent Voldemort's return before falling asleep.
• Sean entered Newmontgard's Great Hall the next morning as students, faculty, and Guard members watched him, while George told him the Guard was investigating the professors.
• A middle-aged wizard with cold, sharp eyes approached Sean and ordered him to come with him.

Sean confronted Charlie Metelinke of the Wizarding United Guard, then learned that the press had branded Grindelwald a criminal and exposed the Death Eaters. After the Lestrange brothers were taken for questioning, the Guard arrived at Sean’s dormitory with an arrest warrant and accused him of leading the Death Eaters.

• Sean refused to answer Metelinke’s questions until the Guard had an official investigation order and arrest warrant.
• The Quibbler published an article condemning Grindelwald and reporting the Fire Giant’s destruction, while naming the Death Eaters as a suspected organization linked to him.
• Hermione worried that Grindelwald’s plans and the growing public backlash could lead to war, and Sean admitted Grindelwald was prepared to become the Dark Lord again.
• Sean realized that the exposed Death Eaters and his identity as their leader could give the Guard grounds to arrest him, especially if the Lestrange brothers revealed what they knew.
• The Guard arrested the Lestrange brothers for questioning, then Metelinke led armed wizards into Sean’s dormitory and presented a warrant accusing him of leading the Death Eaters.

The narrator went to the hospital for an evening follow-up check and was still waiting to go home. Seeing older men clutching their kidneys and groaning unexpectedly comforted the narrator.

• The narrator went to the hospital for a follow-up check in the evening.
• The narrator found the hospital crowded and remained there instead of going home.
• The narrator felt comforted after seeing older men clutching their kidneys and groaning.

Sean was nearly arrested by Metelinke’s guard squad, but Grindelwald’s switched wand revealed that Voldemort possessed his body. Sean and Vita Rosier staged a battle to frame Voldemort and clear Sean, leaving Sean collapsed after Rosier’s spell struck him.

• Metelinke and his squad confronted Sean and prepared to take him in, while Sean considered escaping.
• Professor McGonagall and Vita Rosier arrived, and Rosier warned Sean to discard his switched wand as McGonagall identified the possession.
• Sean transformed into Voldemort and fought the guard squad while Rosier and McGonagall attacked and restrained him.
• Sean realized Grindelwald had arranged the switch so Voldemort could take the blame, and he secretly joined Rosier in staging the fight.
• Sean used the Obscurus’s power to batter the guards, while McGonagall struggled to protect him and Metelinke was gravely injured.
• Rosier struck Voldemort with her healing spell, and Sean collapsed as the possession ended and his body returned to normal.

Sean recovered after Riddle’s soul was destroyed, and Professor McGonagall and Professor Rosier defended him from the guards’ demands for further questioning. Sean agreed to take Veritaserum in front of the professors, and Harry learned the guards planned to question him with it.

• Professor McGonagall protected Sean from the guards’ spells and used Healing Spells after Professor Rosier said she had killed Riddle.
• Professor McGonagall explained that Sean had been parasitized and defended him as an innocent victim while Mark Pont considered the guards’ losses and their failed attempt to obtain information about Grindelwald.
• Professor Rosier and Professor McGonagall argued that Sean’s resistance had saved the guards, while Sean hid his embarrassment at their praise.
• Sean agreed to take Veritaserum if the test happened in front of everyone, and Pont arranged for Professor Snape to bring it from England.
• Harry told Hermione and Daisy that the guards planned to question Sean with Veritaserum.

Hermione and Daisy feared Sean would face punishment over the Guard Corps incident and his illegal Animagus status, so Daisy sought Snape’s help. Snape secretly disguised a harmless potion as Veritaserum and brought it to Sean’s questioning, where his warning let Sean know he was helping him.

• Harry told Hermione and Daisy that Sean had been taken away and that the Guard Corps captain had been injured in an explosion.
• Hermione realized Sean’s illegal Animagus status and dangerous pets could cause further trouble, then learned the Guard Corps had summoned Snape to provide Veritaserum.
• Hermione distracted the guards while Daisy slipped out under the Invisibility Cloak to meet Snape at the castle gate.
• Snape used Imperio on the accompanying Guard Corps member, warmed Daisy, and gave her a disguised potion to use in Sean’s interrogation.
• Snape brought the potion to the Vice Principal’s office and warned Sean that he might share Veritaserum with his friends and his first-year girlfriend, letting Sean infer that Snape was helping him.