Chapter Summaries

Karkaroff panicked after Barty Crouch Sr. broke free of the Imperius Curse and urged Will to flee Hogwarts, but Will insisted on carrying out the professor’s orders. Karkaroff then tried to trick Will into killing Crouch, and Will exposed his scheme and dismissed him.

• Karkaroff feared Dumbledore, the Wizengamot, and Voldemort would learn of his involvement once Crouch woke up, so he urged Will to escape.
• Will refused to leave Hogwarts before completing the professor’s orders and went to check on Crouch in the Hospital Wing.
• Madam Pomfrey reported that Crouch was malnourished and mentally unstable, while Harry and Krum had no serious injuries.
• Karkaroff pulled Will aside and proposed that they kill Crouch, claiming it would protect the professor’s plan.
• Will saw through Karkaroff’s attempt to make him take the risk, accused him of malice and cowardice, and ordered him away.

Will told Dumbledore that Karkaroff wanted him to kill Crouch, and they agreed to alter Crouch’s memories to protect their plans. Afterward, Will returned to the Room of Requirement to check on the Felix Felicis, which was nearing completion.

• Karkaroff left after Will confronted him, and Will went to Dumbledore’s office to report that Karkaroff had asked him to kill Crouch.
• Will suggested altering Crouch’s memories and possibly faking his death so he could take Barty Crouch Jr.’s place in the time-travel plan.
• Dumbledore altered Crouch’s memories in the Hospital Wing, leaving him likely to forget everything since the Quidditch World Cup.
• Will decided to tell Voldemort that Crouch had escaped but could not reveal anything useful because his memories had been altered.
• Will went to the Room of Requirement and found that only ten cauldrons of Felix Felicis remained to finish brewing.

Will brewed an Invigoration Draught while Snape told him to come to his office, and Voldemort learned from Lucius that Dumbledore was searching for things connected to him. Dumbledore then summoned Harry and gave him something, leaving its contents unexplained.

• Snape criticized Harry and Neville during Potions, praised Will’s brewing, and asked Will to visit his office after class.
• Voldemort confronted Barty Crouch Jr. over failing to prevent Barty Crouch Sr. from breaking free of the Imperius Curse.
• Lucius delivered Severus’s report that Dumbledore had been leaving Hogwarts to search for things connected to Voldemort.
• McGonagall told Harry that Dumbledore wanted to see him, and Harry went to the Headmaster’s Office.
• Dumbledore asked Harry about his health and scar, then handed him something.

Dumbledore gave Harry an insole that he believed was a Portkey, though it was actually an anchor that would let Dumbledore reach him. Will urged Fred and George to stay in school and later wrote Professor Riddle about the insole, helping set a trap for Voldemort’s side.

• Dumbledore gave Harry the insole, and Strange recognized it as an alchemical anchor for Dumbledore rather than a Portkey to Hogwarts.
• Will greeted Pheobe by the Black Lake and then advised Fred and George against gambling after they told him Ludo Bagman had refused to repay their debt.
• Fred and George revealed they planned to leave school after fifth year to open a joke shop, and Will tried to tempt them to stay by mentioning a possible new Potions teacher.
• Will returned to the Room of Requirement and wrote Professor Riddle a letter about the insole, planning to pass it along later as part of a trap for Voldemort’s side.

Will brewed Felix Felicis and joined Dumbledore and Harry at a cliff where Dumbledore believed Voldemort had hidden a Horcrux. After explaining what a Horcrux was, Dumbledore led them toward an entrance in the cliff.

• Will finished brewing Felix Felicis and prepared to test transfiguring it into a charm, intending to use Karkaroff as his test subject.
• Dumbledore invited Will to join him and Harry, and they traveled to a cliff overlooking the sea.
• Dumbledore explained that he had found clues leading to a Horcrux hidden at the cliff and told Harry how Horcruxes preserved Voldemort's life.
• Will gave Felix Felicis to Dumbledore and Harry, and all three drank it.
• Dumbledore cast a Bubble-Head Charm over them and conjured a staircase down the cliff face.

Will, Harry, and Dumbledore reached the hidden chamber holding Voldemort’s Horcrux, but Will prevented Dumbledore from using his own blood to open the entrance. As they approached the basin at the lake’s center, thousands of Inferi rose from the water and attacked.

• Dumbledore found the concealed entrance and determined that it required a wizard’s blood, but Will warned him against using their own.
• After animal blood failed, Dumbledore returned with blood and opened the passage into the chamber.
• Dumbledore summoned the enchanted boat, which could carry only one wizard, and Will flew above it while Harry and Dumbledore crossed the lake.
• At the lake’s center, Harry and Dumbledore saw a stone basin filled with emerald-green liquid.
• Inferi rose in great numbers, and Will cast Incendio at them as they surged toward the group.

Harry, Will, and Dumbledore fought through the Inferi guarding the lake, and Dumbledore destroyed them with powerful fire magic. They reached the island and found the Horcrux hidden beneath an emerald potion, which Dumbledore and Will began examining.

• Harry and Will fought off the Inferi attacking their boat, while Will used fire and Sectumsempra to protect them.
• Dumbledore cast Protego Diabolica and Lava Fire, burning thousands of Inferi and clearing a path across the lake.
• The three crossed the lake to the island and found an emerald-green liquid in a stone basin, with the Horcrux beneath it.
• Dumbledore said the potion could not be poured out and that drinking it was the only way to reach the Horcrux.
• Harry offered to drink the potion, but Dumbledore refused and began examining it with Will.

Will, Harry, and Dumbledore drained the basin’s potion with Grindylows and recovered a Locket that Will knew was fake. Before they left the cave, Will pointed out a corpse in the lake, and Dumbledore identified it as Regulus Black.

• Will warned that the potion caused severe hallucinations and suggested using Fantastic Beasts to drink it.
• Dumbledore returned with Grindylows and made them consume the potion until the basin was empty.
• The group found a golden Locket at the bottom of the basin, and Dumbledore said he would examine it.
• Will spotted a corpse underwater, and Dumbledore brought it ashore.
• Dumbledore identified the corpse as Regulus Black, leaving Harry stunned to learn that Sirius had a younger brother.

Dumbledore brought Regulus Black’s body to 12 Grimmauld Place, where Sirius learned that his brother had died trying to steal and destroy one of Voldemort’s Horcruxes. Kreacher revealed that he had kept the real locket, leaving Sirius stunned by Regulus’s sacrifice.

• Dumbledore wrapped Regulus’s body and brought him, Harry, and Will to the Black family home.
• Sirius saw Regulus’s body and reacted with anger and grief.
• Kreacher mourned Regulus and argued with Sirius over how he had treated his brother.
• Kreacher revealed the real locket and explained that Regulus had switched it for a fake after rescuing him from the cave.
• Dumbledore showed Sirius images of the cave, and Kreacher explained that Regulus had discovered the locket’s importance and sacrificed himself to take it.

Sirius mourned Regulus after learning that his brother had sacrificed his life to oppose Voldemort and save Kreacher. Three days later, they buried Regulus in Godric's Hollow, where Harry and the gathered mourners honored his courage.

• Sirius grieved over Regulus's body and thanked Harry, Dumbledore, and Kreacher for bringing him back.
• Sirius chose to bury Regulus in Godric's Hollow near James and Lily, and Harry agreed.
• Dumbledore, Harry, Will, and others passed a monument to Harry's parents on their way to Regulus's funeral.
• Sirius laid flowers on Regulus's grave and apologized for failing to understand or help his brother.
• Harry placed lilies at the headstone, and Dumbledore led everyone in three minutes of silence.

Will visited Karkaroff aboard the Durmstrang Ship and showed him two bottles of Felix Felicis that he had brewed himself. Karkaroff was astonished, and Will offered him one bottle to test its effects.

• After Regulus's funeral, Dumbledore brought Will and Harry back to Hogwarts, while Kreacher handed over the Horcrux.
• Several days later, Hagrid warned Will to avoid the Durmstrang students because they studied Dark Magic.
• Karkaroff led Will into the Durmstrang Ship, which contained an expansive castle-like interior.
• Will sealed Karkaroff's office against eavesdropping before revealing two bottles of Felix Felicis.
• Karkaroff reacted with disbelief when Will said he had brewed the potion himself, and Will offered him a bottle to try.

Will forced Karkaroff to agree to serve as the subject of his Potion Transfiguration experiments after Karkaroff drank Felix Felicis. The chapter ended with Will preparing to begin the experiments immediately.

• Karkaroff drank Will’s Felix Felicis and eagerly accepted the offer of more, until Will revealed he wanted to experiment on him.
• Karkaroff refused and ordered Will to leave, but Will struck him with an invisible force and disarmed him.
• Will transformed the office’s battle-axes into chains, restrained Karkaroff, and caused a painful transformation in his hand.
• Will explained that Karkaroff could cooperate with the experiments or face more drastic measures, and Karkaroff reluctantly agreed.
• Will kicked Karkaroff’s wand aside and said they would begin the experiments at once.

Will continued studying how to transfigure Felix Felicis while Dumbledore discussed the Horcruxes with him. Meanwhile, Voldemort ordered Yaxley to prepare an assault on the Department of Mysteries and secure the Time-Turner.

• Will left the Durmstrang Ship after studying Karkaroff, whom he regarded as a guinea pig and planned to eliminate.
• Will told Dumbledore that Felix Felicis Transfiguration was proving difficult, and Dumbledore warned him to keep some of the potion ready and beware Karkaroff.
• Dumbledore explained that he had found few clues about Voldemort's Horcruxes beyond the diary and Slytherin's Locket.
• Will suggested that Voldemort might have made all his Horcruxes as important to him as Slytherin's Locket, prompting Dumbledore to reconsider his search.
• Voldemort ordered Corban Yaxley to organize a raid on the Department of Mysteries and secure the Time-Turner, with Will acting alongside him.

Will spent a rare day off in Hogsmeade with Sylvia, while Karkaroff prepared to expose Will and Yaxley organized a Death Eater operation to steal Time-Turners from the Department of Mysteries. The chapter ended with the Death Eaters poised to carry out the plan for Voldemort.

• Will and Sylvia shared lunch at the Echoing Fireplace Restaurant, where Sylvia noticed he had lost weight and asked what he would do after the Triwizard Tournament.
• Will promised Sylvia that his busy schedule would ease after he finished his current work, and they discussed his plans to rest and continue studying magic.
• Karkaroff considered sending Rita Skeeter letters accusing Will of being Voldemort's disciple and a Death Eater, and decided to send a copy to Dumbledore as protection.
• At Malfoy Manor, Lucius showed Yaxley a map of the Department of Mysteries and identified the Time Room where the Time-Turners were kept.
• Yaxley outlined a plan for the Death Eaters to distract the Aurors, enter through an underground passage, take the Time-Turners, and deliver them to Voldemort's chosen people.

Will continued experimenting on Karkaroff while keeping up appearances in class, then received a message from Voldemort ordering him to protect the Diary. Since Will had destroyed the Diary long ago, he wondered how to respond without revealing the truth.

• Snape reprimanded Harry for brewing a potion badly and found Will asleep in Potions Class while Sylvia practised.
• Will continued his spell experiments on Karkaroff, carefully pacing his use of Felix Felicis.
• Malfoy delivered a letter from Will’s family and said his Occlumency was still only ordinary; Will warned him to prepare for danger next school year.
• Will and Sylvia returned to the Room of Requirement, where Will read Voldemort’s message: “Will, keep the Diary safe.”
• Will realized Voldemort was searching for his Horcruxes and considered how to explain that he had already destroyed the Diary.

Will told Dumbledore that Voldemort had asked about the missing diary, and Dumbledore revealed Karkaroff’s anonymous accusation against Will. While Will prepared to deal with Karkaroff after the Triwizard Tournament’s third task, Lucius and Voldemort learned of the accusation too.

• Will explained to Dumbledore that he had lost the diary during the attack in Egypt, and Dumbledore said Voldemort was taking inventory of his collection before returning.
• Dumbledore showed Will an anonymous letter accusing him of being Voldemort’s apprentice and a Death Eater spy, and Will identified Karkaroff as the likely sender.
• Dumbledore advised Will to wait until after the third task before dealing with Karkaroff and said he would speak with him in the meantime.
• Rita Skeeter brought Lucius Malfoy an anonymous letter containing the same accusation, and Lucius took it from her without allowing her to publish it.
• Lucius deduced that Karkaroff was likely behind the letter and went to report the matter to Voldemort.
• Karkaroff waited aboard Durmstrang’s ship, unaware that Dumbledore and Voldemort had both added him to their lists.

Lupin warned Dumbledore that werewolves planned to attack Diagon Alley, and the chapter revealed that Yaxley had hired Fenrir Greyback to cause chaos during the Triwizard Tournament’s final task. Greyback rallied dozens of werewolves in Newham, while two people secretly watched the gathering.

• Lupin hurried into Dumbledore’s office and warned him that werewolves planned to attack Diagon Alley.
• Yaxley gave Greyback Galleons and promised that Voldemort’s return would let werewolves live openly in exchange for causing chaos during the Triwizard Tournament’s final task.
• Greyback agreed to attack Diagon Alley and create as many new werewolves as possible.
• Greyback rallied dozens of werewolves in Newham and urged them to take revenge on wizards.
• Two people at the edge of Greyback’s crowd exchanged a glance without being noticed.

Lupin told Dumbledore that werewolves planned to cause chaos in Diagon Alley, part of Voldemort’s scheme to distract the Ministry while targeting the Department of Mysteries for the Time-Turner. Will warned that alerting Fudge could expose their intelligence to Death Eaters, and Dumbledore agreed to keep the warning from him while preparing the Order in secret.

• Lupin explained that his Informant in the Werewolf Mutual Aid Association had reported Fenrir forcing werewolves to join a gathering, and that they planned to attack Diagon Alley.
• Will concluded that Voldemort was coordinating distractions, including the werewolf attack, while planning to seize the Time-Turner from the Department of Mysteries.
• Dumbledore drafted warnings to Fudge and Moody, then told Lupin to keep the werewolves hidden and take no further action.
• Will argued that Ministry officials who were Death Eaters might learn of the attack if Fudge was warned, so Dumbledore decided not to send him the letter.
• Dumbledore planned to rely on Moody and the Order to prepare, while accepting that Fudge might accuse him of seeking political power.

After learning that Karkaroff had sent documents to Rita Skeeter, Will confronted and placed him under the Imperius Curse, then used him as a test subject while researching Felix Felicis. By May, Will’s research was still failing, and he interrupted an experiment to stop a fight between Durmstrang and Beauxbatons students.

• Lucius told Will that Karkaroff had sent documents to Rita Skeeter and offered to deal with him.
• Will confronted Karkaroff aboard the Durmstrang ship, showed him the letter, and cast the Imperius Curse on him.
• Will gave the controlled Karkaroff Felix Felicis and continued using him for experiments while studying the potion’s magical structure.
• Will spent the following months immersed in research, but his forty-second attempt to study the Felix Charm failed.
• Will spotted Durmstrang and Beauxbatons students fighting by the Black Lake and sent Karkaroff to order the Durmstrang students back to their ship.

Will finally stabilized the core of his new perception-enhancing spell after more than a hundred failures, then discovered that Dumbledore had made him a portable library. The chapter left Will exhausted but with a new magical breakthrough and a gift from Dumbledore.

• Karkaroff forced the Durmstrang students to return to their ship and apologized to Madame Maxime, while his students grew angry at his submissive behavior.
• Will continued using Karkaroff as a test subject while developing the Felix Charm and recording a long series of failed experiments.
• On June 2, Will constructed a stable core component for the spell on Karkaroff and received confirmation that he had created a new spell.
• After Will returned to the Room of Requirement to rest, Dumbledore arrived with a case and showed him the portable library he had made with Scamander's help.