Chapter Summaries

William brought Lupin the Wolfsbane Potion and discussed his belief that Peter Pettigrew was still alive. As Harry practiced the Patronus Charm, William received a warning that Ludo Bagman was coming to Hogwarts and saw the Boggart kissing Harry.

• William delivered Lupin’s potion, which Lupin drank, while Harry mistakenly thought it was medicine to strengthen Lupin’s kidneys.
• Lupin talked about his former Potions Professor, Slughorn, and asked William whether he still believed Peter Pettigrew was alive; William said he did.
• Lupin began reflecting on the Marauders and his failure to investigate Sirius’s case while Harry resumed practicing the Patronus Charm.
• William read a letter from Bertha Jorkins warning that Ludo Bagman would be coming to Hogwarts.
• Harry’s Patronus attempt failed, and the Boggart, disguised as a Dementor, kissed him while Lupin and William were distracted.

Harry was hospitalized with swollen lips after a Boggart mimicked a Dementor’s Kiss, and rumors about his supposed kissing spree spread through Hogwarts. Later, Professor McGonagall brought William news that Ludo Bagman would inspect and register his Quidditch maneuver, while warning him about the Triwizard Tournament, the Wimbourne Wasps, and Ludo’s gambling.

• Harry begged William and Lupin to conceal that a Boggart had caused his swollen lips, but rumors claimed he had kissed an unidentified man for a day and night.
• Professor McGonagall delivered Firebolts and Hermione’s Invisibility Cloak after the items had been checked for charms.
• Ron volunteered to test Harry’s Firebolt because Harry could not leave the Hospital Wing.
• Professor McGonagall told William that Ludo would inspect and register his Quidditch maneuver that afternoon.
• William guessed that Dumbledore and Ludo were discussing reviving the Triwizard Tournament, and McGonagall told him the matter was still secret.
• McGonagall warned William not to join the Wimbourne Wasps or wager with Ludo, who owed her money from past bets.

Ludo Bagman visited Hogwarts and invited William to join the Wimbourne Wasps, then discussed betting on the Quidditch World Cup. William decided to wager five thousand Galleons against the Goblins, planning to use Nicolas’s visions to win enough money to buy the club, but Hermione held the vault key.

• Ludo Bagman arrived at Hogwarts and took William to the Quidditch Pitch while students followed.
• Ludo told William he planned to give his Department of Magical Games and Sports colleagues time off before the Quidditch World Cup, leaving Barty Crouch’s department busier.
• Ludo invited William to join the Wimbourne Wasps and asked which team he favored in the World Cup.
• William learned that Goblins bet on Quidditch and decided to wager five thousand Galleons with them on the first match.
• William planned to use Nicolas’s visions to win the Goblins’ money and buy the Wimbourne Wasps, but Hermione had the vault key.

William refused Ludo's requests to recruit him for the Wimbourne Wasps and train the national team, but discussed betting with him. Gryffindor beat Hufflepuff and reached the final, while Harry brooded over Cho comforting Cedric; the celebration ended when Ron announced that Scabbers was dead.

• Ludo tried to recruit William for the Wimbourne Wasps and asked him to train the national team's Chasers, but William refused both offers and discussed betting with him.
• Gryffindor narrowly beat Hufflepuff, with Harry catching the Golden Snitch and securing a place in the final against Ravenclaw.
• Harry saw Cho comforting Cedric after the match, grew jealous, and tried to confront him before Fred, George, and Wood stopped him.
• William joined Gryffindor's celebration and quietly planned with Hermione to visit the Forbidden Forest that night because the Acromantulas had found traces of Dahei.
• Ron burst into the celebration carrying a dead rat and announced that Scabbers was dead.

Ron blamed Hermione and William for Scabbers’s death, while Hermione called him an idiot and left with William. Later, William, Hermione, and Anne sneaked to Hagrid’s hut, where Hagrid struggled to read the defense statement for Buckbeak.

• Ron accused Hermione and William of causing Scabbers’s death and insisted the rat had been ordinary.
• Hermione argued that someone had switched Scabbers, then called Ron an idiot and left the common room with William.
• Fred, George, Harry, and Ginny tried to comfort Ron, who refused an offer to buy him an owl and defended his new groundhog.
• William, Hermione, and Anne used the Invisibility Cloak to sneak out to Hagrid’s hut.
• William, Hermione, and Anne heard Hagrid stumbling through the defense statement they had written for Buckbeak.

William and Hermione took Anne into the mountains to find Black, who had been living alone in a cave and starving. When Anne called him Dahei, Black stopped running and cried in the rain.

• William exchanged herbs and materials with Ronan, who shared a cryptic prophecy about dark clouds gathering again.
• After leaving the carriage and Acromantulas behind, William flew with Hermione and Anne toward the mountain where the spiders had located Black.
• Black trapped and ate a rat, reminisced about his time with William, Hermione, and Anne, and feared they would not believe his story.
• William, Hermione, and Anne reached Black's cave, and Black transformed into a dog and ran outside, expecting Aurors and Dementors.
• Anne called Black Dahei, and he cried in the rain before deciding he would stop running.

William captured Black and questioned him in a cave, where Black explained how he escaped Azkaban and why he believed Peter Pettigrew was alive. He admitted that he had secretly made Peter the Potters’ Secret Keeper, leaving the others to confront his account without yet establishing proof of his innocence.

• William restrained the black dog, transformed him into Black, and brought him into a cave with Hermione and Anne.
• Black said Peter Pettigrew was alive as Scabbers, the rat living with the Weasley family’s youngest son.
• Black explained that Fudge had brought Malfoy to visit him, and a newspaper Malfoy left behind showed Scabbers on Ron’s shoulder.
• Black said he escaped Azkaban after recognizing Peter in the newspaper, then admitted he had accidentally gone to France because he had a poor sense of direction.
• Black revealed that he had persuaded James to make Peter the Potters’ Secret Keeper, while suspecting Remus and withholding the change from Dumbledore.

Black explained how he had secretly made Peter Pettigrew the Secret Keeper for James and Lily, then spent twelve years in Azkaban after Peter framed him and escaped. William and Hermione revealed that Peter had escaped their earlier attempt to expose him, and the chapter ended with William briefly suspecting Peter might be disguised as Ron before the map disproved it.

• William questioned Black about why James and Lily had chosen him rather than Dumbledore, and Black explained that they wanted to protect Dumbledore and keep the Fidelius Charm working while they fought for the Order of the Phoenix.
• Black said he had secretly switched the Secret Keeper to Peter, then found Peter after James and Lily died; Peter blew up a street, framed Black, and escaped while Black accepted imprisonment without a trial.
• William and Hermione told Black that Scabbers had died, but William explained that the rat they had examined at Christmas was real and Peter had likely switched places with him.
• Black suggested using the Marauder's Map to find Peter, and William showed him an improved map based on it; they realized Peter had probably erased his name or left Hogwarts.
• William wondered whether Peter had used Polyjuice Potion to become Ron, but the map showed Ron and Harry moving around their dormitory, so he dismissed the idea.

William and Hermione hid Sirius inside the Safety Watch while misleading Fudge about his whereabouts. William agreed to take Sirius back to Hogwarts, where Peter was still hiding, and suspected Tom would arrange a death before Peter could escape.

• Sirius ate with frantic hunger while Anne ignored him, and he teased Hermione about her cooking until she threatened William with a glare.
• William and Hermione wrote to Fudge, implying that Sirius had gone to France, and William told Sirius that Buckbeak could be moved safely without being stolen.
• Sirius explained that he had obtained money from his uncle Alphard’s vault and asked to see Harry, but William refused because Harry would not believe him without proof against Peter.
• William gave Sirius the Werewolf’s wand and told him to stay hidden before taking him back to Hogwarts.
• Sirius hoped they would catch Peter, while William thought Tom had prepared escape plans and wondered who would die this time.

William learned that Buckbeak had been sentenced to death, but he reassured Hagrid that Dumbledore would protect him. On the way back to the castle, Hermione stood up for Hagrid by slapping Malfoy and driving him away.

• William and his friends visited Hagrid, who blamed himself for failing to defend Buckbeak at the hearing.
• Harry and Ron promised to help with a new appeal, but Cho reminded them they had abandoned the research earlier.
• William told Hagrid that Dumbledore would make sure Buckbeak came to no harm.
• Malfoy mocked Hagrid and Buckbeak as the group approached the castle.
• Hermione slapped Malfoy and challenged Crabbe and Goyle, and Malfoy retreated with them.

After the Easter holidays, Gryffindor players Harry, Wood, and Ron were caught sneaking into Hogsmeade and punished, putting more pressure on the team before its Quidditch final against Ravenclaw. On the eve of the match, Penelope asked William whether Ravenclaw would win because she had bet Percy thirty Galleons.

• The students returned from the Easter holidays to a heavy backlog of homework, while William helped Lee's reference answer studio with answers.
• Gryffindor prepared nervously for its final against Ravenclaw, hoping to end its long championship drought before Wood graduated.
• Tonks caught Harry, Wood, and Ron at the gnome footbath shop after they secretly went to Hogsmeade.
• Professor McGonagall docked Harry two hundred points and Wood and Ron fifty points each, leaving Gryffindor at minus 700 points; Ron also received detention and angry Howlers from Mrs. Weasley.
• On the eve of the final, Penelope asked William if Ravenclaw could win because she had bet Percy thirty Galleons.

Ravenclaw and Gryffindor prepared for the Quidditch final as Ludo tried to recruit William to show off his special move to England’s national players. Hermione gave William a badge before the teams took to the air, leaving the match just beginning.

• Ravenclaw received cheers from Hufflepuff and Slytherin, while Gryffindor displayed its two Firebolts and McLaggen bragged about them.
• Ludo told William he had brought two England National Team Chasers to watch and urged him to use his special move, then advised him to bet on England.
• Hermione gave William a badge showing a sea eagle and a white swan, and he wore it as he left for the pitch.
• Lee Jordan introduced the teams amid cheers and boos, and Madam Hooch started the final.
• William, Angelina, and Harry raced ahead on their Firebolts as William carried the Quaffle.

William led Ravenclaw’s attack against Gryffindor in the Quidditch final, while Harry and Angelina tried to contain him with their Firebolts. After Angelina was struck by a Bludger, William rescued her, then outmaneuvered Gryffindor’s defense and scored against Wood.

• Gryffindor used Harry and Angelina to double-team William, while Lee described the Firebolts’ speed during the match.
• Fred and George combined their Beaters’ hits to send a Bludger at William, who dodged it with a Sloth Grip Roll.
• The Bludger struck Angelina and knocked her off her broom, but William caught her robes and brought her safely to the ground.
• Madam Pomfrey treated Angelina, who recovered and returned to the match, though she remained dazed.
• William repeatedly challenged Wood, reclaimed the Quaffle after two saves, and scored when Wood guarded the wrong hoop.

William led Ravenclaw to victory over Gryffindor after scoring repeatedly, while Cho delayed Harry’s pursuit of the Golden Snitch. Harry caught the Snitch, but Ravenclaw won by 160 points, and William left the pitch with Hermione.

• Angelina’s concussion slowed Gryffindor, so Wood changed tactics and had Harry focus on catching the Golden Snitch while William continued scoring for Ravenclaw.
• Harry spotted the Snitch near Gryffindor’s goal but hesitated to collide with Cho, then mistook her teasing for a hint and became distracted.
• William scored a penalty shot after Fred struck his broom, and Cho spotted the Snitch over Ravenclaw’s half of the pitch.
• Cho collided with Harry, then kicked her strained Nimbus 2000 to catapult Harry away from the Snitch before leaping clear.
• Harry chased the Snitch while William scored the final goal; Harry caught the Snitch too late to prevent Ravenclaw’s 160-point victory.
• William checked on the injured Cho, then flew away with Hermione while Anne watched angrily from the Gryffindor stands.

After Ravenclaw’s championship, William and his classmates prepared for final exams, with Cedric, the twins, Percy, and Hermione all facing their own study pressures. William earned top marks in several tests, and the chapter left off with Lupin rushing to check on students who had embraced a ghost during the Defence Against the Dark Arts exam.

• Ravenclaw celebrated its championship, and Cedric sold William portrait badges to help fund a Firebolt for Cho.
• Cedric, Fred, and George studied for their O.W.L.s, while Percy prepared for his N.E.W.T.s and Hermione made Anne and William study with her.
• William told third-years that the entire Ancient Runes book could appear on the exam, prompting many of his visitors to stay away.
• McGonagall gave William full marks in Transfiguration after he changed a bronze eagle into a golden lion, and Flitwick’s Summoning Charm test ended with Eloise’s Bludger injuring students and knocking out McLaggen.
• William earned full marks in Snape’s Potions exam by brewing an antidote for Acromantula venom, while Binns tested the students on the Goblin Gem’s possible hiding places.
• William completed Lupin’s outdoor Defence Against the Dark Arts course fastest and told Lupin that several Gryffindors had embraced the final ghost, sending Lupin rushing over in alarm.

William took his Divination exam with Professor Trelawney, who gave him an excellent mark after he offered her more sherry. She then fell into a prophetic trance and warned that the Dark Lord would rise with his servants and that three traitors would bring death, but afterward she seemed not to remember the prophecy.

• William complained that the other professors had scheduled his Ancient Runes practical exam last, then went to the North Tower with Cho.
• Cho came out of Professor Trelawney’s exam unhappy after being warned she might nearly drown next school year.
• William answered Trelawney’s astrology questions by repeating what Ronan had said and offered her more sherry, earning an O.
• Professor Trelawney entered a trance and prophesied that the Dark Lord would rise with his servants and that three traitors would bring death.
• Trelawney denied remembering the prophecy and told William not to joke about the Dark Lord.

William and Hermione helped Hagrid save Buckbeak from execution while Fudge secretly let them take the Hippogriff. As they returned to the castle, they learned that Harry and Ron had caught Peter Pettigrew.

• William tested his Ancient Runes students, gave Hermione 120 points, and accepted her offer to help mark papers.
• William and Hermione visited Hagrid on the night of Buckbeak’s scheduled execution and found Harry and Ron there.
• Fudge arrived with Dumbledore and the execution party, then distracted Macnair while William and Hermione untied Buckbeak.
• William and Hermione hid Buckbeak in the Safety Watch and returned toward the castle as the execution party discovered the missing rope.
• Anne told William and Hermione that Harry and Ron had caught Peter Pettigrew.

After Peter was captured at Hogwarts, Dumbledore brought Sirius in to confront him and revealed that Peter had betrayed the Potters and hidden as a rat for twelve years. Peter admitted he had served Voldemort out of fear, while Fudge planned a new Wizengamot trial and execution.

• Fudge questioned Peter about how he had survived, while Harry and Ron explained that they had found and subdued him.
• Dumbledore arrived with William, Hermione, and Anne, then summoned Sirius to confront Peter.
• Dumbledore revealed that Peter was an illegal Animagus who had hidden with the Weasley family, and Sirius accused him of betraying the Potters as their Secret Keeper.
• Snape demanded Veritaserum, while Peter confessed that he had betrayed them because he feared Voldemort.
• Harry, Ron, and Sirius called for Peter's death, but Fudge said Peter would face a new Wizengamot trial; William watched, unsettled by the night's strange events.

William realized that the Ron who had accused Peter was actually Peter in disguise, while the captured man was the real Ron. He and Hermione raced to stop Peter from escaping before Sirius was blamed for murder.

• After Harry and Ron left, William asked Ron about the tonic and learned he claimed to have given it to Scabbers.
• William explained to Hermione that the tonic contained Amortentia, which would have affected Peter, so Ron’s claim could not be true.
• William and Hermione concluded that Peter had used Polyjuice Potion to impersonate Ron and had been carrying the real Ron in groundhog form.
• William checked the Hogwarts map and found the real Ron with Sirius Black and Severus Snape in Professor McGonagall’s office.
• William deduced that Peter had wanted Ron killed while transformed so he could take Ron’s place, but Fudge’s demand for a trial had disrupted the plan.
• William and Hermione realized Peter was escaping and hurried to catch him before Sirius was framed for murder.

William and Hermione discovered that Peter had escaped while disguised as Ron, and William rushed to Professor McGonagall’s office after an explosion. There, Ron transformed back from Peter’s disguise, leaving Fudge to suspect that the affair had been engineered to ruin him.

• William and Hermione found Harry alone in the fifth-floor bathroom and learned that Ron, disguised as Peter, had vanished.
• William and Hermione searched both bathrooms, but Peter had escaped through a toilet; Lupin arrived and said Sirius and Snape were watching him in McGonagall’s office.
• After an explosion sounded, William told Lupin to protect Harry and hurried with Hermione toward the office; Harry then told Lupin that he might know where Peter was hiding.
• William reached the office and found Snape attacking an unconscious Sirius, then asked Dumbledore to speak privately about Peter and Ron.
• Ron transformed in front of Dumbledore, Fudge, and the others, revealing that Peter had used Polyjuice Potion to impersonate him.
• Fudge realized that the supposed capture of Peter could not be used to discredit Crouch and suspected that Sirius and Dumbledore had set a trap to force him from office.