Chapter Summaries

Douglas was summoned to the Headmaster's Office after Dementors entered Hogwarts, where Fudge and Dolores Umbridge challenged the school over the incident and the disappearance of Dementors. Douglas ignored Umbridge's demand for an explanation and stared at Fudge as the confrontation continued.

• Douglas arranged for Dobby to send Bill wooden plaques that would automatically cast the Shield Charm three times against powerful Dark Magic.
• Fudge and Umbridge blamed the students' Patronus Charms for interfering with the Dementors, while Douglas said happiness at the Quidditch pitch had drawn them in.
• Douglas recognized Umbridge as the Ministry official who had signed the order banning his new book.
• Dumbledore rebuked the Ministry officials for standing while questioning Hogwarts staff and credited Douglas's lessons with protecting the students.
• Umbridge demanded that Douglas explain why his Patronus had interfered with two Dementor searches, but Douglas ignored her and looked to Fudge.

Douglas challenged Umbridge over the Dementors’ invasion of Hogwarts and suggested they might be escaping Ministry control, prompting Fudge to leave and distance the Ministry from their disappearance. Afterward, George and Fred heard that Professor Holmes’s dog was named Padfoot and hurried off with Harry, leaving their reason unclear.

• Umbridge thanked Fudge for recognizing her, and Douglas asked whether she had authorized more than a hundred Dementors to enter Hogwarts.
• Douglas questioned the official explanation for the invasion and warned that missing Dementors might be seeking freedom from the Ministry’s control.
• Fudge promised Dumbledore that the Dementors would not enter Hogwarts again and confirmed that the school had nothing to do with their disappearance.
• Dumbledore asked Douglas what he planned to do, and Douglas said he was waiting for Harry and the others to discover the truth.
• After Gryffindor lost its Quidditch match, Harry told George that Professor Holmes’s dog was called Padfoot.
• George and Fred exchanged a startled look, then rushed off with Harry when they learned Professor Holmes had brought Padfoot to the match.

George and Fred decided to give Harry the Marauder's Map, convinced Douglas Holmes had made it and intended them to pass it on. They explained how they had found the map and prepared to reveal it to Harry, but the chapter ended before they showed him its secret.

• George and Fred asked Harry whether Professor Holmes had pets named Prongs, Moony, or Wormtail, then fled with him from Mr. Filch.
• George and Fred retrieved the Marauder's Map and recalled how Douglas Holmes's name and the Defense Against Dark Magic office had vanished from it.
• After Harry said Douglas's dog was called Padfoot, George and Fred became nearly certain Douglas had made the map and chose Harry as its next recipient.
• George and Fred invited Harry into their Dormitory and presented a piece of old parchment as an early Christmas present.
• George and Fred told Harry they had taken the parchment from Filch's confiscated-items cabinet, but the chapter ended before they explained or demonstrated its secret.

George and Fred showed Harry the Marauder's Map and convinced him to win it through a rigged fragment-draw ritual. Harry kept paying after his first three draws left him seven orange fragments short of the map, while the twins secretly enjoyed taking revenge on Douglas.

• George revealed the Marauder's Map to Harry and explained that it showed Hogwarts and everyone's locations in real time.
• Fred and George told Harry the map could only be obtained through the maker's prize-draw ritual, costing one Galleon per draw.
• Harry paid one Galleon and drew eight red fragments, then paid again and drew one more red fragment.
• Harry paid for a third draw and received three orange fragments, learning he needed seven more orange fragments to claim the map.
• George and Fred privately celebrated their scheme as revenge on Douglas, whose box had taught them to distrust gambling.

Harry spent his Galleons trying to win the Marauder's Map from Fred and George's rigged prize draw, then borrowed money from Dobby when he ran out. Sirius stopped Wangcai from taking Dobby's pouch, leaving Harry unaware of the creature's attempt to reclaim its treasure.

• Harry won successive Orange Map Fragments and then paid an extra Galleon to roll a die for multiple draws.
• Harry spent his money frantically, progressed to Purple Map Fragments, and ran out of Galleons with three fragments still needed.
• George and Fred urged Harry to borrow money from Professor Holmes, so Harry went to Douglas's office and asked Dobby for Galleons.
• Dobby gave Harry his pouch of twenty-three Galleons, but Wangcai tried to take it back while Sirius watched.
• Sirius pulled Wangcai away from the pouch and shook its hidden Galleons and treasures onto the floor, while Harry thanked Sirius and declined further help.

Harry continued the twins’ rigged map-fragment game, losing forty-eight Galleons before he finally stopped. George and Fred then revealed that refusing to play had been the test for inheriting the Marauder’s Map.

• Harry returned to George and Fred with money Dobby had lent him and continued drawing slips from their box.
• After a slip said a rat had stolen his fragments, Harry paid a Galleon to inspect the box, but George and Fred reassured him and he kept playing.
• Harry grew suspicious when Fred held the box, but George and Fred explained the handover ceremony and persuaded him to continue.
• Harry spent forty-eight Galleons and ended one Purple Map Fragment short, then decided to accept his loss and leave.
• George and Fred told Harry he had passed the test by refusing to keep playing and revealed that refusing from the start would have made the Marauder’s Map his.

George and Fred gave Harry the Marauder’s Map and explained its secret passages and unusual blind spots. When Harry saw Peter Pettigrew’s name in his Dormitory, he hurried there to find out why a dead man appeared on the map.

• George and Fred gave Harry the wooden box and the Marauder’s Map, then explained that the map did not show Professor Holmes or the Defense Against Dark Magic office.
• Harry used the map to locate people around Hogwarts and discovered secret passages leading to Hogsmeade, including routes guarded by Dementors.
• Harry noticed an ink dot labeled Peter Pettigrew in his Dormitory, and George and Fred confirmed that the map showed locations in real time.
• Harry hurried toward his Dormitory, wondering whether Peter Pettigrew had returned to Hogwarts as a ghost.

Harry, Ron, and Hermione investigated why the Marauder's Map showed Peter Pettigrew beside Scabbers, while George and Fred suspected the rat was an Animagus. Their inquiries left them with more clues but no proof, and Lupin refused to teach the twins the counter-jinx until they had conclusive evidence.

• Harry, George, and Fred discovered that Scabbers's cage made Peter Pettigrew's dot overlap with the twins' dots on the Marauder's Map, then the twins took Scabbers out to examine him.
• George and Fred privately concluded that Scabbers might be Peter Pettigrew, but neither told Harry.
• Harry told Ron and Hermione about the map and cage; Hermione suspected Professor Holmes had altered the map to leave a clue, while Ron defended the professor and insisted Scabbers could not be Pettigrew.
• Hermione asked Harry to use the map to observe her movements, and Ron began investigating the names Wormtail, Prongs, and Moony with help from Percy, Bill, and Charlie.
• George and Fred asked Lupin to teach them the Animagus counter-jinx, but he refused because they lacked the necessary skill and Douglas had ordered that Scabbers not be changed back without conclusive evidence.

Douglas and Lupin’s new fitness test and detention practices unsettled Hogwarts students as monthly exams approached. Douglas tested Hufflepuff’s memorization, while Hermione and Harry kept Scabbers watched and Hagrid followed Douglas’s advice on judging dangerous beasts.

• Lupin announced that a paired obstacle-course chase would count as a monthly fitness test, and Douglas denied that he had pushed Lupin into it.
• Douglas called on Ernie Macmillan to recite the vampire material, then assigned him ten copies and Justin five after Ernie forgot part of it.
• Douglas gave students who had called him a bad influence extra attention in their lessons as exam week approached.
• Hermione and Harry secretly agreed to take turns watching Scabbers and kept Ron from letting him out of his cage.
• Hagrid began using Fang’s fear of dangerous beasts to guide which creatures the students studied, leaving Harry and the others unable to wheedle information from him.

Douglas tried to teach students to analyze exam questions, but his advice led some to invent guessing strategies, so he deliberately made the answer patterns misleading. After the exams, his response to a prank in the Counter-curse Passage turned into a major research assignment, and Flitwick invited Douglas to help with it.

• Douglas told fifth-year students to study past exam papers for patterns, prompting some to develop methods for analyzing and guessing answers.
• Douglas changed the multiple-choice answer patterns by House and year, and students spent the week doubting their answers after the Defense Against Dark Magic theory exam.
• Seventh-years altered a stage of the Counter-curse Passage with repeated spells and disguised counter-jinxes, and Douglas scolded them while assigning them to research disguising spells.
• Professor Flitwick invited Douglas to join his Charms Club and research the spell-disguise problem, leaving Douglas to take on the work himself.
• Hogwarts students welcomed their first Hogsmeade trip of the term, the Halloween Feast, and the return of Lupin's full moon.

On Halloween, Douglas met Harry in Hogsmeade and pressed him to solve the Sirius Black mystery, then joined Professor McGonagall, Minister Fudge, and others at The Three Broomsticks. Fudge revealed that the Ministry believed Black was somewhere around Hogwarts, while Douglas and McGonagall silently exchanged a look.

• Douglas received sweets from Honeydukes and told Harry to solve the Black case, but Harry admitted the investigators still did not understand the Marauder’s Map clue about Scabbers.
• Douglas left Harry, Hermione, and Ron with a Christmas deadline, then saw Fred, George, and Lee Jordan carrying prank products into an alley.
• Douglas joined Professor McGonagall, Professor Flitwick, Hagrid, and Minister Fudge at The Three Broomsticks and used a Copying Charm to share his Holmes wine with Madam Rosmerta.
• Douglas asked Fudge about the missing Dementors, and Rosmerta complained that their frequent patrols were giving her nightmares.
• Fudge said the Ministry had always believed Black was somewhere around Hogwarts, and McGonagall looked to Douglas, who discreetly shook his head.

At the Three Broomsticks, Fudge claimed Sirius Black was a werewolf who had come to Hogwarts to recruit werewolves and target Harry. Douglas and the professors concealed what they knew, while Flitwick quietly noticed their suspicious behavior.

• Fudge told Douglas and the others that the Ministry suspected Black was a werewolf and believed he had come to Hogwarts to build a werewolf army.
• Hagrid nearly revealed that he knew about Lupin, but McGonagall stopped him and Douglas urged him to drink instead of talking.
• Flitwick questioned Fudge's evidence, and Hagrid explained that the Forbidden Forest's wolf cubs were not werewolves.
• Douglas suggested that Lucius Malfoy's son had leaked classified information to Harry, leaving Fudge embarrassed.
• Hagrid, Fudge, and Rosmerta condemned Black, while Flitwick silently watched Douglas and McGonagall's strange reactions.

Harry, Ron, and Hermione tried to buy Hagrid a barrel of Butterbeer but were caught by their professors and left without it. Later, during Lupin’s transformation on Halloween, Douglas hosted another hot-pot meal, and Lupin found that the potion was working better than before.

• Harry and Ron arrived at the Three Broomsticks to buy a barrel of Butterbeer, and Hermione joined them before they noticed the professors and Minister Fudge.
• The trio claimed the Butterbeer was meant as a birthday present for Hagrid, who was moved by their explanation.
• Professor McGonagall let them go, but the three left without the Butterbeer and decided to find another way to learn information from Hagrid.
• On Halloween, Douglas stayed away from the feast while Hogwarts’s ghosts performed for the students in the Great Hall.
• Douglas prepared hot pot in the Defense Against Dark Magic office with dragon meat Charlie obtained at Sirius’s expense, and Lupin transformed nearby.
• Lupin said the potion was working better than it had during his previous transformation.

Hogwarts canceled its November exams and announced final exams and an ultimate challenge, intensifying competition and study. After Douglas punished George and Fred for disrupting class, Hermione gave Harry a book on identifying Animagi, renewing his suspicions about Scabbers.

• Hogwarts professors canceled the November Monthly Exams, announced final exams before Christmas, and offered top students ultimate challenge training.
• The Heads of House demanded that each subject and year group’s four training places include a student from their own house, and students studied harder.
• Snape taught students in third year and above a potion that could force werewolves to transform, and Sirius only relented after Douglas promised to develop a counteracting potion for Lupin.
• Douglas caught George and Fred hiccupping from Hiccough Sweets, assigned them copying, and imposed ten extra weekly papers on the fifth year after their classmates laughed.
• Hermione gave Harry a book opened to a section on identifying and counteracting Animagi, prompting Harry to wonder whether she had discovered a new clue about Scabbers.

Harry, Hermione, and the Weasley twins suspected Ron’s rat Scabbers was Peter Pettigrew, an Animagus who had faked his death. After Ron learned what they had been hiding, the group laid out their evidence and left him shaken but uncertain.

• At dinner, Hermione told Harry she suspected Scabbers was Peter Pettigrew and said George and Fred had been asking Professor Lupin about the Human Transfiguration Charm.
• Ron interrupted Harry and Hermione, while George and Fred drew him away with a business offer; Hermione teased Harry about imagining Hedwig as a transformed woman.
• After Harry returned from detention, Ron revealed that he had lent Scabbers and his cage to George and Fred in exchange for prank items and snacks.
• Hermione confronted George and Fred about Scabbers, Peter Pettigrew, and the Animagus theory, and the twins admitted they had discovered something but had not learned the Human Transfiguration Charm.
• Harry and Hermione explained their suspicions to Ron, pointing to Scabbers’s missing finger, his name on the map, and the professor’s pet food and magical cage; Ron recoiled at the thought that he had cuddled an old man for years.

Harry, Ron, and Hermione reconsidered their suspicions about Black and Scabbers, then found clues about Black, Lupin, and Peter in Harry’s old photo album. Hermione urged Harry to confront Lupin privately with the photograph, leaving him with a way to seek answers from someone who knew them all.

• Ron questioned why Peter would have stayed as a rat for years, while Hermione explained that her attempts to wake Scabbers had failed.
• Harry and Hermione discussed the Detective Club’s investigation into Black, and Harry mentioned the deadline his maternal cousin had set before Christmas.
• Hermione asked Harry for the photo album Hagrid had given him, and Harry found a photograph of Black at his parents’ wedding.
• Harry, Ron, and Hermione examined a photograph of Harry’s father, Black, Lupin, and a boy who resembled Peter Pettigrew.
• Hermione suspected Lupin might know more about Black and Peter, then told Harry to speak to him privately and take the photograph.

Douglas tried to motivate Hogwarts students with encouraging portrait speeches, but the ghosts and Peeves turned the campaign into a joke. He rewarded students bullied by Peeves with special cage balls, and George Weasley and Fred Weasley helped make the first successful capture.

• Portraits around Hogwarts began reciting motivational sayings, and students suspected Professor Holmes had arranged it.
• The ghosts, led by Peeves’ antics, supplied mocking punchlines to the portraits’ speeches, drawing students to linger in the corridors.
• Douglas gave students who performed well and had been bullied by Peeves reusable Peeves Cage Balls that could trap him for a day.
• After the first student failed to hit Peeves, students began renting out their cage balls and offering prizes for a successful throw.
• George Weasley and Fred Weasley worked together to trap Peeves for the first time, boosting demand for the cage balls.
• The ghosts resumed their campaign against Douglas after learning the cage balls only affected Peeves.

Harry questioned Lupin about a photograph and why James trusted Black as Secret Keeper, but Lupin blamed himself and Sirius for trusting Peter Pettigrew. After Lupin left, he went to Douglas’s office, where Sirius joined them and they discussed their guilt and memories of school.

• Lupin told Harry about Voldemort’s rise, the resistance, and the photograph taken after James, Lily, Sirius, and their friends graduated.
• Harry said Black had been the Secret Keeper, and Lupin insisted that James had not been wrong to trust his friends.
• Harry told Lupin that he suspected Peter Pettigrew was still alive, but Lupin ended the conversation and left.
• Lupin gave Douglas and Sirius the photograph and explained that Harry had brought it to him; he admitted he had persuaded James and Sirius to accept Peter as their friend.
• Sirius reassured Lupin that they had all trusted Peter, then admitted he had also been wrong to suspect Lupin.
• Lupin and Sirius recalled their school days while Douglas refilled their glasses and encouraged them to tell more.

Harry and his friends considered whether Peter Pettigrew had been the Potters’ real Secret Keeper and betrayed them, but they lacked enough information to decide. They planned to ask Hagrid, while Douglas listened to two people recount the events and remained silent.

• Harry told Ron, Hermione, and Ginny that Lupin had hinted the Potters might have changed their Secret Keeper.
• Hermione, Harry, and Ginny reasoned that Peter Pettigrew could have been the Secret Keeper, while Ron questioned why Peter would betray them.
• Hermione proposed that Peter might have been the traitor or that Black had learned the secret from Peter, but neither theory fully explained what happened.
• Ron suggested asking Snape about his former classmates, and Hermione concluded that they should go to Hagrid instead.
• Douglas listened as two people recounted the events and remained speechless.

Harry, Ron, and Hermione questioned Hagrid about Peter Pettigrew and learned that Peter had followed James and Sirius closely while seeming eager to please. Hermione suspected that being overlooked had helped push Peter toward betrayal, but Snape caught the three outside the Castle after dark and sent them to detention.

• Neville identified the questing beast in Hagrid's class, and Draco watched the creature cautiously from the back of the group.
• Harry, Ron, and Hermione asked Hagrid about Peter, who described him as James's timid, devoted follower and suggested they ask Lupin about the Marauders' friendship.
• Hagrid avoided telling the trio what he suspected about how Sirius became a werewolf and sent them back toward the Castle as evening approached.
• Hermione reasoned that Peter might have betrayed James after being overlooked, comparing him to Crabbe, while Harry and Ron discussed whether close friends would abandon one another.
• Snape caught Harry, Ron, and Hermione outside the Castle, took points from them for breaking school rules, and ordered them to wait for detention.