Chapter Summaries

Joe Yin accompanied Napp and Taylor around Hogsmeade, where Taylor discussed trying to reconstruct the Wolfsbane Potion for homework. At the Three Broomsticks, Luke abandoned his plan to confront Joe Yin after sensing danger, and the group prepared to continue their visit.

• Joe Yin, Taylor, and Napp visited the Three Broomsticks, where Napp tried Butterbeer and asked about buying Mummy Bubble Gum.
• Taylor told Napp and Joe Yin that she planned to reconstruct the Wolfsbane Potion using two Potions assigned by her professor.
• Luke grew angry at Joe Yin but sensed danger when Joe Yin looked his way, then decided against attacking him.
• Luke dragged his companion out of the bar and warned him not to return while the students and professors were in Hogsmeade.
• Napp suggested visiting the Shrieking Shack, and Taylor and Joe Yin agreed to continue their outing.

Sirius used the Hogsmeade outing to sneak into Hogwarts as a black dog and hunt for Peter Pettigrew, driven by revenge for James. He reached Gryffindor but found himself exposed to increasing danger, while James secretly followed him and prepared to guide his escape.

• Sirius abandoned the Shrieking Shack route after discovering its secret passage had been blocked and chose another way into Hogwarts.
• Sirius slipped past Cho Chang and her friend at the Quidditch Pitch, while James followed the black dog after leaving Cho’s arms.
• Sirius avoided several students and entered Gryffindor Castle, unaware that James was tracking him from above.
• Sirius reached the dormitory floor but found the hall open and unobstructed, and realized that students could discover him at any moment.
• James waited near Hogsmeade to carry out his master’s plan to help Sirius escape, while Sirius continued searching for Peter Pettigrew.

Sirius, disguised as a Big Black Dog, slipped into Hogwarts, where George’s plan to drive him away went wrong and put students at risk. Ginny helped subdue him, and the chapter ended with the Twins taking the dog out of the common room.

• Students explored the Shrieking Shack while Fred mocked its decayed furnishings.
• Sirius entered the common room through a hidden passage, startling the students and racing toward the stairs.
• Luke and Draco tried to carry out George’s plan to drive away the Big Black Dog, but Ginny struck it with a bat and used Protego to shield herself.
• The Big Black Dog broke free and fled down the corridor, while the students escaped the Shrieking Shack in fright.
• Ginny questioned whether the task was complete, and Luke and Draco admitted that her help had prevented a disaster.
• The Twins led the Big Black Dog out of the common room.

Draco discovered that Harry was a Werewolf and confronted Sirius and Lupin in the Shrieking Shack, where Sirius tried to use Harry’s transformation to kill him. Lupin rescued Draco, and James arrived outside as the old secrets and resentments resurfaced.

• Draco fled the Shrieking Shack with Goyle and Crabbe, then returned to the Three Broomsticks and began telling students about the frightening encounter.
• James led two girls toward the Shrieking Shack while Professor Luke stayed behind to watch the students.
• Draco told Sirius that he would keep Harry’s identity secret, but Sirius locked the Shack and urged the transformed Harry to kill him.
• Harry lunged at Draco, and Draco used Lumos to blind him and escape his attack.
• Lupin stopped Sirius, dragged Draco outside, and locked and reinforced the Shack before James arrived.

Taylor, Hermione, and Luke explored the Shrieking Shack and uncovered its hidden magical structure and a secret passage. They encountered Sirius, who insisted Peter Pettigrew was alive and framed him; Taylor believed him but had no proof, leaving them with a possible route back to Hogwarts and a new lead.

• Sirius, hiding in the Shrieking Shack, decided he needed help to expose Peter Pettigrew and avenge James and Lily.
• Taylor, Hermione, and Luke entered the shack through a secret passage and examined its hidden rooms and layered magical symbols.
• Taylor identified the shack’s magical arrays as characteristic of Dumbledore’s work and explained how separate symbols could influence one another.
• Sirius emerged from the passage and confronted Taylor, fearing she meant to hurt Harry.
• Sirius told Taylor that Peter Pettigrew was alive and named on the Marauder’s Map as the murderer; Taylor said she believed him but lacked evidence.

Harry used Sirius’s guilt over Hermione to turn him away from seeking revenge alone and toward becoming a father figure in Harry’s life. After Sirius agreed to trust Harry with the matter, Harry revealed that Peter Pettigrew was already in his hands.

• Sirius offered Harry the Black Family vault in exchange for help finding Peter, but Harry refused money and challenged Sirius for choosing revenge over facing Hermione.
• Harry told Sirius that Hermione needed him and that he should take responsibility as Harry’s godfather; Sirius struggled with guilt and agreed to leave Peter to Harry.
• Harry assured Sirius that Hermione would believe him and deserved to know who had killed his parents, while Sirius asked whether Hermione would blame him.
• Harry told Sirius that Peter Pettigrew was already in his hands, then left the Shrieking Shack with Luke and the girls.
• On the way back to Hogsmeade Village, Taylor asked Harry how far he had gone, and Luke questioned whether Peter might have been near Hermione.

Luke and the girls reasoned that Sirius had been wrongly convicted, while Ron maneuvered to make the isolated man depend on him. Book connected Trelawney’s black-dog omen to Sirius and warned Ron that the investigation might be mistaken, as Hermione discovered Scabbers was missing.

• Luke praised Hermione and Taylor for deducing that Sirius had taken the blame for another person’s crimes.
• Book recalled seeing a large black dog and told Hermione that Sirius Black might be innocent, but Hermione reassured him that Hogwarts was safe.
• Ron told Harry that Sirius need not trust them, only realize he could rely on no one else, and treated Sirius’s potential support as a bargaining asset.
• Book connected the black dog from Divination to the one he had seen before and decided to tell Ron that Dumbledore’s investigation might be wrong.
• Ron watched Scabbers tremble inside a specially made cage, while Hermione cried out that her rat was missing.

Book confronted Peter Pettigrew, exposing his betrayal of the Potter family and using the threat to Peter’s mother to break his composure. Book revealed that he had contacted Sirius and left Peter trapped in a specially made cage, making Peter’s escape a condition for Luke’s freedom to go out later in the year.

• Peter woke in a specially made cage after Book had kept him locked up overnight.
• Book warned Peter not to return to human form inside the cage and shocked him when he resisted.
• Book condemned Peter for betraying the Potter family and told him that his actions had shaped Harry’s unhappy childhood.
• Book threatened Peter’s mother, drawing a shrill squeak from the rat.
• Book revealed that he had contacted Sirius and told Luke to guard Peter, whose escape would determine whether Luke could go out freely later in the year.

Harry learned that Slyther’s father planned to use Slyther’s marriage as a family bargain, and promised to help him resist it. As preparations to help Sirius were completed, Harry began a separate effort to spread news and influence public opinion.

• At breakfast, Malfoy told Luke that preparations for helping Sirius were complete and that they could act at any time.
• Harry told Slyther that he had met Sirius Black and that someone else had been responsible for killing his parents.
• Slyther told Harry that his father was arranging his marriage as a transaction with the Skye Family, and Harry promised to help him.
• Cuipuka told Slyther that family interests outweighed personal happiness and compared him unfavorably with Harry Gaunt.
• Harry and Slyther discussed how rumors about Harry and the Skye Family could spread, while Slyther agreed to give his father an explanation.

Ron reassured Harry about Scabbers while investigating Peter Pettigrew, who had escaped but left a trace. He arranged for McGonagall to meet Sirius at the Shrieking Shack, where Sirius learned Pettigrew had not been caught.

• Harry asked Luke whether Sirius's story was believable, and Luke said he was inclined to believe Sirius but needed Peter Pettigrew caught to settle the truth.
• Harry lamented that Scabbers was missing, and Ron said the rat was likely fine and that McGonagall's situation had to take priority.
• McGonagall agreed to visit the Shrieking Shack with Ron, while Harry promised Ron his support.
• Ron met Sirius at the Shrieking Shack and handed him the Marauder's Map.
• Ron told Sirius that Pettigrew had escaped but left a trace, and Sirius thanked him after hearing McGonagall was willing to meet.

James and Sirius discussed how Sirius could help with the Beauxbatons exchange while remaining under suspicion until Peter Pettigrew was found. James arranged for Remus to accompany McGonagall, and Sirius agreed to the plan despite his doubts about Hogwarts.

• Luke clarified that he was helping Sirius mainly for Harry's sake, and Sirius showed sincere gratitude.
• James told Sirius that Hogwarts and McGonagall still distrusted him because Peter Pettigrew had not been caught and Sirius had once admitted to being a Death Eater.
• James explained that Hogwarts and Beauxbatons were arranging a year-long student exchange, and he needed someone trusted to accompany McGonagall.
• Sirius guessed that James meant Remus, and James confirmed that Remus could be trusted and that Wolfsbane Potion made his condition manageable.
• James said he would contact Harry about the arrangements, and Sirius accepted the plan while warning that he would not tolerate being handed over for the bounty.

James arranged for Lupin to meet Sirius at the Shrieking Shack, choosing Luke to accompany him while staying away so their conversation would not be influenced by his presence. Luke also revealed that the Marauder’s Map had once shown Peter Pettigrew at Hogwarts, leaving open whether Pettigrew had concealed himself or left the grounds.

• Luke told Lupin that Sirius wanted to meet Harry and urged Lupin to stay near him.
• James arranged for Lupin and Luke to meet Sirius that evening at the Shrieking Shack, giving Luke the knock pattern and explaining that he did not want to interfere.
• Luke questioned James about the Marauder’s Map and said he had previously seen Peter Pettigrew’s name on it.
• Luke searched the map but could not find Pettigrew, and concluded that Pettigrew had either blocked the map or left Hogwarts’s range.
• James told Snape that he would let Lupin and Sirius speak without him, while Snape warned that James’s plan for the Delacour family could bring complications.

Sirius met with Luke and Harry in the Shrieking Shack, trying to warn them that James Gaunt had dangerous ambitions and might be connected to The Dark Lord. Luke remained loyal to James, while Harry withheld judgment; Sirius left the conversation recognizing that James had anticipated his warning.

• Harry recognized Sirius’s genuine guilt and excitement but remembered James’s warning that Sirius had not yet proven his innocence.
• Sirius told Luke and Harry about his discovery, escape, and conversation with Luke, then argued that James Gaunt’s talk of kindness concealed enormous ambitions and possible ties to The Dark Lord.
• Luke rejected Sirius’s attempt to turn him against James, saying he would help James rather than oppose him if James had ambitions.
• Sirius realized that James had predicted he would speak against him and warned Luke that staying there could put him in a dangerous position.
• Harry left the woods after seeing Lily and Lupin together, while James reviewed the welcoming ceremony and Peter watched from his cage.

Taylor prepared to welcome the Beauxbatons exchange group while he and Hermione worried that Hoggwart Lescrissie might use hidden methods against him. Hermione experienced a vision of someone ambushing Taylor from behind, leaving him wary of the coming exchange.

• Luke and Taylor prepared the Great Hall for the Beauxbatons visitors as Hermione and Luke discussed the threat posed by Hoggwart Lescrissie.
• Hermione warned Luke to watch Lescrissie and Fleur, while Taylor finished coordinating the welcoming ceremony with students and professors.
• Taylor told Luke and Hermione that he had only Madame Maxime’s account of the visiting teacher and could not fully trust the information.
• Hermione saw a vision of an unidentified figure ambushing Taylor from behind and warned him that the exchange group might bring trouble.
• Taylor agreed to be careful, and Luke helped the weary Hermione return to the dormitories.

Beauxbatons arrived at Jenkins for an exchange, where Thestral greeted Professor Moore and Fleur amid the students’ fascination with the visitors. The group entered Jenkins and joined the welcome gathering in the Great Hall, while Fleur remained uncertain about Thestral’s decision to place her at his side.

• Beauxbatons arrived by carriage drawn by Enchanted Horses, and the students marveled at the animals and the visitors.
• Thestral introduced himself to Professor Moore as a Jenkins assistant and School Board Member, and the two exchanged formal greetings.
• Fleur told Thestral she had never wanted to attend and questioned why he had made her stand beside him, but he said the arrangement offered protection.
• Hogwarts Les Dumbledore and the other visitors introduced themselves as the students reacted to their appearance.
• Thestral led the group through Jenkins’ gates, and the students entered the Great Hall beneath Jenkins and Beauxbatons banners.

Chrissie Lestrange and Fleur Delacour introduced themselves as exchange students, and both made clear their interest in Luke. Luke arranged for them to try Hogwarts's Sorting Hat, while Fleur began using her apparent closeness to him to limit the attention and choices surrounding her.

• Chrissie introduced herself and said she had come to Hogwarts primarily to pursue Luke, leaving the students reassessing his status.
• Fleur introduced herself and explained that Luke's initiative had prompted her to come as an exchange student and give him an opportunity to pursue her.
• Luke invited Chrissie and Fleur to try Hogwarts's Sorting Hat, and Chrissie took the stool first.
• Chrissie told Luke that he was the most suitable marriage candidate her grandfather had found, though she would keep pursuing him whether or not he liked her.
• Fleur recognized the private exchange between Luke and Chrissie, then stood beside Luke to make their association appear closer to the students.

At Hogwarts' banquet, Chrissie was Sorted into Slytherin, while the Sorting Hat placed Fleur in Lacus after sensing her desire to become stronger. Luke reflected on the Sorting and the growing uncertainty around who might be plotting against him, as the Beauxbatons professor introduced herself as the exchange Herbology teacher.

• Chrissie chose Slytherin and told Luke that she had followed her own heart, even though her choice matched what he wanted.
• The Sorting Hat praised Fleur's courage, wisdom, leadership, and loyalty, then Sorted her into Lacus because she yearned to become stronger.
• Fleur asked Luke whether he had any requirements for her, and Luke told her to follow her heart.
• Gryffindor introduced herself as Beauxbatons' exchange professor and said she would teach Herbology at Hogwarts.
• Luke wondered who among the three watching him would eventually move against him as he sensed a carefully woven net closing around him.

Luke turned the crowded Herbology class with Jenkins into an open lecture and coordinated students and professors to move it to a larger classroom. As the students organized, Cho Chang told Fleur about Hogwarts’s recent history, while Dumbledore gave Luke authority to arrange the lesson and remained in his office.

• Luke proposed turning Jenkins's overcrowded Herbology class into an open lecture in a larger classroom, and Jenkins agreed.
• Luke asked Cedric to gather the prefects and organize the students, then went to invite professors to attend.
• Fleur asked Cho Chang whether Hogwarts often held drills, and Cho explained that the students’ orderly movements came from past incidents at the school.
• Luke told Dumbledore about the open lecture, and Dumbledore authorized him to arrange it as the headmaster’s assistant.
• Luke urged Dumbledore to leave his office and support the school if needed, but Dumbledore dismissed him, and Luke went back to organize the classroom.

Jenkins demonstrated the unusual properties of the Soul-Guiding Flower in a crowded public Herbology class, revealing its connection to Ghosts. The lesson ended with Ghosts gathering around the flower, which seemed to bridge the living and the dead.

• Luke and Professor McGonagall prepared the classroom, and Jenkins began his public class after Luke encouraged him to relax.
• Jenkins used Life Force to grow a Soul-Guiding Flower from a seed, impressing the students and knowledgeable Wizards.
• Jenkins placed the flower in a sealed jar, where it turned blood-red and appeared to die as the air was removed.
• Jenkins opened the jar, releasing a fragrance that Pansy recognized as suitable for perfume, but he explained that the flower's ancient name had a reason behind it.
• Several Ghosts entered the classroom and gathered around the jar to inhale the flower's fragrance as Jenkins described the wonders and potential of Magical Plants.

Peter Pettigrew escaped from Book Gaunt’s magically reinforced cage by using his Animagus transformation to force the door open while Luke was away. After Peter fled, Doris followed him, leaving his escape uncertain.

• In Herbology class, Lockhart explained that concentrated Soul-Guiding Flowers attracted Wrathful Spirits, surprising students who had never heard of the subject.
• Peter Pettigrew waited until Book Gaunt attended Herbology and Luke left to find food, then began transforming his body inside the cage to force its door open.
• Peter carefully changed back into a rat, slipped out of Book’s room, and fled from the dormitory.
• Doris watched Peter escape, climbed down from her hiding place, and followed the direction he had gone.