Harry Potter and the Half-Blood Prince

Overview

Plot Summary ⚠️ Spoilers

Characters

• Harry Potter
  The protagonist, entering his sixth year while the war against Voldemort intensifies. He studies Voldemort’s past with Dumbledore, investigates Draco Malfoy, relies on the Half-Blood Prince’s textbook, and ultimately commits to hunting Horcruxes.
• Albus Dumbledore
  Hogwarts headmaster and Harry’s mentor, who uses private lessons to teach Harry about Voldemort’s origins and Horcruxes. He trusts Snape despite Harry’s doubts and leads the dangerous cave mission to recover a suspected Horcrux.
• Tom Riddle / Lord Voldemort
  The central enemy whose open return drives the war. Through memories, he is revealed as a controlling, cruel orphan who becomes obsessed with heritage, trophies, immortality, and splitting his soul through Horcruxes.
• Severus Snape
  Former Potions master turned Defense Against the Dark Arts teacher, distrusted by Harry but trusted by Dumbledore. He swears an Unbreakable Vow to protect Draco, is revealed as the Half-Blood Prince, and kills Dumbledore on the Astronomy Tower.
• Draco Malfoy
  A Slytherin student given a secret mission by Voldemort as punishment for his family. He repairs the Vanishing Cabinet, uses Madam Rosmerta under Imperius for attacks, and hesitates when ordered to kill Dumbledore.
• Ron Weasley
  Harry’s best friend, Gryffindor Keeper, and one of the few people Harry fully trusts with the prophecy and Horcrux mission. His confidence, romance with Lavender, poisoning, and reconciliation with Hermione shape much of the school-year conflict.
• Hermione Granger
  Harry’s close friend and intellectual anchor, skeptical of the Half-Blood Prince’s book and alert to danger. She helps track clues, supports Harry after Dumbledore’s death, and pledges to join the Horcrux hunt.
• Ginny Weasley
  Gryffindor Chaser and Ron’s sister, whose confidence and skill draw Harry’s romantic interest. She fights during the castle attack and accepts Harry’s decision to end their relationship for her safety.
• Horace Slughorn
  The returning Potions master who cultivates talented and well-connected students through the Slug Club. His suppressed memory about Tom Riddle and Horcruxes becomes essential to Dumbledore’s understanding of Voldemort.
• Rubeus Hagrid
  Hogwarts gamekeeper and Harry’s loyal friend, grieving Aragog and later Dumbledore. His hut and creatures become part of key events, including the burial that helps Harry obtain Slughorn’s memory.
• Minerva McGonagall
  Hogwarts professor and Head of Gryffindor who manages student schedules, discipline, and the aftermath of Dumbledore’s death. She assumes leadership during the crisis and helps plan Dumbledore’s funeral.
• Rufus Scrimgeour
  The new Minister for Magic, introduced as tougher and more forceful than Fudge. He repeatedly tries to use Harry as a public symbol of Ministry unity, but Harry refuses to be manipulated.
• Cornelius Fudge
  The former Minister for Magic who briefs the Muggle Prime Minister on the magical causes of recent disasters. His dismissal marks the Ministry’s shift into wartime leadership under Scrimgeour.
• Narcissa Malfoy
  Draco’s mother, terrified that Voldemort has given her son a fatal mission. She secretly goes to Snape and secures his Unbreakable Vow to protect Draco.
• Bellatrix Lestrange
  A devoted Death Eater who distrusts Snape and challenges his loyalty. She acts as Bonder for the Unbreakable Vow between Snape and Narcissa.
• Peter Pettigrew
  A subordinate at Snape’s Spinner’s End house, where he serves drinks and eavesdrops. His presence reinforces Snape’s apparent position within Voldemort’s circle.
• Molly Weasley
  Ron and Ginny’s mother, who shelters Harry at the Burrow and worries intensely over the family’s safety. Her hostility toward Fleur softens after Fleur proves her devotion to Bill.
• Arthur Weasley
  Ron and Ginny’s father, promoted to combat dangerous fake protective items during the war. He listens to Harry’s suspicions about Draco and later thanks Harry for saving Ron.
• Fred Weasley
  Co-owner of Weasleys’ Wizard Wheezes, whose joke shop flourishes despite the war and sells defensive items. He remains close to the family and visits Ron after the poisoning.
• George Weasley
  Co-owner of Weasleys’ Wizard Wheezes, helping showcase practical joke and defense products in Diagon Alley. He supports the family through Ron’s hospitalization and the growing danger.
• Bill Weasley
  The eldest Weasley son, engaged to Fleur Delacour. He is mauled by Fenrir Greyback during the attack on Hogwarts but survives, proving a turning point in Molly’s acceptance of Fleur.
• Fleur Delacour
  Bill’s fiancée, initially resented by several Weasleys for her manner and presence at the Burrow. Her unwavering commitment to Bill after his injuries wins Molly’s respect.
• Percy Weasley
  The estranged Weasley son who appears at Christmas with Scrimgeour and later attends Dumbledore’s funeral with the Ministry delegation. His stiffness highlights the family’s unresolved tensions.
• Remus Lupin
  An Order member working undercover among werewolves, burdened by his identity and the danger around him. He defends Dumbledore’s trust in Snape and resists Tonks’s love until others challenge his fears.
• Nymphadora Tonks
  An Auror stationed near Hogwarts, visibly distressed for much of the story. She rescues Harry from the train and later reveals her love for Lupin.
• Fenrir Greyback
  A violent werewolf allied with Voldemort and used as a threat by Draco. He joins the Death Eaters entering Hogwarts and mauls Bill Weasley during the attack.
• Luna Lovegood
  Harry’s eccentric friend, who attends Slughorn’s party with him as a friend and later provides whimsical Quidditch commentary. She responds to Harry’s call for help and stands vigil after the attack.
• Neville Longbottom
  Harry’s fellow Gryffindor, invited to Slughorn’s lunch because of his famous parents. He helps guard the Room of Requirement and is injured fighting during the Death Eater attack.
• Kreacher
  The Black family house-elf inherited by Harry and sent to work at Hogwarts. Harry later orders him, with Dobby, to tail Draco without warning or assisting him.
• Dobby
  The loyal house-elf eager to help Harry. He reports on Draco’s movements and helps maintain surveillance on the Room of Requirement.
• Katie Bell
  A Gryffindor Chaser who is cursed by an opal necklace after being Imperiused into carrying it. Her attack is one of Draco’s failed attempts to harm Dumbledore.
• Lavender Brown
  A Gryffindor student who begins a public romance with Ron. The relationship hurts Hermione and adds tension before Ron and Lavender drift apart.
• Cormac McLaggen
  A cocky Gryffindor student who competes with Ron for Keeper and later substitutes disastrously. His arrogance costs Gryffindor a match when he injures Harry with a Bludger.
• Dean Thomas
  A Gryffindor student chosen to replace Katie Bell as Chaser and Ginny’s boyfriend for part of the year. His breakup with Ginny clears the way for Harry and Ginny’s relationship.
• Romilda Vane
  A student attracted to Harry’s fame who attempts to dose him with love-potioned chocolates. Her scheme backfires when Ron eats them on his birthday.
• Crabbe
  One of Draco Malfoy’s associates, used as a lookout while Draco works in the Room of Requirement. He takes Polyjuice Potion to disguise himself as other students.
• Goyle
  One of Draco Malfoy’s associates and another Polyjuiced lookout for the Room of Requirement. His disguised presence helps Harry deduce Draco’s method.
• Madam Rosmerta
  The Three Broomsticks landlady, placed under the Imperius Curse by Draco. She passes on the cursed necklace and poisoned mead used in attempts connected to Dumbledore.
• Sybill Trelawney
  The Divination professor who made the original prophecy about Harry and Voldemort. She later reveals that Snape overheard part of that prophecy at the Hog’s Head.
• Filius Flitwick
  Hogwarts Charms professor, involved in school life and injured during the attack after being Stupefied by Snape. He participates in the aftermath discussions about Hogwarts.
• Pomona Sprout
  Hogwarts Herbology professor who teaches the sixth years and later joins staff discussions after Dumbledore’s death. She supports honoring Dumbledore at Hogwarts.
• Poppy Pomfrey
  Hogwarts matron who treats Ron’s poisoning, Harry’s Quidditch injury, and Bill’s cursed wounds. Her care anchors several aftermath scenes.
• Argus Filch
  Hogwarts caretaker who enforces security measures with Secrecy Sensors and catches Draco prowling near Slughorn’s party. His vigilance reflects the school’s wartime atmosphere.
• Mundungus Fletcher
  A disreputable associate who steals and sells Black family possessions from Grimmauld Place. Harry confronts him in Hogsmeade, prompting Dumbledore to stop the thefts.
• Marvolo Gaunt
  Voldemort’s grandfather, a violent descendant of Slytherin obsessed with pure blood and family heirlooms. His ring and Slytherin’s locket become central to Dumbledore’s Horcrux investigation.
• Morfin Gaunt
  Voldemort’s uncle, an unstable Parselmouth who attacks Muggles and Ministry officials. Tom Riddle frames him for the Riddle murders after stealing his wand and Marvolo’s ring.
• Merope Gaunt
  Voldemort’s mother, abused by her family and infatuated with Tom Riddle Sr. Dumbledore concludes she likely used a love potion, was abandoned, and died after giving birth.
• Tom Riddle Sr.
  Voldemort’s Muggle father, first seen near the Gaunt cottage. He abandons Merope after the enchantment ends and is later murdered by his son.
• Bob Ogden
  A Ministry official whose memory reveals the Gaunt family’s squalor, violence, and connection to Slytherin. His visit gives Harry the first direct view of Voldemort’s maternal family.
• Caractacus Burke
  A Borgin and Burkes associate whose memory shows that he bought Slytherin’s locket from a destitute Merope for very little. This helps trace an object later suspected to be a Horcrux.
• Mrs. Cole
  The orphanage matron who tells Dumbledore about Tom Riddle’s birth, Merope’s death, and troubling incidents involving the young Riddle. Her account establishes Riddle’s early cruelty and isolation.
• Hepzibah Smith
  A wealthy collector who shows Tom Riddle Hufflepuff’s cup and Slytherin’s locket. Riddle murders her and steals both objects, making her memory vital to identifying likely Horcruxes.
• Hokey
  Hepzibah Smith’s elderly house-elf, wrongly convicted after Riddle alters her memory. Her recollection reveals how Riddle gained access to the cup and locket.
• Eileen Prince
  Severus Snape’s mother, identified by Hermione as the source of the Prince name. This discovery confirms that Snape was the Half-Blood Prince.
• Moaning Myrtle
  A ghost who comforts Draco while he breaks down over his mission. Her bathroom becomes the site of Harry and Draco’s duel and the Sectumsempra incident.
• Fawkes
  Dumbledore’s phoenix, present in his office and heard singing a lament after Dumbledore’s death. His departure from Hogwarts underscores the finality of the loss.
• Buckbeak
  The hippogriff inherited by Harry from Sirius and kept with Hagrid under the name Witherwings. He attacks Snape during the escape across the grounds, forcing Snape to retreat.
• Aragog
  Hagrid’s giant acromantula, whose death devastates Hagrid. His burial gives Harry the lucky opportunity to draw the true Horcrux memory from Slughorn.
• Fang
  Hagrid’s dog, trapped when Death Eaters set Hagrid’s hut on fire. Hagrid rescues him during the chaos after Dumbledore’s death.
• Amycus Carrow
  A Death Eater who enters Hogwarts through the repaired Vanishing Cabinet. He pressures Draco on the tower and later fights in the castle.
• Alecto Carrow
  A Death Eater who accompanies the intruders into Hogwarts. She taunts Dumbledore on the tower and escapes during the fighting.
• Thorfinn Rowle
  An enormous blond Death Eater involved in the attack on Hogwarts. He causes destruction during the escape and sets Hagrid’s hut ablaze.
• The Muggle Prime Minister
  The non-magical head of government who is briefed on the wizarding war’s effects on national disasters. His scene establishes that Voldemort’s return now threatens both magical and Muggle worlds.
• Kingsley Shacklebolt
  An Auror assigned secretly to protect the Muggle Prime Minister. His placement shows the Ministry’s wartime security efforts.
• Vernon Dursley
  Harry’s uncle, hostile and powerless when Dumbledore arrives at Privet Drive. He represents the household protection Harry must return to once more before adulthood.
• Petunia Dursley
  Harry’s aunt, present when Dumbledore explains the protective magic tied to Privet Drive. Her silence during Dumbledore’s rebuke underscores the Dursleys’ neglect.
• Dudley Dursley
  Harry’s cousin, a frightened witness to Dumbledore’s visit. He plays little active role but remains part of the home that protects Harry until he turns seventeen.
• Madame Maxime
  A visiting figure who arrives for Dumbledore’s funeral by Beauxbatons carriage. Her presence contributes to the broad gathering of mourners.
• Grawp
  Hagrid’s giant half-brother, now living in the mountainside and later attending Dumbledore’s funeral. His quiet presence offers Hagrid clumsy comfort.
• R.A.B.
  The initials on the note hidden inside the fake locket from the cave. The writer claims to have stolen the real Horcrux, leaving Harry with a new mystery and a failed mission.

Themes