Harry Potter and the Half-Blood Prince

Overview

Plot Summary ⚠️ Spoilers

Characters

• Harry Potter
  The central protagonist, newly burdened by the prophecy and public belief that he is the “Chosen One.” He investigates Draco Malfoy, studies Voldemort’s past with Dumbledore, secures Slughorn’s Horcrux memory, and chooses to continue the fight by hunting Horcruxes.
• Albus Dumbledore
  Headmaster of Hogwarts and Harry’s mentor, who uses private lessons to teach Harry about Voldemort’s origins and Horcruxes. His trust in Snape, his search for Horcruxes, and his final mission with Harry shape the book’s central tragedy and Harry’s future task.
• Lord Voldemort
  The returned dark wizard whose war spreads into both the magical and Muggle worlds. Through memories, his transformation from Tom Riddle into Voldemort is traced through cruelty, theft, murder, and the creation of Horcruxes.
• Tom Riddle
  Voldemort’s younger self, seen in Dumbledore’s memories as a secretive, powerful, and cruel orphan who becomes obsessed with status, immortality, and magical trophies. His conversations with Slughorn and crimes against his family reveal the roots of the Horcrux plot.
• Severus Snape
  The new Defense Against the Dark Arts teacher, long distrusted by Harry but protected by Dumbledore’s confidence. He makes an Unbreakable Vow to protect Draco, is revealed as the Half-Blood Prince, and kills Dumbledore before fleeing Hogwarts.
• Draco Malfoy
  Harry’s school rival, secretly assigned a dangerous mission by Voldemort as punishment against his family. He repairs the Vanishing Cabinet, orchestrates indirect attacks through Rosmerta, and ultimately cannot bring himself to kill Dumbledore.
• Ron Weasley
  Harry’s best friend, Gryffindor Keeper, and a source of both loyalty and emotional conflict. His romance with Lavender strains the trio, and his poisoning by the mead exposes how close Voldemort’s plots have come to Harry’s circle.
• Hermione Granger
  Harry’s other closest friend, whose intelligence and caution counter Harry’s risk-taking. She distrusts the Half-Blood Prince’s book, helps analyze the Malfoy mystery, and pledges to join Harry in the Horcrux hunt.
• Ginny Weasley
  A skilled Gryffindor Quidditch player whose confidence and independence draw Harry’s romantic attention. She fights during the Hogwarts attack, briefly becomes Harry’s girlfriend, and accepts his decision to end the relationship for her safety.
• Horace Slughorn
  The returning Potions master who cultivates talented and well-connected students through the Slug Club. His shame over telling young Tom Riddle about Horcruxes makes his true memory crucial to Dumbledore’s plan.
• Rubeus Hagrid
  Hogwarts gamekeeper and Harry’s loyal friend, grieving Aragog and later Dumbledore. His burial for Aragog becomes the setting where Harry, aided by Felix Felicis, finally persuades Slughorn to surrender the Horcrux memory.
• Minerva McGonagall
  A senior Hogwarts professor who guides students academically, enforces discipline, and helps defend the school. After Dumbledore’s death, she assumes leadership and helps decide how Hogwarts will respond.
• Rufus Scrimgeour
  The new Minister of Magic, more forceful than Fudge but focused on appearances and public morale. He repeatedly tries to recruit Harry as a Ministry symbol, only to be rejected.
• Cornelius Fudge
  The former Minister of Magic, removed after public recognition of Voldemort’s return. He introduces Scrimgeour to the Muggle Prime Minister and helps explain the magical causes of national disasters.
• Narcissa Malfoy
  Draco’s mother, desperate to save her son from Voldemort’s dangerous assignment. Her plea to Snape results in the Unbreakable Vow that binds Snape to protect Draco and complete the task if Draco fails.
• Bellatrix Lestrange
  Narcissa’s sister and a fanatical supporter of Voldemort. She challenges Snape’s loyalty and serves as bonder for the Unbreakable Vow.
• Peter Pettigrew
  Snape’s reluctant servant at Spinner’s End, present when Narcissa and Bellatrix visit. His role is limited but marks Snape’s proximity to Voldemort’s inner circle.
• Remus Lupin
  A member of the Order of the Phoenix working undercover among werewolves. He explains Fenrir Greyback’s threat, defends Dumbledore’s trust in Snape, and struggles with Tonks’s love for him.
• Nymphadora Tonks
  An Auror and Order member who rescues Harry from the Hogwarts Express and later appears depressed and changed. Her distress is ultimately tied to her love for Lupin, which she declares after Dumbledore’s death.
• Molly Weasley
  The Weasley family matriarch, protective of Harry and anxious for her family during the war. Her tensions with Fleur ease after Fleur proves her devotion to Bill.
• Arthur Weasley
  Ron’s father and a Ministry official leading work against counterfeit defensive objects. He listens to Harry’s suspicions about Draco and remains a steady supporter during the crisis.
• Bill Weasley
  The eldest Weasley son, engaged to Fleur Delacour. He is badly mauled by Fenrir Greyback during the Hogwarts battle, but his relationship with Fleur survives the attack.
• Fleur Delacour
  Bill’s fiancée, initially disliked by Molly and Ginny for her manner. Her fierce loyalty after Bill’s mauling proves her commitment and reconciles her with Molly.
• Fred Weasley
  One of Ron’s older twin brothers and co-owner of Weasleys’ Wizard Wheezes. His joke shop thrives even in wartime, and its defensive products show how fear has reshaped magical commerce.
• George Weasley
  Fred’s twin and business partner at Weasleys’ Wizard Wheezes. He helps showcase the shop’s blend of comedy and practical defense during the Diagon Alley visit.
• Percy Weasley
  The estranged Weasley son who appears with Scrimgeour at Christmas. His visit serves mainly as a pretext for the Minister to approach Harry.
• Luna Lovegood
  Harry’s loyal and eccentric friend, invited by Harry to Slughorn’s party as a friend. She also helps during the defense of Hogwarts and attends Dumbledore’s funeral.
• Neville Longbottom
  Harry’s classmate and fellow D.A. member, invited to Slughorn’s lunch because of his family background. He helps defend Hogwarts during the Death Eater attack and is injured in the fighting.
• Katie Bell
  A Gryffindor Chaser who is cursed after carrying an opal necklace meant for another target. Her attack is one of Draco’s failed attempts to complete his mission through intermediaries.
• Lavender Brown
  Ron’s girlfriend for much of the year, whose public affection intensifies the rift between Ron and Hermione. Her relationship with Ron eventually collapses as his feelings shift.
• Cormac McLaggen
  A boastful Gryffindor student and rival Keeper candidate. After Ron is hospitalized, McLaggen plays disastrously and injures Harry during a Quidditch match.
• Romilda Vane
  A student who tries to attract Harry with love-potion-laced chocolates. Ron accidentally eats them, setting off the chain of events that leads to his poisoning.
• Kreacher
  The Black family house-elf whom Harry inherits from Sirius. Harry sends him to Hogwarts and later orders him, with Dobby, to follow Draco.
• Dobby
  The free house-elf loyal to Harry. He helps investigate Draco by reporting the repeated visits to the seventh floor and accepting Harry’s order to tail him.
• Mundungus Fletcher
  A disreputable Order associate caught selling stolen Black family heirlooms from Grimmauld Place. His theft enrages Harry and reinforces the disorder surrounding Sirius’s legacy.
• Madam Rosmerta
  The Three Broomsticks barmaid, revealed to have been under the Imperius Curse. Draco uses her to pass Katie the cursed necklace, send the poisoned mead, and communicate through enchanted coins.
• Fenrir Greyback
  A savage werewolf allied with the Death Eaters and feared for targeting children. He appears during the attack on Hogwarts and mauls Bill Weasley.
• Amycus Carrow
  A Death Eater who enters Hogwarts through the Vanishing Cabinet and pressures Draco on the Astronomy Tower. He fights during the retreat through the castle.
• Alecto Carrow
  A Death Eater who joins the tower confrontation and mocks Dumbledore. She later retreats with the other attackers during the battle.
• Marvolo Gaunt
  Voldemort’s grandfather, a violent and impoverished descendant of Slytherin. His ring and family history become essential clues in Dumbledore’s explanation of Voldemort’s Horcruxes.
• Morfin Gaunt
  Voldemort’s uncle, a Parselmouth who attacks Muggles and is later framed for the Riddle murders. His altered memory helps Dumbledore uncover Voldemort’s crime and theft of Marvolo’s ring.
• Merope Gaunt
  Voldemort’s mother, abused by her family and obsessed with Tom Riddle Sr. Her desperate choices, marriage, abandonment, and death form the beginning of Voldemort’s personal history.
• Tom Riddle Sr.
  Voldemort’s Muggle father, whom Merope enchants into marriage and who later abandons her. Voldemort eventually murders him and his parents, framing Morfin Gaunt.
• Hepzibah Smith
  A wealthy collector who shows Tom Riddle Hufflepuff’s cup and Slytherin’s locket. Her death allows Riddle to steal both objects, making her memory vital to identifying likely Horcruxes.
• Hokey
  Hepzibah Smith’s elderly house-elf, whose memory shows Riddle’s interest in the cup and locket. She is wrongly blamed after Hepzibah’s death through memory tampering.
• Sybill Trelawney
  The Divination professor whose prophecy shaped Harry and Voldemort’s conflict. She inadvertently reveals that Snape overheard part of the prophecy and passed it on.
• Moaning Myrtle
  The bathroom ghost who notices and comforts Draco during his moments of fear and distress. Her presence leads Harry to find Draco crying before their dangerous duel.
• Argus Filch
  Hogwarts caretaker, active in enforcing the school’s tightened wartime security. He catches Draco near Slughorn’s party and handles security checks around dangerous incidents.
• Madam Pomfrey
  The Hogwarts healer who treats Ron, Harry, and Bill after major injuries and attacks. Her medical assessments clarify the lasting consequences of poisonings, curses, and Greyback’s mauling.
• Kingsley Shacklebolt
  An Auror secretly assigned to guard the Muggle Prime Minister while posing as his secretary. His placement shows the Ministry’s effort to protect Muggle leadership during Voldemort’s war.
• The Muggle Prime Minister
  The nonmagical head of government who is briefed about Voldemort’s return and the magical causes of national disasters. His perspective frames the war as a threat beyond the wizarding world.
• R.A.B.
  The mysterious signer of the note hidden inside the fake locket. The note reveals that the real Horcrux was stolen before Harry and Dumbledore reached the cave.
• Fawkes
  Dumbledore’s phoenix, whose mournful song fills Hogwarts after Dumbledore’s death. His departure marks the end of Dumbledore’s presence at the school.

Themes