Harry Potter and the Order of the Phoenix

Harry Potter and the Order of the Phoenix is the fifth book in J. K. Rowling's Harry Potter book series. It was one of the most widely-anticipated books of the series, since there was a wait of three years between it and the previous book, Goblet of Fire. It is also the largest book in the series, having jokingly been labelled as heavier than a refrigerator (by Stephen Fry at the Royal Albert Hall event) and used as a benchmark for the size of the next two books.

Dedication
To Neil, Jessica and David, who make my world magical

Book description
Harry is in his fifth year at Hogwarts School as the adventures continue. There is a door at the end of a silent corridor. And it's haunting Harry Potter's dreams. Why else would he be waking in the middle of the night, screaming in terror? Harry has a lot on his mind for this, his fifth year at Hogwarts: a defense against the dark arts teacher with a personality like poisoned honey; a big surprise on the Gryffindor Quidditch team; and the looming terror of the ordinary wizarding level exams. But all these things pale next to the growing threat of he-who-must-not-be-named-a threat that neither the magical government nor the authorities at Hogwarts can stop. As the grasp of darkness tightens, Harry must discover the true depth and strength of his friends, the importance of boundless loyalty, and the shocking price of unbearable sacrifice. His fate depends on them all. The book that took the world by storm. In his fifth year at Hogwart's, Harry faces challenges at every turn, from the dark threat of he-who-must-not-be-named and the unreliability of the government of the magical world to the rise of Ron Weasley as the keeper of the Gryffindor Quidditch Team. Along the way he learns about the strength of his friends, the fierceness of his enemies, and the meaning of sacrifice.

Book chapters

 * 1) Dudley Demented
 * 2) A Peck of Owls
 * 3) The Advance Guard
 * 4) Number Twelve Grimmauld Place
 * 5) The Order of the Phoenix
 * 6) The Noble and Most Ancient House of Black
 * 7) The Ministry of Magic
 * 8) The Hearing
 * 9) The Woes of Mrs. Weasley
 * 10) Luna Lovegood
 * 11) The Sorting Hat's New Song
 * 12) Professor Umbridge
 * 13) Detention With Dolores
 * 14) Percy and Padfoot
 * 15) The Hogwarts High Inquisitor
 * 16) In The Hog's Head
 * 17) Educational Decree Number Twenty-Four
 * 18) Dumbledore's Army
 * 19) The Lion and the Serpent
 * 20) Hagrid's Tale
 * 21) The Eye of the Snake
 * 22) St Mungo's Hospital for Magical Maladies and Injuries
 * 23) Christmas on the Closed Ward
 * 24) Occlumency
 * 25) The Beetle at Bay
 * 26) Seen and Unforeseen
 * 27) The Centaur and the Sneak
 * 28) Snape's Worst Memory
 * 29) Career Advice
 * 30) Grawp
 * 31) O.W.L.s
 * 32) Out of the Fire
 * 33) Fight and Flight
 * 34) The Department of Mysteries
 * 35) Beyond the Veil
 * 36) The Only One He Ever Feared
 * 37) The Lost Prophecy
 * 38) The Second War Begins

Chapter 1: Dudley Demented
The bores of the summer are particularly annoying to Harry Potter at the beginning of this book. He remains at Privet Drive, wholly cut off from the wizarding world, and constantly hoping to hear any news about the return to power of Lord Voldemort. After running into his cousin, Dudley Dursley, on a walk, Harry and Dudley are attacked by Dementors. Harry drives them off with the Patronus, and is surprised to find Mrs. Figg, his old, cat-loving neighbour, storming up the road toward the two teenagers.

However, she does not yell at the two boys, but instead reveals that she is a Squib who has been watching over Harry since the beginning of the summer; she was furious about Mundungus Fletcher (who was to be watching Harry and disapparated from the front of 4 Privet Drive).

Chapter 2: A Peck of Owls
Harry, Mrs. Figg, and a very ill Dudley walk back to Privet Drive.

The Ministry of Magic sends Harry a letter telling him that he's been expelled from Hogwarts for underage magic. Dumbledore is quick to act, telling the Ministry that they do not have the authority to expel Hogwarts students; so the Ministry sets up a hearing to decide whether or not to break Harry's wand. Harry is informed of this through a number of letters delivered to the Dursleys' house after he performed the Patronus charm.

As Muggles are unable to see Dementors, Dudley assumes that Harry attacked him with some sort of spell. Vernon is ready to throw Harry out, as he has always yearned to do so since receiving Harry, when Petunia receives a Howler.

Before she has an opportunity to open the letter, it bursts into flames, and a menacing voice says, "Remember my last, Petunia". Petunia then immediately convinces her husband to let Harry remain at Privet Drive. Harry has no idea of what's going on.

Chapter 3: The Advance Guard
"A surprising amount of people volunteered to come and get you."

- Remus Lupin After many more days of being locked in his room, a number of witches and wizards (auto denominated the "Advance Guard") come to rescue Harry from the Dursleys' home. They are members of the Order of the Phoenix, an elite group whose members fight Lord Voldemort and the Death Eaters.

Chapter 4: Number Twelve Grimmauld Place
They bring Harry to their headquarters, the house of the Black family, or 12 Grimmauld Place (London). The Weasleys, Hermione Granger , and Harry’s godfather Sirius Black are there.

Chapter 5: The Order of the Phoenix
"The Order is comprised only of overage wizards. Wizards who have left school, he added, as Fred and George opened their mouths. There are dangers involved of which you can have no idea, any of you…"

- Remus Lupin Sirius Black tries to tell Harry about the last events and about their plans but Molly keep remembering that Harry is too yong and that Dumbledore told them not to tell Harry "more than he needs to know". Harry learns that Voldemort is building an army and is attempting to retrieve a "weapon...something he didn't have last time".

Chapter 6: The Noble and Most Ancient House of Black
Harry meets Kreacher, the domestic-elf of the House of Black. He is always cursing and muttering bad wods, in an ocasion he calls Hermione a mudblood. Sirius explains that his family were all for the purification of the wizarding race, getting rid of Muggle-borns and having pure-bloods in charge. He also talk to Harry about his younger brother Regulus Black, who had been a Death Eater.



Chapter 7: The Ministry of Magic
Arthur Weasley escorts Harry to the Ministry for his disciplinary hearing. Harry was very nervous, he feared the possibility of being expelled from Hogwarts.



Chapter 8: The Hearing
Mr Weasley also takes Harry to the latter's disciplinary hearing. He is cleared of all charges after testimony from Dumbledore, and from the Squib down the street, Mrs. Figg, who confirms that the Dementors attacked Harry and Dudley.



Chapter 9: The Woes of Mrs Weasley
Back to Grimmauld Place, everybody celebrated the acquittal of Harry. Later, the children receive their Hogwarts' Letters an Ron and Hermione are named prefects.

Mrs. Weasley prepared a dinner party to the new prefects, and after the party she went upstairs to get rid of a Boggart. But the sight of her worst fears (all her family members and Harry dead) was too much, she started to cry and wonder about the future of her loved ones.



Chapter 10: Luna Lovegood
After Harry, Ron and Hermione have taken the train to Hogsmeade station and are just about to board the carriages that escort most of the students to Hogwarts (excepting the first-years, who cross the lake in boats), Harry notices that the carriges are being pulled by some sort of winged horses. He points them out to Ron and Hermione, but they cannot see them, and act worried when he insists that they are right there. Another girl who travelled in their train compartment, Luna Lovegood, says that she can see them, and in fact could see them ever since she first came to Hogwarts. Harry is mystified, sinse he couldn't see them when he first came, but he can see them now.



Chapter 11: The Sorting Hat's New Song
When Harry, Ron and Hermione arrive at the school, they are surprised to hear that Dolores Umbridge, Senior Undersecretary to the Minister (and who was at Harry's hearing) is the new Defence Against the Dark Arts teacher.



Chapter 12: Professor Umbridge
During their first Defence Against the Dark Arts lesson they discover that Umbridge refuses to teach real defence methods and that they will not be performing any spells, only learning Ministry-approved theory (learning in a "risk-free way").



Chapter 13: Detention with Dolores
Due to Harry's telling the truth about Lord Voldemort's return in Professor Umbridge's first DADA lesson, she gives him detention every night for a week, in which she makes him write out "I must not tell lies" many times in his own blood.



Chapter 14: Percy and Padfoot
Harry write a letter to Sirius telling him about his detention. Later, Ron receives a letter from Percy, his brother congratulates him on becoming a prefect and urging him to stop associating with Harry, whom he felt was a bad influence, as well as believing that his family would one day realise their mistake for believing Dumbledore and apologise to him. Ron found the letter extremely offensive. He tore it up and threw it into the fire. After reading the letter Harry thought he had never felt more like his godfather Sirius Black who the wizarding world at large still considered a mass murderer.



Chapter 15: The Hogwarts High Inquisitor
It becomes clear Umbridge is really there to spy on and take control of the school and is soon appointed High Inquisitor, arbitrarily imposing rules and regulations (known as "Educational Decrees"). She also harbours racial hatred for "half-breeds", such as centaurs, werewolves and similar creatures.



Chapter 16: In The Hog's Head
Hermione convinces Harry to secretly teach students Defence Against the Dark Arts. Though at first reluctant, Harry finally accepts. They name their clandestine group "Dumbledore's Army", or D.A. for short, to mock the Ministry of Magic, which fears Dumbledore is creating a secret wizard army.



Chapter 17: Educational Decree Number Twenty-Four
After hearing about the defensive magic organisation, Dolores Umbridge used her power as Hogwarts High Inquisitor to pass this Educational Decree, which forbade the regular meeting of three or more students without the High Inquisitor's consent. Any student found to be in noncompliance of the Decree was to be expelled immediately.

Chapter 18: Dumbledore's Army
Despite the prohibition, Harry assured all the members that the meetings would go ahead once an ideal location was found. They would just need to be careful. Soon, Harry was told about the Room of Requirement by the house-elf Dobby. For the safety of the group, Hermione bewitched several coins with a Protean Charm, one for each member of the D.A. When activated by Harry, the numbers on each coin would change to inform the bearer of the time and date of the next meeting. In the D.A. meetings, Harry started them off slowly, practicing the Disarming Charm. The class progressed at a fair rate, practicing the Impediment Jinx, the Reductor Curse , and the Stunning Spell.



Chapter 19: The Lion and the Serpent
Gryffindor Quidditch team began their season with a victory against Slytherin, despite of the fact that Ron  was very nervous and didn't play well, it made the Slytherins mock him singing a song. Shortly after the match, Draco Malfoy insulted and provoked Fred and George Weasley and Harry Potter. Harry and George promptly attacked him, but all three had their broomsticks confiscated and were banned from Quidditch for life by Dolores Umbridge, then-High Inquisitor of Hogwarts. They were replaced by Andrew Kirke, Jack Sloper , and Ginny Weasley , respectively.



Chapter 20: Hagrid's Tale
About halfway through the school year, Hagrid returned from his mission for Dumbledore badly injured. Harry, Ron and Hermione visit him and Hagrid tell them about his unlucky negotiations with the giants. Hagrid resumed his teaching post, beginning with a lesson about Thestrals.



Chapter 21: The Eye of the Snake
Harry has disturbing dreams about running down a hallway and attempting to open a door in the Ministry of Magic's Department of Mysteries, but being unable to. Then one night he dreams that he is a snake attacking Ron's father. He awakens in a panic and tells others, who indeed find Mr. Weasley at the Ministry, suffering from severe venomous snake bites.



Chapter 22: St Mungo's Hospital for Magical Maladies and Injuries
Critically injured, Arthur was taken to St Mungo's. He survived the attack, but was required to take a Blood-Replenishing Potion at regular intervals. He shared the ward with a man who had been bitten by a werewolf and a woman with a massive chunk out of her leg who refused to tell the Healers what had bitten her arousing suspicions she had been handling something illegal.



Chapter 23: Christmas on the Closed Ward
Hermione, Ron and Ginny Weasley discover that Neville Longbottom 's parents are insane and living at St Mungo's Hospital for Magical Maladies and Injuries. They also see their former DADA professor Gilderoy Lockhart.



Chapter 24: Occlumency
Harry fears he is being possessed by Voldemort. In response, Dumbledore has Snape teach Harry Occlumency to block his mind from intrusion, but their mutual animosity ends their lessons prematurely.



Chapter 25: The Beetle at Bay
Due to high number of students who are sceptical to Voldemort's return, Hermione blackmails journalist (and unregistered Animagus) Rita Skeeter into writing a favourable article about Harry witnessing Voldemort's return. Ravenclaw student Luna Lovegood, a close friend of Ginny Weasley, argues with her father to publish the story in his paper, The Quibbler. Furious, Umbridge bans the tabloid from the school and strips Harry of his Hogsmeade visitation rights, but the story spreads rapidly, gathering support for Harry. Many in the wizarding community also now begin to believe Harry.



Chapter 26: Seen and Unforeseen
Umbridge considers Rubeus Hagrid (a half-giant ) and Sybill Trelawney incompetent, and sacks Trelawney (Hagrid is dismissed later). Although Dumbledore is unable to prevent Trelawney's dismissal, he invokes his authority to allow her to remain in the castle and appoints a new Divination teacher - a centaur, Firenze.



Chapter 27: The Centaur and the Sneak
When Umbridge uncovers the group's meetings, which was due to Cho Chang's friend Marietta Edgecombe, Dumbledore claims that he organised it. Confronted by two Aurors John Dawlish and Kingsley Shacklebolt (who was not loyal to the Ministry, but to Dumbledore), Minister Fudge, and Umbridge, Dumbledore easily disables them and is spectacularly whisked away by his phoenix, Fawkes.



Chapter 28: Snape's Worst Memory
Umbridge is appointed Headmistress and imposes even tighter control. Fed up, the Weasley twins instigate a revolt, causing mayhem throughout the school while the staff pointedly do nothing to help Umbridge regain control. This marks the end of Fred and George's magical education, who now opt to move into their magical tricks and joke shop in Diagon Alley, Weasleys' Wizard Wheezes.

During one of the Occlumency lessons Harry uncovered the source behind Snape's  hatred for his father, when he went into Snape's Pensieve  and saw into his memories of being bullied by James  and the breaking up of Snape and his mother's friendship.

Chapter 30: Grawp
As Ron Weasley is playing in Gryffindor's championship Quidditch match, Harry and Hermione are whisked away by Hagrid to introduce his half-brother Grawp. Reasoning that it is only a matter of time before he is driven out of Hogwarts by Umbridge now that Dumbledore is gone, Hagrid wants them to take care of Grawp in his stead once this happens.

Chapter 32: Out of the Fire
{C Harry receives a vision that Sirius is being tortured at the Department of Mysteries, although Hermione suspects it may be a trap. Harry desperately attempts to contact Sirius at Grimmauld Place via the Floo Network in Umbridge's office fireplace, but he is caught.

Chapter 33: Fight and Flight
Umbridge reveals it was she who sent the Dementors to attack Harry during the summer. As she is about to use the Cruciatus Curse on him, Hermione claims that Dumbledore has hidden a powerful weapon in the Forbidden Forest. She leads Harry and Umbridge into the forest where they encounter centaurs. Umbridge foolishly insults them and an angry centaur picks up Umbridge and carries her off screaming into the woods. When Hagrid's giant half-brother, Grawp crashes onto the scene, Hermione and Harry escape amid the chaos.

Harry, Ron and Hermione, along with Luna, Ginny and Neville fly to the Ministry of Magic on the school's Thestrals, unaware they are being lured into a trap.

Chapter 34: The Department of Mysteries
When they arrive at the Department of Mysteries, they are ambushed by Death Eaters. Voldemort seeks a prophecy contained in a glass sphere there and needs Harry to retrieve it for him. All of the six students heroically fight the many Death Eaters, but they are dangerously outmatched.

Chapter 35: Beyond the Veil
They are nearly defeated, but Order members suddenly arrive to help them. During the ensuing battle, the glass sphere is shattered and the prophecy lost. Sirius is blasted with a spell by his Death Eater cousin, Bellatrix Lestrange, and falling backwards, disappears through a mysterious veiled archway. Remus Lupin restrains Harry, who wants to follow and rescue Sirius, telling him that Sirius is dead.

Chapter 36: The Only One He Ever Feared
Dumbledore arrives and the Death Eaters, except for Bellatrix Lestrange, are captured. Lord Voldemort appears and duels with Dumbledore. Sensing that he cannot win against the old hero, he attempts to posess Harry in the hope that Dumbledore will kill Harry, seeking to drive Voldemort out. However, Harry is too full of grief for the death of Sirius, or love, and Voldemort cannot reside in Harry's soul without suffering unendurable pain. Ministry of Magic employees arrive in time to see the Dark Lord before he Disapparates, taking Lestrange with him. Cornelius Fudge finally admits Voldemort has returned and Harry's interview with Rita Skeeter is reprinted in the Daily Prophet.

Chapter 37: The Lost Prophecy
Later, Dumbledore apologises to Harry for withholding information over the past year. He reveals the lost prophecy, for it was to him that it was first told:

"The one with the power to vanquish the Dark Lord approaches ... born to those who have thrice defied him, born as the seventh month dies ... and the Dark Lord will mark him as equal, but he will have power the Dark Lord knows not ... and either must die at the hand of the other for neither can live while the other survives ... the one with the power to vanquish the Dark Lord will be born as the seventh month dies ..."

Dumbledore also reveals that, due to when the boy was predicted to be born, Neville Longbottom could also have been the child in the prophecy. Dumbledore believes Voldemort chose to attack Harry because he is a half-blood like himself; Neville is a pureblood. In so doing, the Dark Lord marked Harry as his equal; therefore, there is no doubt that the prophecy relates to anyone but Harry.

Chapter 38: The Second War Begins
It becomes clear she is really there to spy on and take control of the school and is soon appointed High Inquisitor, arbitrarily imposing rules and regulations (known as "Educational Decrees"). She also harbours racial hatred for "half-breeds", such as centaurs, werewolves and similar creatures. She considers Rubeus Hagrid (a half-giant) and Sybill Trelawney incompetent, and sacks Trelawney (Hagrid is dismissed later). Although Dumbledore is unable to prevent Trelawney's dismissal, he invokes his authority to allow her to remain in the castle and appoints a new Divination teacher - a centaur, Firenze.

Harry has disturbing dreams about running down a hallway and attempting to open a door in the Ministry of Magic's Department of Mysteries, but being unable to. Then one night he dreams that he is a snake attacking Ron's father. He awakens in a panic and tells others, who indeed find Mr. Weasley at the Ministry, suffering from severe venomous snake bites. Harry fears he is being possessed by Voldemort. In response, Dumbledore has Snape teach Harry Occlumency to block his mind from intrusion, but their mutual animosity ends their lessons prematurely.

Due to high number of students who are sceptical to Voldemort's return, Hermione blackmails journalist (and unregistered Animagus) Rita Skeeter into writing a favourable article about Harry witnessing Voldemort's return. Ravenclaw student Luna Lovegood, a close friend of Ginny Weasley, argues with her father to publish the story in his paper, The Quibbler. Furious, Umbridge bans the tabloid from the school, but the story spreads rapidly, gathering support for Harry. Many in the wizarding community also now believe Harry.

Hermione convinces Harry to secretly teach students Defence Against the Dark Arts. Though at first reluctant, Harry finally accepts. They name their clandestine group "Dumbledore's Army", or D.A. for short, to mock the Ministry of Magic, which fears Dumbledore is creating a secret wizard army. When Umbridge uncovers the group's meetings, which was due to Cho Chang's friend Marietta Edgecombe, Dumbledore claims that he organised it. Confronted by two Aurors John Dawlish and Kingsley Shacklebolt (who was not loyal to the Ministry, but to Dumbledore), Minister Fudge, and Umbridge, Dumbledore easily disables them and is spectacularly whisked away by his phoenix, Fawkes. Umbridge is appointed Headmistress and imposes even tighter control. Fed up, the Weasley twins instigate a revolt, causing mayhem throughout the school while the staff pointedly do nothing to help Umbridge regain control. This marks the end of Fred and George's magical education, who now opt to move into their magical tricks and joke shop in Diagon Alley, Weasleys' Wizard Wheezes.

Harry receives a vision that Sirius is being tortured at the Department of Mysteries, although Hermione suspects it may be a trap. Harry desperately attempts to contact Sirius at Grimmauld Place via the Floo Network in Umbridge's office fireplace, but he is caught. Umbridge reveals it was she who sent the Dementors to attack Harry during the summer. As she is about to use the Cruciatus Curse on him, Hermione claims that Dumbledore has hidden a powerful weapon in the Forbidden Forest. She leads Harry and Umbridge into the forest where they encounter centaurs. Umbridge foolishly insults them and an angry centaur picks up Umbridge and carries her off screaming into the woods. When Hagrid's giant half-brother, Grawp crashes onto the scene, Hermione and Harry escape amid the chaos.

Harry, Ron and Hermione, along with Luna, Ginny and Neville fly to the Ministry of Magic on the school's Thestrals, unaware they are being lured into a trap. When they arrive at the Department of Mysteries, they are ambushed by Death Eaters. Voldemort seeks a prophecy contained in a glass sphere there and needs Harry to retrieve it for him.

All of the six students heroically fight the many Death Eaters, but they are dangerously outmatched. They are nearly defeated, but Order members suddenly arrive to help them. During the ensuing battle, the glass sphere is shattered and the prophecy lost. Sirius is blasted with a spell by his Death Eater cousin, Bellatrix Lestrange, and falling backwards, disappears through a mysterious veiled archway. Remus Lupin restrains Harry, who wants to follow and rescue Sirius, telling him that Sirius is dead. Dumbledore arrives and the Death Eaters, except for Bellatrix Lestrange, are captured. Lord Voldemort appears and duels with Dumbledore. Sensing that he cannot win against the old hero, he attempts to posess Harry in the hope that Dumbledore will kill Harry, seeking to drive Voldemort out. However, Harry is too full of grief for the death of Sirius, or love, and Voldemort cannot reside in Harry's soul without suffering unendurable pain. Ministry of Magic employees arrive in time to see the Dark Lord before he Disapparates, taking Lestrange with him. Cornelius Fudge finally admits Voldemort has returned and Harry's interview with Rita Skeeter is reprinted in the Daily Prophet.

Later, Dumbledore apologises to Harry for withholding information over the past year. He reveals the lost prophecy, for it was to him that it was first told:

"The one with the power to vanquish the Dark Lord approaches ... born to those who have thrice defied him, born as the seventh month dies ... and the Dark Lord will mark him as equal, but he will have power the Dark Lord knows not ... and either must die at the hand of the other for neither can live while the other survives ... the one with the power to vanquish the Dark Lord will be born as the seventh month dies ..."

Dumbledore also reveals that, due to when the boy was predicted to be born, Neville Longbottom could also have been the child in the prophecy. Dumbledore believes Voldemort chose to attack Harry because he is a half-blood like himself; Neville is a pureblood. In so doing, the Dark Lord marked Harry as his equal; therefore, there is no doubt that the prophecy relates to anyone but Harry.

Film
Harry Potter and the Order of the Phoenix was released on Wednesday July 11, 2007. It was 2 hours and 18 minutes long and marked as one of the shortest Harry Potter film released, even though it is the longest book in the series.

Behind the scenes/errors

 * Before its release, rumoured book titles were "The Green-Flame Torch" and the "The Mountain of Fantasy".
 * During the Attack at Magnolia Crescent, Harry uses the Lumos spell, but there is no mention of him using that during his hearing. However, they could have been counting that along with him conjuring a Patronus in front of Dudley.
 * In Harry Potter and the Prisoner of Azkaban, Lupin mentions that no one knows what a boggart looks like when it is alone; in this book, Moody is able to recognize it, with help from his magical eye. It should be noted that Lupin's comment was made before the Moody character was introduced. However, Moody may have seen his worst fear, and knew it was a boggart because his fear was probably too big for a desk.
 * In the chapter 6, a nest of dead puffskeins is discovered in 12, Grimmauld Place under a sofa. But, according to some information, it's impossible because the puffskeins are too big for going under a sofa, and making nests.
 * The phone number to get into the Ministry of Magic is 62442 which can be used to spell "magic" on a mobile phone.
 * During the meeting in the Hog's Head, Dennis Creevey shows up for the meeting. However, in Harry's fifth year, Dennis would only be a second year, and therefore would not be able to visit Hogsmeade. It is possible that Dennis sneaked illegally out of the school using one of Fred and George's secret passages, although this is unlikely.
 * When the group of students arrive at the Hog's Head for the first Dumbledore's Army meeting, Fred and George Weasley arrive last, but then Fred jumps to the front of the group to reach the barman first.
 * Harry and Cho have a date on Valentine's Day to Hogsmeade, where the students are allowed to go on certain weekends. February 14th, 1996 was a Wednesday, however. There should not have been a Hogsmeade visit on Valentine's Day.
 * Several spells and charms are cast when Harry is taken from the Dursley's however no Ministry warnings were sent. In The Half-Blood Prince, Albus Dumbledore explains to Harry that the Ministry puts the Trace on all young Witches and Wizards and monitors for the use of magic but cannot specifically identify the origin of the magic. Although it is probable, given Harry was already up on a charge of Misuse of Magic at the time, that the Order informed the Ministry they would be collecting Harry and that they might use magic around him.
 * When Cho is talking about Quidditch to Harry, she says something like "Remember the first time we played together, in the third year?" However, Cho is one year older than Harry, and therefore could not have been in the same year. Wood also mentions to Harry (during his third year) that Cho is "a fourth-year and... pretty good."
 * When Umbridge is inspecting Snape and Harry's potion is ruined, Snape gives him a zero and an essay to write on what he did wrong. Harry then says that he had Quidditch practice, however just that morning Educational Decree Number Twenty-Four had been enforced and the Gryffindor Quidditch team had not been approved yet, although he hadn't realised that Quidditch teams were included in the Decree too.
 * When Umbridge first puts Harry in detention she says at five o'clock, in her office. On the following day, when Harry goes to detention, the book says that he went to dinner before then, which means that dinner at Hogwarts starts at least at half past four, which is unlikely. However, dinner isn't always referred to as the 'last meal of the day.'