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"...that's Bode and Croaker... they're Unspeakables... from the Department of Mysteries, top secret, no idea what they get up to..."
Arthur Weasley[src]

The Department of Mysteries was a section of the Ministry of Magic that carried out confidential research. Most of its operations were carried out in total secrecy. Few wizards within the Ministry actually knew what was located within this department. Various mysteries of the world were studied there, including love, space, thought, time, death, and others. Wizards who worked in the Department of Mysteries were known as Unspeakables because of the confidential nature of their work.[2]

Some of the covert research projects this department undertook were revealed to members of Dumbledore's Army,[3] and an important battle of the Second Wizarding War took place within the department in June 1996.[4]

Due to the highly classified nature of this department, it was granted a great deal of independence, being the only one within the entire Ministry that did not need to answer to the Department of Magical Law Enforcement.[5] Even the Minister for Magic had very little authority over the department's operations, as the fifteenth Minister's attempt to shut down the branch was ignored by the Unspeakables.[6]


"They were standing in a large, circular room. Everything in here was black including the floor and ceiling — identical, unmarked, handle-less black doors were set at intervals all around the black walls, interspersed with branches of candles whose flames burned blue, their cool, shimmering light reflected in the shining marble floor so that it looked as though there was dark water underfoot."
— Description of the Department of Mysteries[src]

Inside of the the Department of Mysteries

The Department of Mysteries lay on the second-lowest level of the British Ministry of Magic, Level Nine. It was accessible via the lifts from the Ministry Atrium. This level bore a striking difference to those above: the black-tiled walls[7] were bare with no windows and no doors, apart from a plain black one at the end of the corridor that led into the Department proper.[8] Light was provided only by torches, which glowed with a blue-white light.[3] A small flight of steps to the left led to Level Ten.[8]

Behind the black door was the Entrance Chamber, which was designed to disorient any unauthorised personnel who entered it. It was a circular room with a dark marble floor that looked almost like standing water, candles emitting a cool blue light, and twelve handleless doors. Whenever a door closed, the walls rotated, making it impossible to determine which door was which. This chamber would respond to a verbal request for an exit by the opening of the correct door.[3]


Early history[]

"It was not realised for many years why time travellers over great distances never survived their journeys. All such experiments have been abandoned since 1899, when Eloise Mintumble became trapped, for a period of five days, in the year 1402."
— The Department of Mysteries stopping experimentation with time travel[src]

The Department of Mysteries was established sometime in or before the 17th century, actually predating the Ministry of Magic, which was only established in 1707. It was in activity since at least 1672, since there were records of intensive studies from this Department, dating as far back as that year, demonstrating that wizards and witches were born, not created.[1]

Minister Ottaline Gambol (term of office 18271835) was known to establish committees to investigate Muggle brainpower which seemed, due to the emergence of the British Empire, to be greater than some wizards had credited.[6] It is unknown if these investigations were conducted by the Department of Mysteries, but the Department did contain a room devoted to the study of thought.

In 18351841, Minister Radolphus Lestrange took a reactionary position, and attempted to close down the Department of Mysteries. He was ignored, however, by the Unspeakables and the rest of the Ministry.[6]

In the 1890s, the Department of Mysteries was known to have conducted time-travel experiments. These experiments were discontinued in 1899, when Unspeakable Eloise Mintumble travelled back in time to the year 1402 and there was a major breach of the laws of time, with catastrophic results. For one, Madam Mintumble was stuck in the 15th century for five days, and when she was finally retrieved to the present, her body had aged five centuries and she later succumbed in St Mungo's Hospital for Magical Maladies and Injuries. Also, there were at least twenty-five people (all of them descendants of people Mintumble had met in the past) who vanished into thin air, effectively becoming un-born. Finally, the Tuesday that followed the ordeal lasted two and a half full days, while the following Thursday lasted only four hours.[9]

Augustus Rookwood in Azkaban

Augustus Rookwood in Azkaban

During Lord Voldemort's first reign of power, he implanted Augustus Rookwood into the Department of Mysteries as a spy. When Voldemort first fell, Rookwood was turned in by turncoat Death Eater Igor Karkaroff, and was sentenced to life in Azkaban for exposing the Department's confidential experiments to the Dark Lord. Rockwood would then spend the next fifteen years in prison.

Second Wizarding War[]

Battle of the Department of Mysteries (1996)[]

"Voldemort knows you, Harry! He took Ginny down into the Chamber of Secrets to lure you there, it's the kind of thing he does, he knows you're the — the sort of person who'd go to Sirius's aid! What if he's just trying to get you into the Department of Myst —?"
— Voldemort lures Harry Potter into the Ministry[src]
Battle of the Department of Mysteries OOTPF

Battle in the Hall of Prophecy

In 1996, Lord Voldemort had his Death Eaters attempt to steal the above mentioned prophecy. After two failed attempts, Voldemort lured Harry Potter and five of his friends there by planting a vision of his godfather being tortured into his mind. Harry, Hermione Granger, Ron Weasley, Neville Longbottom, Ginny Weasley, and Luna Lovegood flew to the Ministry, where they were confronted by twelve Death Eaters.[4]

Battle in the Death Chamber GIF

The Order of the Phoenix arrives in the Death Chamber

The six members of Dumbledore's Army managed to distract their attackers and flee, scattering throughout the Department of Mysteries and combating the Dark wizards who pursued them. The Order of the Phoenix soon arrived, saving the teenagers but losing one of their own, Sirius Black, murdered by his own cousin Bellatrix Lestrange, who pushed him through the veil.[4]

This battle caused considerable damage to the Department of Mysteries, including the loss of many Time-Turners, and signalled the beginning of open war in the wizarding world.[4]

Luna Lovegood – probably influenced by an article in The Quibbler — once stated that Minister for Magic Cornelius Fudge "uses the Department of Mysteries to develop terrible poisons, which he secretly fed to anybody who disagreed with him".[10] There is no proof that this was ever true.

Under Voldemort's control (1997–1998)[]

"Recent research undertaken by the Department of Mysteries reveals that magic can only be passed from person to person when Wizards reproduce. Where no proven Wizarding ancestry exists, therefore, the so-called Muggle-born is likely to have obtained magical power by theft or force."
Daily Prophet article in August 1997[src]

Muggle-Born Registration Commission courtroom trial

On 1 August 1997, the Ministry of Magic fell under Voldemort's control, with Imperiused Pius Thicknesse the new puppet Minister for Magic. In line with the Death Eaters' ideology about blood purity, the Ministry began distributing anti-Muggle and Muggle-born propaganda, based on research allegedly conducted by the Department of Mysteries. Muggle-borns were forced to register with the Muggle-Born Registration Commission, which convicted them of having stolen magic from "real" wizards and witches, and sent them to Azkaban.[11]

Since this was not factually true, it is likely that this "research" either did not exist at all or was strongly skewed in order to support false conclusions. Unspeakables may have been intimidated into doing this, as many were shown to be terrified and under surveillance while the Ministry was under Death Eater control. Despite the clear ludicrousness and dishonesty of such "research", the public nevertheless followed suit, and Muggle-borns were rounded up.[11]

Presumably, after Voldemort's defeat in May of 1998 and the reform of the Ministry under Kingsley Shacklebolt, this information was exposed as untrue.


The Department apparently worked to uncover the secrets of death, time, space, thought, and love, among other things, and recorded prophecies whenever they were made. It included the following known chambers:

Brain Room[]

Main article: Brain Room
"Hey Harry, there are brains in here, ha ha ha, isn't that weird, Harry?"
Ron Weasley regarding the human brains in the Brain Room[src]

This long, rectangular room was lit by low-hanging lamps. It contained a tank of encephala, or brains, that swam in a green solution.[3] These particular brains were highly aggressive and would attack and constrict anything that tried to touch them or pick them up, as was the case with Ron Weasley.[4] The tendrils that the brains possessed were implied to be physical manifestations of thoughts.[3] The concept of thought and all related subjects were studied in this chamber.[3]

Hall of Prophecy[]

Main article: Hall of Prophecy
Breakdown hp5 1

Hall of Prophecy

Records of prophecies were stored in this long, cold chamber with high ceilings and towering shelves lit with blue-flame candles. These prophecies, held in glass orbs, were magically protected, so that the only people who could lift them off their stand were the Keeper of the Hall of Prophecies and the subject(s) of the individual prophecy.[3] Anyone else who attempted to inspect the orbs with their hands would be afflicted with instant madness.[12]

Alas, during the battle that took place within the Department of Mysteries in 1996, the six Dumbledore's Army members used Reductor Curses to smash the shelves of prophecies in order to distract the Death Eaters, and destroyed a great number of prophecies in the Hall as a result.[4]

Known Prophecies[]

"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 his 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..."
Sybill Trelawney's first prophecy[src]
Trelawney first prophecy

Sybill Trelawney's first prophecy

A year before Lily and James Potter were murdered by Lord Voldemort, the seer Sybill Trelawney made a prophecy involving Voldemort and a child who would come to be his destroyer.[12] After his return, Voldemort sought to know the entire prophecy and lured Harry and other members of Dumbledore's Army to the Hall in attempt to steal and confirm the contents of the orb. Due to the incompetency and failures of the Death Eaters, the orb was shattered in a commotion that prevented anyone from listening to the contents.[4] However, Harry was able to hear the prophecy from the Pensieve in Albus Dumbledore's office, since Trelawney made the original to Dumbledore himself.[12]

During the Battle of the Department of Mysteries, Lucius Malfoy and Bellatrix Lestrange destroyed, accidentally, two prophecies while talking to Harry Potter.[4] The first one was made by a male seer and it was about something "new" that would come at the Solstice. The second one was made by a female seer and it was about "none will come after" something unknown.

Death Chamber[]

Main article: Death Chamber
Veil - Death Chamber

The Death Chamber

This large, square room somewhat resembled Courtroom Ten of the Wizengamot. It was dimly lit, with stone tiers leading down to a pit in the centre. In this pit was a dais, upon which stood a very old stone archway with a tattered black curtain hanging from it. This arch incorporated the Veil, which separated the worlds of the living and the dead. Some people, such as Harry Potter and Luna Lovegood, heard voices through the Veil.[3]

Sirius Black fell through the archway during the Battle of the Department of Mysteries after being struck by a spell from his own cousin Bellatrix Lestrange, and subsequently died.[4] His body was never recovered, as it had vanished inside the veil.

Love Room[]

Main article: Love Room

This room was behind a door that remained locked at all times and which could not be unlocked by Alohomora or magical unlocking penknives.[3] According to Dumbledore, behind the door was the most mysterious subject of study of the department, and the most powerful force ever to exist in the universe — which was known as "Love".[12]

There was also said to be a large fountain of Amortentia (the most powerful love potion in existence) in the room.[13]

Space Chamber[]

Main article: Space Chamber

This was a dark room full of planets floating in mid-air. Presumably, it was from this Chamber where wizards studied the aspect of space, as it was one of the limits of magic (along with time). Visitors could find themselves floating as well. Luna Lovegood deemed it "a very odd place" and used the Reductor Curse on the Pluto replica to block an attacking Death Eater during the Battle of the Department of Mysteries.[4]

Time Room[]

Main article: Time Room

A Time-Turner

This long, rectangular room was filled with a beautiful, dancing light that sparkled like gems. All kinds of time-related devices completely filled the chamber, such as clocks of every description, and Time-Turners. It also contained a large crystal bell jar at its far end, from which the sparking light came. Inside the jar, anything would grow increasingly younger, to its pre-life state, be reborn to grow older, and cycle through endlessly.[3]

At the end of the room there was a door that led into the Hall of Prophecies. There were also small offices just off the main chamber, in which Harry Potter, Hermione Granger and Neville Longbottom faced two Death Eaters during the Battle of the Department of Mysteries. During this battle, the department's entire stock of Time-Turners was smashed.[4]

It can be assumed that study in the time room led to the discovery and creation of the ability to magically manipulate time through Time-Turners.

Known employees[]


The Harry Potter Wiki has 137 images related to Department of Mysteries.

Notes and references[]

  1. 1.0 1.1 The Tales of Beedle the Bard - Albus Dumbledore on "Babbitty Rabbitty and her Cackling Stump"
  2. 2.0 2.1 Harry Potter and the Goblet of Fire, Chapter 7 (Bagman and Crouch)
  3. 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 Harry Potter and the Order of the Phoenix, Chapter 34 (The Department of Mysteries)
  4. 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 Harry Potter and the Order of the Phoenix, Chapter 35 (Beyond the Veil)
  5. Fantastic Beasts and Where to Find Them
  6. 6.0 6.1 6.2 Writing by J. K. Rowling: "Ministers for Magic" at Wizarding World
  7. Harry Potter and the Order of the Phoenix (film), Chapter 26 (The Department of Mysteries)
  8. 8.0 8.1 Harry Potter and the Order of the Phoenix, Chapter 7 (The Ministry of Magic)
  9. 9.0 9.1 9.2 Writing by J. K. Rowling: "Time-Turner" at Wizarding World
  10. Harry Potter and the Order of the Phoenix, Chapter 10 (Luna Lovegood)
  11. 11.0 11.1 Harry Potter and the Deathly Hallows, Chapter 11 (The Bribe)
  12. 12.0 12.1 12.2 12.3 12.4 Harry Potter and the Order of the Phoenix, Chapter 37 (The Lost Prophecy)
  13. PotterCast 131 J.K. Rowling Interview Transcript, 2 January 2008 from LeakyCauldron.com
  14. Wonderbook: Book of Spells
  15. Hogwarts Legacy
  16. Harry Potter: Hogwarts Mystery, Year 7, Chapter 47 (The Circle and the Crown)
  17. Harry Potter: Hogwarts Mystery, Year 7, Chapter 43 (Father Knows Best)
  18. 18.0 18.1 18.2 18.3 Harry Potter: Wizards Unite
  19. Harry Potter and the Goblet of Fire, Chapter 30 (The Pensieve)
  20. Harry Potter and the Goblet of Fire (film)
British Ministry of Magic Departments
Department of International Magical Cooperation Ministry of Magic Latin Logo Department of Magical Education logo Department of Magical Law Enforcement logo MinistryOfMagicLogo - Cursed Child DMAC clear MBRC clear Department for the Regulation and Control of Magical Creatures logo DMT clear
Level 1 Level 2
Minister for Magic and Support Staff Department of Magical Law Enforcement
Office of the Minister for Magic · Office of the Advisor to the Minister for Magic · Office of the Senior Undersecretary to the Minister for Magic · Office of the Junior Assistant to the Minister for Magic Auror Office · Department of Intoxicating Substances · Improper Use of Magic Office · Misuse of Muggle Artefacts Office · Office for the Detection and Confiscation of Counterfeit Defensive Spells and Protective Objects · Wizengamot Administration Services
Level 3 Level 4
Department of Magical Accidents and Catastrophes Department for the Regulation and Control of Magical Creatures
Accidental Magic Reversal Squad · Invisibility Task Force · Muggle Liaison Office · Muggle-Worthy Excuse Committee · Obliviator Headquarters Beast Division · Being Division · Centaur Liaison Office · Goblin Liaison Office · Office for House-Elf Relocation · Office of Misinformation · Pest Advisory Board · Spirit Division
Level 5 Level 6
Department of International Magical Co-operation Department of Magical Transportation
International Confederation of Wizards, British Seats · International Magical Office of Law · International Magical Trading Standards Body Apparition Test Centre · Broom Regulatory Control · Floo Network Authority · Portkey Office
Level 7 Level 8
Department of Magical Games and Sports The Atrium
British and Irish Quidditch League Headquarters · Official Gobstones Club · Ludicrous Patents Office Lobby and Reception Area · Fountain of Magical Brethren · Magic is Might monument · Ministry Munchies · Security Desk · Lifts · Magical Maintenance Office
Level 9 Level 10
Department of Mysteries Wizengamot Courtrooms
Hall of Prophecy · Death Chamber · Brain Room · Time Chamber · Space Chamber · Love Chamber Courtroom Ten