The Hogwarts Diary

The Hogwarts Diary
Object information
Location	Hogwarts Library
Made	Before the 1980s and 1990s
Owners	Hogwarts School of Witchcraft and Wizardry Hogwarts Library Jacob's sibling

"That is for the Hogwarts Diary to reveal to you. Each keeper sees only what they are meant to see."

— Librarian Irma Pince to Jacob's sibling after they managed to open the book

The Hogwarts Diary was a benevolent magical book which chose certain students, called 'keepers', to look after it. It would only open for a keeper, and the contents of the Diary were unique to each keeper. The Diary was able to communicate with its keepers telepathically, something that would only be possible though Legilimency.

History

"The Hogwarts Diary is a powerful window into the secrets of the castle."

— The words written on the pages of The Hogwarts Diary when Jacob's sibling opened it

During the 1980s or 1990s, Jacob's sibling was chosen to be the keeper of The Hogwarts Diary following a long period of inactivity. The Diary presented Jacob's sibling with a series of mysteries to solve to help the inhabitants of Hogwarts. The first mystery was to find The Spore Scrolls, a compilation of former Headmistress Professor Dame Phyllida Spore's extensive studies on magical fungi. The second mystery was to figure out who was sending the Hogwarts Professors highly dangerous surprise Christmas gifts. It turned out to be Penny Haywood, who had accidentally made the presents dangerous. The third mystery was related to a curse caused by an old love correspondence between two students, Gwendolyn and Muriel. The fourth mystery was to catch two elusive Golden Snitches. The fifth mystery was to figure out if the Hogwarts founders were responsible for causing damage to Hogwarts Castle. The sixth mystery was to break the curse on Salazar Slytherin's compass and find the snakewood tree branch. The seventh mystery was to discover the source of the cheating scandal at Hogwarts. The eighth mystery was to locate and neutralise several cursed artefacts that had been stolen from various places around Hogwarts.

The Spore Scrolls

Mysterious Warning

The Library's Never-Founds

A Misplaced Letter

Dark Confession

A Sneaky Little Secret

An Unlikely Treasure Map

Hogwarts Holiday Gift Conundrum

Messy Mishaps

A Plumpy Gift

The Cursed Manoeuvre

A Dangerous Surprise

A Suspicious Holiday Secret

Gift Overload

Love and Happiness

Love's Letters Lost

Tears for Fears

The Weirder Sisters

News by Night

A Heap of Horklumps

Whispered Spells

Golden Snitches On The Loose

A Golden Snitch's Nest

An Elusive Golden Snitch

An Alarming Anniversary

Gryffindor's Hazardous Hearth

Hufflepuff's Miniature Furniture

Stolen Goods

Ravenclaw's Brutish Beast

Slytherin's Frozen Floor

A Feast In Need Of Saving

Revised Curriculum

A Witness in the Wall

Salazar Slytherin's Forgotten Treasure

A Sorting Dissent

A Peek Into the Past

A Long Lost Secret

A Dangerous Encounter

A Key Part of the Puzzle

An Unexpected Ally

A Thief in the Dungeons

A Forgotten Treasure

Start of Term Mayhem

School Secrets

Rumour Mill

Merula's Mishap

First Day Jitters

Failing Marks

Missing School Supplies

Swish and Flick

The Welcome Feast

DADA Disaster

Devious Designs

Dark Detection

Case of the Cursed Idol

Defense Against Boredom

Filch's Fright

Iron Maiden of Doom

Fleeing Lessons

Laughter in the Library

Behind the scenes

• The Hogwarts Diary is used in-game to present the player with various puzzles to solve.

Appearances

• Harry Potter: Hogwarts Mystery (First appearance)