Detective Harry Potter FanFiction

The Plagues

The Plagues

M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Harry Potter, Hermione Granger, Ginny Weasley, Tom Riddle | Voldemort, Colin Creevey, Tom Riddle, Voldemort (Harry Potter), Harry Potter/Tom Riddle, Hermione Granger & Harry Potter & Ron Weasley, Harry Potter/Tom Riddle | Voldemort, Hermione Granger & Harry Potter, Harry Potter/Voldemort,
Tags
Other Additional Tags to Be Added Blood and Gore Crime Fighting Blood and Violence Alternate Universe Organized Crime Morally Ambiguous Character Stalking Serial Killers Tom Riddle is Obsessed with Harry Potter Morally Grey Harry Potter Morally Grey Hermione Granger
Harry Potter, head Auror, is obsessed with catching Voldemort—a ruthless serial killer who leaves behind nothing but bodies and cryptic messages. As the hunt intensifies, he finds himself drawn to the enigmatic politician Tom Riddle, unaware that the...
Off to a Bad Start

Off to a Bad Start

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Draco Malfoy/Harry Potter, Draco Malfoy, Ron Weasley, Hermione Granger, Neville Longbottom, Luna Lovegood, Hermione Granger/Ron Weasley, Your mother - Character, And Me, sitting in a tree - Character, K-I-S-S-I-N-G - Character
Tags
Morally Grey Harry Potter Herbology Professor Neville Longbottom Detective Harry Potter Potions Master Draco Malfoy Unspeakable Luna Lovegood unemployed ron weasley cause why not (he just does random side hustles) like he's not a amazing guy but he's not evil harry is a whiney bitch cause lifes been a whiney bitch to him mother hermione fr fr i feel sorry for her
harry and draco meet again through friends, neither is happy about being forced to be friendly
Harry Potter and the New Girl

Harry Potter and the New Girl

Other
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling Skulduggery Pleasant - Derek Landy
Characters
Harry Potter, Ghastly Bespoke, Skulduggery Pleasant, Tanith Low, China Sorrows, Mr. Bliss (Skulduggery Pleasant), Valkyrie Cain, Nefarian Serpine
Tags
Sort Of My First Fanfic Morally Grey Harry Potter Animagus Harry Potter Adopted Harry Potter No Horcruxes Detective Harry Potter OP Harry Potter Valkyrie Cain & Skulduggery Pleasant Friendship Book 1: Skulduggery Pleasant Valkyrie Cain is a wizard Please support the official authors
Harry Potter landed in this dimension 6 years ago. It's now 2007, and a mysterious death brings new friends. An old enemy is making a move for power, but how will they handle the junior detective and his thirst for answers?
Snowbanks and Surprises

Snowbanks and Surprises

F/F
M/M
G
Updated
19.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Female Character(s), Original Male Character(s), Harry Potter, Draco Malfoy/Harry Potter, Draco Malfoy, Hermione Granger, Pansy Parkinson, Hermione Granger/Pansy Parkinson, Sirius Black/Remus Lupin (implied), Narcissa Black Malfoy (mentioned), Original Female Dog Character(s)
Tags
Mild Hurt/Comfort Car Accidents Diabetes Christmas Fluff Snow Alternate Universe - Mortal Detective Harry Potter Service Dogs Doctor Draco Malfoy Fashion Designer Pansy Parkinson Doctor Hermione Granger
It's a few days before Christmas and Draco misses Harry. (This is my first work on Ao3, hope it isn't too bad! Story is much better than summary.)
Love's Favorite

Love's Favorite

M/M
Other
G
Updated
19.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Characters, Harry Potter, Tom Riddle | Voldemort, Diary Tom Riddle, Marietta Edgecombe, Harry Potter/Tom Riddle/Voldemort
Tags
Threesome - M/M/M Soulmate-Identifying Marks Alternate Universe - Modern with Magic Manipulative Albus Dumbledore Smart Harry Potter Reincarnated Harry Potter Detective Harry Potter Snake-Like Voldemort (Harry Potter) Sherlock Holmes is Harry Potter Sherlock Holmes Makes Deductions Voldemort is impressed Tom is smitten
He is Sherlock Holmes — a self-proclaimed high-functioning sociopath and an certified genius.Or rather, he was Sherlock Holmes.He didn't really know what had happened as everything seemed to progress so quickly. He remembered pain, then standing in a...