Alternate Universe - Detectives FanFiction

Subtle Danger

Subtle Danger

F/F
G
Updated
11.04.2025
Fandom
The 100 (TV)
Characters
Clarke Griffin/Lexa, Clarke Griffin, Lexa (The 100), Clarke Griffin & Lexa, Bellamy Blake, Marcus Kane (The 100)
Tags
Slow Burn Internal Conflict Power Dynamics Character Study Romance Internal Monologue Alternate Universe - Detectives Psychological Drama psychological tension Detective Lexa (The 100) Character Analysis Emotional Buildup
Clarke came for the case. Not for her.Agent Clarke Griffin arrived to profile a killer, not to unravel beneath the gaze of the woman leading the charge.Detective Lexa Woods is a study in control—calm, composed, untouchable. She dissects crime scenes...
Harrow

Harrow

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Harry Potter, Kingsley Shacklebolt, Alastor "Mad-Eye" Moody, Tom Riddle, Harry Potter/Tom Riddle, Rufus Scrimgeour
Tags
Murder Mystery Post-Traumatic Stress Disorder - PTSD Emotional/Psychological Abuse Mind Games Dark Magic Alternate Universe - No Voldemort Serial Killers Alternate Universe - Detectives Graphic Description
When a new murder mirrors a string of unsolved killings, former Auror Harry Evans is pulled back into a nightmare he thought he'd buried. Suspended after a case that shattered his career, he now faces a chilling truth: someone is resurrecting his pas...
ENG_Can I hunt your mind?

ENG_Can I hunt your mind?

F/F
G
Updated
11.04.2025
Fandom
Arcane: League of Legends (Cartoon 2021) League of Legends
Characters
Original Male Character(s), Caitlyn/Vi (League of Legends), Caitlyn (League of Legends), Vi (League of Legends), Jinx (League of Legends), Vander (League of Legends), Cassandra Kiramman, Maddie Nolen, Grayson (Arcane: League of Legends), Loris (Arcane: League of Legends), Steb (Arcane: League of Legends)
Tags
Developing Relationship Alternate Universe - Modern Setting Friends to Lovers Oral Sex Murder Crimes & Criminals Crime Fighting Drug Use Sex Lesbian Sex Friends With Benefits Alternate Universe - Detectives
The story follows a young detective, Caitlin Kiramman, who has just joined the Bureau of Criminal Investigations. She is ambitious, intelligent, and ready to give her all to prove her professionalism. She will have to face the ruthless reality where...
dark blue stains (all on my palms and all in my mind)

dark blue stains (all on my palms and all in my mind)

F/F
G
Updated
11.04.2025
Fandom
Marvel Cinematic Universe Agatha All Along (TV) Argylle (2024)
Characters
Agatha Harkness/Rio Vidal, Agatha Harkness & Rio Vidal, Agatha Harkness, Rio Vidal, Billy Maximoff, Jennifer Kale, Alice Gulliver, Lilia Calderu, Evanora Harkness, Wanda Maximoff, William Kaplan (Agatha All Along), Señor Scratchy (Marvel),
Tags
Alternate Universe - Modern Setting Character Death Other Additional Tags to Be Added Hurt/Comfort Humor Attempt at Humor Action/Adventure I Wrote This Instead of Sleeping Homophobia Attempted Murder Kind Of Sort Of
When the plots of reclusive author Agatha Harkness's fictional espionage novels begin to mirror the covert actions of a real-life spy organization, quiet evenings at home become a thing of the past. Accompanied by her rabbit and Rio, a spy, Agatha ra...
Guns loaded!

Guns loaded!

F/F
F/M
M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Characters, Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, James Potter/Lily Evans Potter, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon,
Tags
Fluff Alternate Universe - Modern Setting Angst Slow Burn Original Character(s) Alternate Universe - College/University Alternate Universe POV Multiple Marauders Era (Harry Potter) POV Remus Lupin Alternate Universe - Muggle Pansexual James Potter
The marauders are in their last year of police university. They think it will be a normal year but they're in for a surprise. And more surprises after that.
Smoke Signals

Smoke Signals

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, Lily Evans Potter, Lily Evans, Pandora Lovegood, Mentions of - Character
Tags
Fluff Alternate Universe - Modern Setting Flirting Detectives Crimes & Criminals Happy Ending Anxiety Cigarettes wolfstar idk - Freeform ish Police
Sirius gets accused of vandalismHe doesn’t really care, because:1. He really needs a smoke2. The officer interrogating him is hot3. Said officer has a cigarette
"Focus, Enid. . ."

"Focus, Enid. . ."

F/F
G
Updated
11.04.2025
Fandom
Wednesday (TV 2022)
Characters
Wednesday Addams, Enid Sinclair, Wednesday Addams/Enid Sinclair
Tags
Alternate Universe - Detectives This one-shot is based off the fanart of the two in the tub The one on Twitter by karenacobs Oh and i was slightly drunk while writing
Wednesday tugs at the tie once again, Enid gives a soft low growl at that. “Will you stop that?”ORThis is just based off a fanart on twitter from the lovely karenacobs that I can't get over because it's just SO good.
It Takes A Genius (To Understand A Psychopath)

It Takes A Genius (To Understand A Psychopath)

F/F
G
Updated
12.04.2025
Characters
Other Relationship Tags to Be Added, Minor or Background Relationship(s), Celeste (YHS)/Evelyn (YHS), Alec (YHS)/Elijah (YHS), Kyran (YHS)/Evan (YHS), Brittney (YHS)/Felicia (YHS), Valerie Maki (YHS)/ItsFunneh | Funneh (YHS), One-sided Valerie Maki (YHS)/Kai | Senpai (YHS), Celeste (YHS), Evelyn (YHS), Alec (YHS), Kyran (YHS),
Tags
Angst Hurt/Comfort Falling In Love First Kiss Blood and Violence Jealousy Aged-Up Character(s) Implied/Referenced Drug Use Implied/Referenced Alcohol Abuse/Alcoholism Alternate Universe - Detectives
The moment their department decided to reopen an ancient murder case due to certain circumstances, Evelyn knew she would be assigned to the task. What she didn’t know was that figuring out the case would be easier than figuring out her group members.
Poison (I wanna love you but I better not touch)

Poison (I wanna love you but I better not touch)

F/F
G
Updated
12.04.2025
Fandom
Stranger Things (TV 2016)
Characters
Nancy Wheeler, Robin Buckley, Robin Buckley/Nancy Wheeler, Robin Buckley & Nancy Wheeler
Tags
Friends to Lovers Murder Mystery Alternate Universe - Rock Band Gay Panic Friends With Benefits wlw Alternate Universe - Detectives Bisexual Nancy Wheeler Robin Buckley & Steve Harrington Are Best Friends gay gay homosexual gay idk yet Robin Buckley Has a Crush on Nancy Wheeler
Basically what happens is barb is robins assistant, Robin is a singer, barb is murdered (drowned in a pool) Nancy is a private investigator and Robin calls on her to solve the mystery B U T it brings Nancy back to old memories because barb used to be...
Blue's clues

Blue's clues

G
Updated
18.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Severus Snape
Tags
Alternate Universe - Detectives Severus Snape - Freeform
Severus is on the case
No Shit, Sherlock

No Shit, Sherlock

F/F
M/M
G
Updated
13.04.2025
Fandom
Kuroko no Basuke | Kuroko's Basketball
Characters
Kagami Taiga, Kagami Taiga/Kise Ryouta, Aida Riko/Momoi Satsuki, Himuro Tatsuya/Nijimura Shuuzou, Aida Riko, Himuro Tatsuya, Alexandra Garcia, Kise Ryouta, Momoi Satsuki, Nijimura Shuuzou, Haizaki Shougo, there are more but i'll just add the ones that appear in the next chapter when i post the next ch
Tags
Sexual Content Romance Sexual Tension Mystery Alternate Universe - Detectives Alternate Universe - Criminals technically PI au but they didn't really give me that option lol Private Investigators or at least there will be... :3c
Private Investigator AU. Criminal Underground AU.Local Inquiry Agents Himuro Tatsuya, Aida Riko, and Kagami Taiga learn the hard way just how interconnected an adultery case, the search for a ghost-man, a lunch date with a paralegal, and the daytime...