1 - 20 of 4,540 Works in Alternate Universe - Detectives
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The man pulls out a thick folder from his briefcase and slides it to Jungwon. The headshot of a beautiful young man pinned on the cover stares back at him.
Yang & Co. Private Investigators accepts a new case to uncover a suspected affair. It seems like a straightforward assignment at first, but as Jungwon's obsession grows, he learns too late that he's in over his head.
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shy detective yuuta comes to find himself within the mafia heir's clutches once again. don't save him, he's right where he wants to be.
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"This is Amun Academy. Liverpool’s finest breeding ground for the rich, the ambitious, and those whose parents either have a lot of money — or work for someone who does. There’s no middle ground here. You’re either eating caviar or flipping burgers at the corner shop. I’m the type who prefers knowing who’s cheating on who — or who’s lying about their alibis."
When Joy Mercer mysteriously disappears from Amun Academy, Patricia Williamson is determined to find out what happened. Instead of going it alone, she turns to Victoria Mars, the daughter of a private investigator and an expert at solving mysteries. With Victoria’s sharp instincts and P.I. skills, the girls start to unravel the secrets hidden within the walls of Anubis House—secrets far more dangerous than they ever imagined.
You don't need to watch Veronica Mars to read this fanfiction. The only things that are taken from Veronica Mars are the last name (Mars), Veronica's sassy and cynical personality, and the idea of the teenage private eye in school.
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Burning Transparent by owl_beans
Fandoms: 呪術廻戦 | Jujutsu Kaisen (Anime), 呪術廻戦 | Jujutsu Kaisen (Manga)
27 Jun 2025
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“Careful, Suguru. It almost sounds like you still care.” Satoru said tonelessly, unequivocally reminding Suguru of the distance between them.
Suguru’s expression shuttered, a flicker of sadness flitting over his face before he went similarly cold. “Force of habit, I suppose.” He murmured.
Satoru’s mind went to the empty space that he patted every morning, the loneliness that ripped through his chest every time he kissed his ring before sleeping and after waking.
“Better learn how to break it before it gets you in trouble, Suguru.” Satoru clicked his tongue, turning on his heel and leaving before either of them could say anything stupid.
Or,
Gojo Satoru was the best detective in Tokyo. His routine boiled down to maintaining an impeccable closure rate, doting on his kids, and pining over his ex-partner.
That was until his personal boogeyman decided to make his life a nightmare once again.
Series
- Part 1 of ✨That One SatoSugu Detective AU✨
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Ren Amamiya is an up-and-coming detective in the world of the Tokyo police force. Wanting to become more, they are assigned the task of finding and capturing the mythical, ghost-like serial killer of criminals, “The Black Mask”, in order to solidify their existence for the history books.
What started off as a mundane life of dealing with petty thugs has landed Detective Amamiya in the deep depths of corruption, underworld politics, betrayal, and bloodshed - as well as a love that will haunt him for the rest of his waking life.
Inspired by the oneshot story by Homura Kawamoto, “Marriage of Murder and Lies”.
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Detective Rio Vidal catches the case of a serial killer in New York City. The crime scene is staged like the murder scenes from the famous Witch Killer books written by Agatha Harkness. Wanting to help solve the case and provide insight the writer offers to work with the detective to find the killer. The two make an unlikely pair, constantly butting heads and fueling the underlying tension.
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Two suns surrounded by the dark sky by White_cat_loves_meatbuns8902
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game), 二哈和他的白猫师尊 - 肉包不吃肉 | The Husky and His White Cat Shizun - Meatbun Doesn't Eat Meat
26 Jun 2025
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Inspired by the Fanfictions :
'Lawbreaker's Lullaby: Bloody Chains of Freedom' by Sundaylover888
'The Hunter and the Prey' by Deans cookie before its rewriting
‘Old Loves Made New’ by Kitabunns
‘What we choose’ by BlueSapphire718
‘Sing me To Sleep Now...-Ft. Bai Jing’ by Velocity Spell
After surviving a very extreme attack launched by criminals from a high organization, Jing Yuan now hoped to live quietly with the rest of his family.
Unfortunately, little did he know, that the same criminals returned to target them again, for reasons unknown to them.
The more clues come to light, the more the attacks occur, the more the truth reveals itself, and this truth turns out to be very troubling, uncovering the secrets of this dark criminal organization and the remnants of the past that could not be properly buried.
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Người yêu tôi nơi đâu? by ongvang
Fandoms: Anh Trai Vượt Ngàn Chông Gai | Call Me By Fire (Vietnam TV)
25 Jun 2025
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Tăng Vũ Minh Phúc là một thanh tra thuộc tổ điều tra số 4 sở cảnh sát thành phố. Một ngày có một vụ đột nhập ở biệt thự của ông thư ký Sở Tư pháp nhưng không có thứ gì bị lấy mất. Vốn tưởng là một vụ đột nhập đơn giản, các bằng chứng bày sẵn ra trước mắt, ấy vậy mà càng đào sâu lại càng như lạc vào mê cung. Thế rồi mọi thứ trở nên phức tạp khi người yêu của Phúc, nhà văn Phạm Duy Thuận, bị những kẻ đột nhập bắt cóc.
Series
- Part 1 of Case closed
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The Buttered Cat Paradox by writersagainstwritersblock
Fandoms: Batman - All Media Types, Nightwing (Comics)
25 Jun 2025
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“No comment.”
“You don’t know what I was going to ask,” Clark said with a hint of a smile. “Maybe I just wanted to congratulate you on catching the Film Freak.”
Bruce gave him a flat look.
“Or maybe I think I can help.”
“With a case of vandalism?”
Clark stepped in front of him. “It’s not vandalism and you know it, detective.”
“And what makes you say that?”
“If it were vandalism it would be something a lot more juvenile. To the point. It wouldn’t claim there were seventeen missing kids. That’s public outcry.”
“Is that so?”
“That and I tried to do a story on the growing number of homeless children last month and I got shut down. According to the last count, the numbers have been decreasing, but there’s been no change in policies, no extra funding to CPS, or shelters, or even an increase in the number of inmates in the juvenile detention center. So where are they going?”
Detective Bruce Wayne may have the highest solve rate in Gotham, but if he wants to solve this case, he’ll need the help of an elusive street kid, and while Dick Grayson always lands on his feet, he usually lands himself right into trouble.
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Murder Is A Money Game by TheRoyalCattenQueen
Fandoms: Transformers - All Media Types, Transformers One (2024), Transformers Generation One
25 Jun 2025
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When a Sage of Primus is murdered in cold blood, the only detective for the job is Ex-enforcer Prowl and his co-worker (read: Assistant) Smokescreen. But as a mech shows up, seeming to fit the evidence perfectly, and layers upon layers of the case unravel, Prowl can't help but feel like something is going very wrong. There is a rot at the foundation of their society, and the hollow space it leaves behind allows even worse things to fester and grow. Jazz has to prove he didn't murder anyone, Prowl has to stop Jazz from running away, and the two have work together to solve the mystery.
Will Prowl's open secret finally be the ruin of him?
Will he catch the real killer?
Will Jazz stop flirting with him?
This and more on Iacon broadcasting corporation channel 5.
Tune in maybe Bi-weekly if I'm going crazy, once a month if not.
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Two months on from their meeting on the Orient Express, The World's Greatest Detective, Erwin Smith, and his companion Levi Ackerman arrive in New York City. Having travelled together for a few months, the two plan to visit The Maria, Nile Dok and Marie Stock's new cabaret club. When things take a turn for the worst, and a wealthy woman turns up dead on opening night, Erwin must put aside his plans to find her killer.
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“This is going to be awful.” Levi says.
Erwin turns to face him with an incredulous smile. “It’s a club, Levi. It’s going to be busy.” He points out.
“I know.” Levi grits through his teeth. “Why did you bring me here?”
Erwin watches as Levi deposits his now empty glass on the bartop and waves away the bartender that offers him a refill. Erwin taps his fingernail against the rim of his own drink and listens to the clink of the glass right as the band begins to play.
“Because I like your company.” He answers simply.
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Note: This is Part Two of The Many Cases of Erwin Smith, following on from it's prior work, The Journey From Istanbul to Calais.
Series
- Part 2 of The Many Cases of Erwin Smith
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My favorite suspect by immoralfairy
Fandoms: Dangan Ronpa Series, New Dangan Ronpa V3: Everyone's New Semester of Killing
24 Jun 2025
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Shuichi Saihara, a well-known detective in Japan is hired to investigate a serious of murders caused by an unknown organization. He meets one of the main suspects, Kokichi Ouma. Will he be the key to solving the case or will he be the detective's downfall?
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All The Love Song Sound The Same by LilyanaAZ
Fandoms: 鸣潮 | Wuthering Waves (Video Game)
24 Jun 2025
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“In any place in the whole world, wherever this love song was heard, I’d shook my head and smiled softly. If only this song was written by me.”
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Brantyao phantom thief x detective AU.
- Language:
- English
- Words:
- 2,276
- Chapters:
- 1/?
- Kudos:
- 1
- Hits:
- 36
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In a world where every leaf, speck of soil, and grain of pollen tells a story, Charlotte Matthews has learned to listen. A forensic ecologist and botanist with a razor-sharp intuition, Lottie specializes in palynology—the study of pollen. She works at the eerie crossroads between nature and murder. She sifts through moss and rot to uncover truths buried in the earth, her hands more at home in mud than in human company. Her expertise has cracked high-profile cases wide open, drawing confessions from the guilty with nothing more than a slide and a microscope.
When young detective Natalie Scatorccio, hard-edged, and disillusioned with the system, hits a dead end in the investigation of Akilah’s murder, he’s forced to consult Lottie, someone he once mocked for “talking to trees.” by his fellow detective, Van Palmer. But Natalie quickly realises Lottie’s methods are unorthodox for a reason: they work. Alongside a team of fellow detectives—Shauna Shipman, Jackie Taylor, Van Palmer, Misty Quigley, and Taissa Turner.
As clues buried in spores and soil begin to uncover secrets, Natalie finds himself pulled not just into the dark logic of the case, but into the strange, serene gravity of Lottie herself.
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After All by BobcattyChatty
Fandoms: Doctor Who (2005), Doctor Who, Doctor Who & Related Fandoms
24 Jun 2025
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After a fairy tale-level start, the Noble family is forced to navigate the realities of their life in London; from growing pains to terrorist activity, the course of a true 'Happily Ever After' never ran smooth, did it?
Human AU
Sequel to 'Tiny Dancer', and because I'm a huge fan, also named after an Elton John song.
Series
- Part 2 of Tiny Dancer-verse
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Rival Detectives (Rusame) by Crowsong_The_Rusame_Reader
Fandoms: Geography (Anthropomorphic)
23 Jun 2025
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Recently, a prolific well-loved journalist has turned up dead, the family wants answers. Two of the best detectives are pulled onto the case by the family of the journalist. Problem is, they have a long standing rivalry.
Can the two solve the case?
(Crossposted on wattpad under Rainbowstar_772) -
A Waltz in Crimson Shadows by Kanaenawives
Fandoms: プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
23 Jun 2025
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In the heart of an old, crumbling agency, a group of detectives navigates through layers of secrets, lies, and dangerous missions.
With old wounds resurfacing and new threats emerging, Rui's quest to find his missing sister leads him deeper into a world of shadows and deception. In a place where trust is fragile and loyalty is tested, can Rui protect those he loves without losing himself in the process?
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The tall figure sat quietly on an old wooden chair with splinters dangling from the corners, partly from age and partly from its use as a scratching post for the cats. The joints seemed to creak every time the user's weight shifted. Small slits of sunlight dapped the floor as the morning sun angled in through the shutters, creating easily visible shafts of dust. A single light was turned on as it had been for all of the previous night. The sole shaft of warm yellow light from the dusty adjustable lamp had been the only source of light in the room for the past 10 hours. The slumped figure behind the wooden desk still wore their fluffy plaid trapper hat despite the growing summer heat. The piles of faded yellow folders were piled higher than usual, which wasn’t saying much considering the standard state of the office.
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Hansol is different in 1995, in 2002, and in 2012. Minghao isn't so different at all. Neither is the murder case they're trying to solve.
It’s been a long time since Hansol was doing any kind of interviewing in a police station. He’s never been on this side of it either—never been the one to be interviewed like he’s being scrutinized. He’s always been on the other end of the scrutinizing. The scrutiny. You know what he means.
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Pix picks up a very strange hitchhiker and takes her on a small road trip before their pasts must be reckoned with.