Case Fic — Tag Meaning
A fandom-specific structure born in procedural fandoms: the fic is organized around the characters working a case, hunt, or mission, the way an episode would be. The case provides the skeleton while character dynamics and relationships develop in its margins — many beloved long fics are case fic with a romance threaded through.
What to Expect From "Case Fic" Fics
An episode-like plot with investigation beats, often substantial in length, with relationship development woven around the casework.
How to find Case Fic fics on AO3
On AO3, click any tag to see every work that uses it, then refine with the "Filters" sidebar — combine it with your fandom or ship, set a rating, or exclude tags you don't want. See our AO3 filtering guide for the full walkthrough.
Browse "Case Fic" works on AO3Want the deep dive? Read our full trope guide: Case Fic →
Popular Fics Tagged "Case Fic"
Real examples from AO3's most-kudosed works:
This Dangerous Game
by MissDisoriental
Professional Couple Only
by saltyfeathers
Linger in the Sun
by etymologyplayground
in technicolor
by deniigiq
The Tunnel of Love
by xylodemon
All the Best and Brightest Creatures
by wordstrings
Related Tags
Mystery
Tags plot-driven fic built around a question to be solved — a crime, a disappearance, an inexplicable event. Detective fandoms produce mysteries constantly, but the tag also covers any fic where the investigation structure carries the story and the reader is invited to puzzle along.
Tag guide →
Action/Adventure
The canonical tag for fic where physical stakes drive the plot — fights, chases, quests, missions. It signals that the author invested in external conflict and set pieces, not just interpersonal drama, and it is often the home of long, ambitious plotty fic.
Tag guide →
Canon-Typical Violence
A calibration tag meaning the violence matches what the source material already shows — no more brutal than an average episode or chapter of canon. It lets authors of action-fandom fic skip the Graphic Violence warning while still being upfront that fights, battles, or bloodshed occur.
Tag guide →
Slow Burn
The tag that warns — or promises — that the central relationship will take a very long time to arrive. Slow burn is a craft commitment: tension built across tens of thousands of words, feelings denied and deferred, every near-moment interrupted. Its devotees consider the wait the entire point.
Tag guide →
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