The Detective's Unsolved Case
Create a narrative around a retired detective who is haunted by an unsolved case from their past. The detective decides to tackle the case on their own following a pattern that only they seem to have noticed. Each step closer to the truth puts them and their loved ones in greater danger.
Suggested length: A short story: 1,500 to 5,000 words, or flash fiction under 1,000
Start the clock
Pick a sprint, press start and keep going until it stops. Momentum beats polish on a first draft.
Make it yours
Three ways to take this prompt somewhere nobody else will.
- Open with the threat already in motion, not the setup.
- Make the person helping your hero the one to worry about.
- End a scene on a phone call, a knock or a name.
Writing thriller books
Something terrible is coming. Can they stop it in time?
Where a mystery looks back at a crime, a thriller looks forward at a threat. The reader often knows more than the hero, and the tension comes from watching danger close in. Short chapters, high stakes and a ticking clock are the tools of the trade.
What readers expect
- A clear, escalating threat
- A hero under pressure
- Twists and reversals
- Pace: little time to breathe
A tip before you start
Put a clock on it. A deadline the reader can count down turns every scene into a race.
More Crime Thriller prompts
- Packages on Maple StreetIn a quiet suburban neighborhood, a series of seemingly random households receive identical, unmarked packages on their doorsteps. Each package…
- The Mayor's SecretWrite a story where a small town's beloved mayor is found guilty of a series of crimes. The protagonist, a local journalist, is unsure if the mayor is…
- The Missing Festival QueenSet in a small coastal town, an annual festival turns sinister when the crowned festival queen disappears. A local journalist, skeptical of the…
- The Wallet at 30,000 FeetDuring a turbulent flight, a passenger finds a forgotten wallet containing cryptic notes about an upcoming illegal trade. Deciding to stop it, the…
Fifteen minutes in? Keep going.
Chapterly gives a draft somewhere to grow: chapters, daily word goals, and readers when you're ready.
Plans from $9.99 a month. Cancel any time. Your words are always yours.