The Detective's Missing Key
Imagine a scenario in which a retired detective receives a mysterious letter that contains a key and an address. Upon visiting the address, the detective finds themselves trapped in a game of cat and mouse with an elusive criminal they failed to catch during their career.
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.
- Put a clock on it: the hero has until midnight.
- Trap your hero in one place they can't easily leave.
- Raise the stakes from personal to public halfway through.
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 Thriller and Suspense prompts
- Midnight CoordinatesA retired detective receives a mysterious letter that only contains a single GPS coordinate and a time stamp for midnight, three days later. Driven by…
- The Catastrophe FilesDevelop a story about a professional hacker who is hired to steal data from a seemingly benign software company. During the heist, they uncover a…
- The Museum HeistA close-knit team of professional thieves takes on their most challenging heist yet: stealing a priceless artifact from a heavily guarded museum.…
- The Detective's Birthday LetterWrite a story in which a retired detective receives a puzzling letter on the eve of their 60th birthday, implicating them in a crime they might have…
Fifteen minutes in? Keep going.
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