The Half-Exposed Double Agent
Create a tale centered around a double-agent during the Cold War, who begins receiving cryptic messages that suggest their cover is blown—but only halfway. They must figure out which side knows their secret and how to stay alive long enough to complete their mission.
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.
- Raise the stakes from personal to public halfway through.
- Open with the threat already in motion, not the setup.
- Make the person helping your hero the one to worry about.
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 Spy Thriller prompts
- The Spy's False MissionImagine a spy who specializes in digital espionage but discovers they’ve been manipulated to weaken their own country’s security. Faced with a crisis…
- Treaties on New High GroundIn a future where global warming has drastically reshaped coastlines, a spy thriller unfolds as operatives from drowned nations scramble to secure…
- The Spy's Last MissionWrite a story about a retired spy who is forced back into one last mission to save an old colleague thought to be dead. As the truth unravels, it…
- Spies on Maple StreetWrite about a rookie spy assigned to surveil a mundane suburban neighborhood, only to uncover a network of spies from various countries all living…
Fifteen minutes in? Keep going.
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