The Spy’s Birthday Card
Your character is a retired spy who's pulled back into the game when they receive a cryptic message hidden in a birthday card from their grandchild. Now, with family unknowingly involved, they must uncover the sender and their motive before old secrets threaten new lives.
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 Spy Thriller prompts
- The Singer's Hidden MicrophonesWhile cleaning an old attic in Vienna, a retired opera singer discovers a hidden collection of microphone-equipped vintage props. Suspecting they…
- The Spy Left for DeadA seasoned spy is on the verge of cracking a major global conspiracy when they're betrayed by their partner and left for dead in a foreign city.…
- The Digital WeaponDuring a routine surveillance mission, an intelligence operative stumbles upon an underground group planning to release a digital weapon that could…
- The Silicon Valley SpyImagine a scenario where a spy must infiltrate a high-profile tech company suspected of selling state secrets. They must maintain their cover while…
Fifteen minutes in? Keep going.
Chapterly gives a draft somewhere to grow: chapters, daily word goals, and readers when you're ready.
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