Some messages arrive with your name on them. Others turn up in a secondhand book, appear on the wrong screen, or fall out of a drawer you were supposed to leave alone. You read a few words before realizing they weren’t meant for you—and by then, you have a reason to keep reading.
A misplaced message can give a character a secret, a temptation, or a difficult choice. Do they tell the intended recipient? Pretend they never saw it? Follow the instructions? The answer can take a story in almost any direction.
These ten prompts offer starting points for horror, suspense, science fiction, mystery, and drama. Change the characters, setting, or genre to suit your story, and decide how much trouble one message can cause.
1. The Letter Dated Next Week
You buy a secondhand novel and discover a sealed letter tucked into the final chapter. It’s addressed to you in your own handwriting, but the date is seven days away. Inside is an apology for something you haven’t done—and a request that you destroy the book before reaching the last page.
2. Condolences for the Living
An email intended for someone with your name offers condolences for the death of your closest friend. You’re about to delete it when you notice an attachment: a photograph of their fatal accident. Your friend is sitting across the table from you, wearing the clothes shown in the picture.
3. Your Mother’s Unsent Message
While sorting through your late mother’s phone, you find an unsent text addressed to an unfamiliar number: “If she asks about her childhood, tell her nothing.” You call the number. The person who answers recognizes your voice immediately, although you’ve never spoken before.
4. The Wrong Confession
A stranger accidentally sends you a voice message confessing to a crime. Before you can decide what to do, a second recording arrives. This time, the stranger is begging you to disregard the first message. In the background, someone quietly tells them what to say.
5. The Applicant Before You
Minutes before a job interview, you find a folded note beneath your chair in the waiting room. “They offered me everything I asked for. Whatever they offer you, ask why the position is vacant.” When the interviewer opens the door, they glance at the empty chair beside you and ask where the other applicant went.
6. A Message Across the Years
A postcard is delivered to your house forty years late. It was written by your father to a woman whose name you don’t recognize, asking her to meet him at the station and start a new life. Your parents always described their marriage as happy. Your father is still alive, and you’re taking him to lunch tomorrow.
7. Instructions for the Next Tenant
Behind a loose bathroom tile in your new apartment, you discover a note from the previous tenant. It lists practical advice: which window sticks, when the landlord collects rent, and how to restart the boiler. The last instruction reads, “If someone knocks from inside the bedroom closet, make sure they hear you leave.”
8. The Translation Error
You’re hired to translate a journal recovered from an abandoned research station on another planet. Most of it describes equipment failures and the crew’s preparations to evacuate. Halfway through, the writer begins addressing you by name. They know which passages you’ve translated incorrectly, and they want you to leave those errors in the official report.
9. The Wedding Envelope
While helping your sister prepare for her wedding, you accidentally open an envelope intended for her fiancé. Inside is a check and a short note: “The balance when she signs.” You recognize the handwriting as your father’s. Downstairs, he’s rehearsing a speech about how proud he is of them both.
10. The Message Under Your Paint
Renovating an old house, you strip wallpaper from a bedroom and uncover a message scratched into the plaster: “We could hear you working. Please keep going.” Beneath it is yesterday’s date. You stop scraping, and something on the other side of the wall stops too.
Turn the Message Into a Story
Choose the prompt that makes you want to know what happens next. Before writing, decide what your character stands to lose by acting on the message—and what they might lose by ignoring it. Give them a reason to make a choice, even if they would rather put the message down and walk away.
Then write the moment of discovery. Let your character read, react, and do something they can’t easily take back. You can decide who sent the message once you’ve seen what your character does with it.