Give the story a new conversation
What would a character say if they had time to sit down and write? A letter can hold the apology they never managed to speak, a question they were afraid to ask, or news that arrived after the final page. Writing from one character to another lets readers explore those possibilities without needing to invent an entirely new story.
The activity works with almost any book that has two characters whose choices affect each other. They might be friends, rivals, relatives or people who meet only briefly. Their relationship gives the letter a purpose: one person has something to tell the other, and the reader gets to decide what that message might be.
Choose the sender, recipient and moment
Start with a simple sentence: “After ______, ______ writes to ______.” Place the letter at a specific point in the story, such as just before a difficult decision or just after a surprising encounter. That moment gives the writer a useful boundary. A letter written halfway through a book should not refer to events the sender has yet to discover.
Next, decide why the sender is writing. Do they want to explain, persuade, thank, warn or reconnect? A clear purpose helps more than a complicated plot. For example, a character who has kept a secret might write to explain why they stayed quiet. Another might ask for help but struggle to admit they need it.
Before drafting, return to a scene involving either character. Notice a few small details: an object one person carries, a place they remember, a phrase they often use or a subject they avoid. The letter does not need a pile of references to prove it belongs to the book. One well-chosen detail can make the imagined exchange feel grounded.
Let the character’s voice guide the writing
A believable letter reflects both what the character knows and how they might express it. Someone who speaks bluntly may write short, direct sentences. Someone who worries about being misunderstood might explain the same point several ways. Voice is not just a collection of favorite words; it also appears in what a character chooses to mention, hide or ask.
Try beginning with a line that gets straight to the reason for writing: “I should have told you what happened at the gate.” Then let the sender respond to something specific from the story. What did they think was happening at the time? Have they changed their mind? What do they hope the recipient will do after reading? These questions can form the middle of the letter.
For the ending, resist the urge to settle every problem. A character can say what they need to say while leaving room for uncertainty. “I hope you’ll answer” may fit better than a perfect reconciliation, especially if the book has shown that trust takes time. A greeting and sign-off can add personality, but the emotional choice at the end matters more than the format.
Make the activity your own
For a quick version, write a postcard of five or six sentences. For a longer session, draft a full letter and then write the recipient’s reply. Younger writers can dictate their ideas to a partner or draw a picture to accompany a short message. A group can choose the same pair of characters and compare how differently each person imagines their private conversation.
If you get stuck, change the audience. A character might write to someone who has left the story, to a person they barely know, or even to their earlier self. You can also move the letter to the day after the book ends and ask what remains unresolved. Whatever you choose, keep the book nearby: the most interesting inventions often grow from something the author has already placed on the page.
When the letter is finished, read it once as the recipient. Would they recognize the sender? Would they understand the message, or would they ask a question back? That final check turns a writing exercise into a fresh way of thinking about the characters—and may send you back to the story to notice something new.
