Writing a synopsis is harder than writing the book. I discovered this when I had to summarize my first book for an agent and stared at the document for two hours trying to compress 60,000 words into two pages.
The problem is not length. The problem is deciding what matters. A book has dozens of scenes, subplots, and character moments. A synopsis needs only the essential spine: who wants what, what stops them, what they do about it, and how it ends.
Here is how to write a synopsis that does the job.
What Is a Book Synopsis?
A synopsis is a concise summary of your book's entire story, including the ending. It is written in third person, present tense, and covers the major plot points and character arcs from beginning to end.
A synopsis is different from other submission documents:
Query letter: Only covers the opening hook and premise. Designed to get the agent interested enough to read more.
Back-cover blurb: Written to sell the book to readers without spoiling the ending. Focuses on intrigue and emotional appeal.
Synopsis: A professional document used by agents and editors to evaluate whether your story works structurally. Reveals everything, including the ending.
Jane Friedman's guide to the query process explains how synopses fit into the broader submission package.
The key distinction: a synopsis reveals everything. You do not hold back the ending. You do not create mystery. You lay out the full story structure so a publishing professional can see whether the plot and character arcs are complete.
How Long Should a Synopsis Be?
Standard length is one to three pages, single-spaced, or two to five pages double-spaced. Some agents specify length in their submission guidelines. When no length is specified, aim for two pages single-spaced.
One-page synopsis: Covers only the essential plot beats. Best for agents who want a quick structural overview. Forces extreme focus on the core story.
Two-page synopsis: The most common length. Allows room for the protagonist's emotional arc alongside the plot beats.
Three-page synopsis: Provides space for one or two key subplots and deeper character development moments. Use when the story is complex or the agent requests a longer format.
Longer than three pages, and you are including too much detail. Every sentence must earn its place. If a plot point does not affect the protagonist's arc or the story's outcome, it does not belong in the synopsis.
Step 1: Identify the Core Story
Before writing, answer these four questions:
Who is the protagonist and what do they want?
What is the main conflict that prevents them from getting it?
How does the conflict escalate?
How does it resolve?
These four answers are the skeleton of your synopsis. Everything else is supporting detail.
For example, if your novel is about a detective investigating a cold case, your core story might be: Detective Maria Torres wants to solve her partner's unsolved murder. The police department's cover-up prevents her. Each piece of evidence she uncovers puts her in greater danger. She exposes the corruption but loses her career to do it.
If you cannot answer these questions clearly, the problem may be in the book itself. A synopsis that is hard to write often reveals structural issues in the manuscript. Think of the synopsis as a diagnostic tool, not just a marketing document.
Step 2: Write in Third Person, Present Tense
Regardless of the point of view in your book, write the synopsis in third person, present tense.
Third person: Creates professional distance and reads cleanly. Even if your novel is first person, the synopsis should use "she discovers" rather than "I discover."
Present tense: Creates immediacy and mirrors how industry professionals discuss stories in pitch meetings and editorial boards.
Example: "Sarah discovers that her sister has been hiding a second identity for twelve years. She confronts her, but the conversation exposes secrets Sarah was not prepared to face."
Compare that with past tense: "Sarah discovered that her sister had been hiding a second identity." The present tense version feels more active and immediate, which is exactly what you want in a document designed to convey the energy of your story.
This format is industry standard. Deviating from it signals that the writer is unfamiliar with professional expectations.
Step 3: Cover the Major Plot Beats
Map your synopsis to the essential beats of your story:
Opening situation: Who the protagonist is and what their world looks like before the story disrupts it
Inciting incident: The event that launches the central conflict and forces the protagonist to act
Rising action: The major obstacles and escalations, not every scene, just the turning points that change the direction of the story
Climax: The peak moment of conflict where the protagonist faces their greatest challenge
Resolution: How the story ends and how the protagonist has changed as a result of everything they experienced
For a novel structure, dedicate one paragraph to Act 1, two to three paragraphs to Act 2, and one paragraph to Act 3. Act 2 gets the most space because that is where the complications and character growth happen.
A practical approach: list every major scene in your book. Circle the ones where the protagonist's situation changes permanently. Those circled scenes are the beats that belong in your synopsis.
Step 4: Show the Character Arc
A synopsis that covers only external events reads like a plot summary. A synopsis that shows how the protagonist changes reads like a story.
Include the emotional journey alongside the plot beats. Show what the protagonist believes at the start, how events challenge that belief, and what they understand by the end.
Example: "At the beginning, Marcus believes loyalty means never questioning authority. After discovering his mentor has been manipulating him, he faces a choice between the safety of obedience and the risk of standing alone. He chooses to expose the truth, understanding that real loyalty is to principle, not to people."
The character development arc is what makes agents care about the story. Plot is the body. Character arc is the soul.
When revising your synopsis, highlight every sentence that shows internal change. If those sentences are sparse or missing, add them. A synopsis without emotional progression will read as flat even if the plot is compelling.
Step 5: Include the Ending
This is where most writers resist. You want to preserve the surprise. You feel like revealing the ending will ruin the experience.
You must include the ending anyway.
Agents and editors need to know that the story resolves. A synopsis without an ending tells them nothing about whether the book delivers on its promise. It suggests the writer either has not finished the book or does not understand the submission process.
State the ending clearly:
How is the central conflict resolved?
What happens to the protagonist?
What has changed in the protagonist's world and in their understanding of themselves?
If it is a series, what is resolved in this book and what carries forward?
Remember: agents are professionals who read endings for a living. A strong ending in the synopsis does not spoil the reading experience for them. It demonstrates that the story is structurally complete.
Step 6: Handle Subplots Selectively
A synopsis cannot cover every subplot. Choose the one or two subplots that directly affect the protagonist's arc or the main conflict. Mention them briefly, showing how they intersect with the main story.
Guidelines for subplot inclusion:
Include: A love interest that changes the protagonist's decision-making or a mentor relationship that shapes their growth
Include: A secondary conflict that raises the stakes of the main conflict or forces the protagonist to choose between competing priorities
Omit: A secondary character's backstory that is interesting but does not alter the main plot's trajectory
Omit: Atmospheric or thematic subplots that enrich the reading experience but do not drive plot decisions
When in doubt, cut the subplot. A clean, focused synopsis is more effective than a comprehensive one. The agent can discover your brilliant subplots when they read the full manuscript.
Step 7: Write Clean, Direct Prose
Synopsis prose should be functional, not literary. This is not the place for metaphors, atmospheric description, or stylistic flourishes. Clear, direct sentences that convey information efficiently.
Avoid:
Rhetorical questions ("Will Sarah find the courage to face her past?")
Cliffhanger language ("Little does she know what awaits her")
Vague statements ("Things get complicated")
Play-by-play of individual scenes or dialogue exchanges
Use instead:
Specific, concrete statements ("Sarah discovers the letter hidden in her mother's desk")
Cause and effect ("When Marcus refuses to comply, the organization targets his family")
Emotional specificity ("The betrayal forces Elena to question every decision she made in the past year")
Your voice and style shine in the manuscript. The synopsis is a structural document where clarity beats beauty every time.
Step 8: Revise for Length and Clarity
First drafts of synopses are always too long. Revision means cutting, not polishing.
Read through and eliminate:
Details that do not affect the main plot or character arc
Descriptions of setting or atmosphere that do not drive the story forward
Minor characters who do not directly influence the protagonist's decisions
Scenes that are interesting but not essential to the story's spine
Adjectives and adverbs that do not add necessary information
After cutting, read the synopsis as if you know nothing about the book. Does it make sense? Can you follow the protagonist's journey from beginning to end? Are there logical gaps where information is missing?
Have a friend who has not read the book read the synopsis with the same questions. If they can summarize the story back to you after reading the synopsis, it works. If they have questions about why a character made a decision, you need to add context.
A good synopsis reads like a complete story in miniature. Short, but satisfying.
A synopsis is a skill separate from novel writing. The ability to see your own story at the structural level, to identify what is essential versus what is decorative, makes you a better writer. The writers who can summarize their work are the ones who understood what they were writing in the first place.
Final Thoughts
A strong synopsis demonstrates that your story has a clear structure, meaningful character development, and a satisfying resolution. Focus on the essential plot and emotional arc, and present them with clarity, brevity, and complete transparency.
If the synopsis is hard to write, let it teach you something about the manuscript. The struggle often points to structural issues worth fixing before you submit.
Related Resources
FAQ
Here, I will answer the most frequently asked questions about how to write a book synopsis.
Do I need a synopsis for self-publishing?
Not for submission, but writing one is still valuable. A synopsis forces you to verify that your plot and character arc are complete. It is a free structural check for your own manuscript. Many self-published authors who skip this step discover plot holes only after publication.
Should I write the synopsis before or after the book?
After. A synopsis is a summary of the completed story. Writing one before the book is an outline, which is a different document with a different purpose. Some agents accept a synopsis of an unfinished manuscript for nonfiction proposals, but fiction synopses should describe the finished book.
How do I handle multiple POV characters in a synopsis?
Focus on the protagonist's journey and mention secondary POV characters only where they directly affect the main plot. Trying to cover every POV character's arc will make the synopsis too long and too complicated. If two characters share equal importance, focus on the one whose arc drives the climax.
What is the difference between a synopsis and an outline?
An outline is a planning document that maps what will happen. A synopsis is a summary of what happens. Outlines can be detailed and tentative, with notes to yourself about things to figure out later. Synopses should be polished and definitive, presenting the story as a finished work.
Should the synopsis match my writing style?
No. The synopsis should be clear and functional. Your writing style shows in the manuscript, not in the synopsis. Agents evaluate voice from sample pages. They evaluate structure from the synopsis. Keep the two tasks separate.
How many characters should appear in a synopsis?
As few as possible. Name only the characters who are essential to the main plot. Minor characters can be identified by role ("her colleague," "the detective") rather than by name. Three to five named characters are typical. More than that makes the synopsis hard to follow.