How to Write a Synopsis for Your Novel (2026 Guide with Structure)

What is a synopsis and why do you need one?

A synopsis tells the whole story of your novel from beginning to end, so an agent or editor can judge whether the plot works: whether it has a sound structure, real stakes, a coherent cause-and-effect chain and a satisfying ending. Unlike a blurb, it gives away every twist and the ending. It is a professional document, not a piece of sales copy.

Agents and publishers usually request a synopsis together with a query letter and the first few chapters. The sample chapters show your voice; the synopsis shows that you can plot and finish. Some agents read the synopsis only after they have liked the pages, so it often works as a final check rather than a first hook.

Self-published authors rarely need a synopsis for readers, but writing one is still one of the best tests of a manuscript. If you cannot explain why each major event happens, or the ending feels arbitrary when summarised, readers will probably feel the same weakness in the full book. A synopsis is also useful for editors you hire, for translators, and for your own series planning.

How long should a synopsis be?

The most common request is one to two pages, often somewhere between 500 and 1,000 words. Requirements vary a great deal between agents and publishers: some want a single page, some ask for a short paragraph, and a few accept longer. Always check each submission guideline and follow it exactly, because ignoring the stated length is an easy reason to be turned down.

It helps to keep three versions ready: a one-paragraph version of roughly 100 to 150 words, a one-page version, and a fuller two-page version. Write the long one first, then cut. Each shorter version is not a trimmed copy but a rewrite that keeps only the spine of the story.

If no length is given, aim for one page single-spaced or two pages double-spaced. Shorter is harder to write but easier to read, and a tight synopsis suggests a writer who controls their material. Formatting norms differ by country and agency, so use a clean, standard manuscript font and follow any stated layout.

How do you structure a synopsis step by step?

Write in the third person and present tense, whatever person and tense the novel uses. Open by introducing your main character, their situation and what they want, then follow the main plot in order. Aim for cause and effect: each event should clearly lead to the next, using links such as “because”, “so” and “which forces”.

• Opening: the protagonist, their world, their want and the inciting incident that disrupts it.
• First turning point: the decision or event that commits them to the main conflict.
• Middle: the key complications, rising stakes and how the character responds, including any midpoint reversal.
• Crisis: the darkest moment, where the goal looks lost, and the choice it forces.
• Climax and ending: what the character does, how the conflict is resolved, and how they have changed.

A practical method is to start from your outline. Write one sentence for each major beat, join them into paragraphs, then trim. If you have no outline, list the ten to fifteen events without which the story would not make sense and work from those. Roughly a quarter of the space for the opening, half for the middle and a quarter for the crisis and ending is a sensible balance, though the ending must never be squeezed into a vague final line.

What does a before-and-after synopsis look like?

Here is a weak passage from an imaginary mystery: “Mara moves to a coastal town after her grandmother dies. She meets several locals and starts to find out secrets about her family. There are many twists, and in the end she learns the truth and decides what to do with her life.” It has a name and a setting, but no cause and effect, no antagonist, and no actual ending.

Now a rebuilt version of the same material: “Mara Quinn inherits her late grandmother’s cottage and plans to sell it quickly. When the long-dead lighthouse lights up, she traces it to a shipwreck the town has hidden for thirty years. Because the harbourmaster, Tom Reyes, faces ruin if it comes out, he pressures her to leave, and when she refuses, he destroys the one record that proves her grandmother’s innocence. Forced to choose between safety and the truth, Mara publishes the logbook she copied earlier. Reyes is exposed, her grandmother is cleared, and Mara keeps the cottage and the town that tried to push her out.”

Notice the changes. The want is clear, the antagonist has a motive, events are linked by consequence, and the ending states exactly what happens. Emotional shifts are shown through choices rather than announced, and invented detail is limited to the names that matter.

What should you include and leave out?

Include the main character, the central conflict, the major turning points, the main antagonist or obstacle, the stakes, and the ending. Mention only the characters essential to the main plot, usually three to five, and introduce each one briefly when they first appear. Give the reader a sense of the book’s tone and genre through your word choice, so a thriller feels tense and a romance feels warm.

Leave out minor subplots, secondary characters, detailed world-building, backstory and scene-by-scene description. In fantasy and science fiction, explain only the rules the plot depends on. For a romance, keep the central relationship arc clear: how they meet, what keeps them apart, the black moment and the resolution. For a series, summarise this book only and note, in your query letter rather than the synopsis, any sequel potential.

Do not include praise for the book, comparisons to bestsellers or your own analysis of themes. Those belong in the query letter, where comp titles and a short pitch are expected. A logline or elevator pitch can help you find the core of the story before you write the longer summary.

What are the most common synopsis mistakes?

The most common mistake is hiding the ending to create suspense. Agents want to know how the story ends; a synopsis without an ending looks like a writer who has not solved the plot. Another is a list of events with no emotion or motive, which makes even an exciting story read flatly. Show why the character acts, not only what they do.

• Writing it like a blurb, with rhetorical questions and teasers.
• Naming too many characters and places, so the reader loses track.
• Including every subplot and minor scene.
• Switching tense or slipping into the first person.
• Using vague phrases such as “she goes on a journey of self-discovery”.
• Ignoring the agent’s stated length and format.

Finally, proofread carefully and ask a reader who has not read the book to summarise it back to you. If they cannot tell what the protagonist wants or how the book ends, revise. If you use an AI tool for a first draft, check every plot point against your actual manuscript, because summaries can invent events. CruxOne, an AI book publishing platform for indie authors used in a web browser, offers AI writing and editing tools for this kind of drafting, but the final wording should be yours.

Frequently asked questions

Should a synopsis reveal the ending?

Yes. Unlike a blurb, a synopsis always includes the ending. Agents need to see the whole plot, including how it resolves.

How long is a novel synopsis?

Usually one to two pages, around 500 to 1,000 words, unless an agent asks for a specific length. Always follow the submission guidelines.

What tense should a synopsis be in?

Present tense and third person, regardless of how the novel itself is written.

What is the difference between a synopsis and a blurb?

A blurb sells the book to readers and hides the ending. A synopsis summarises the whole plot, including the ending, for agents and editors.

How many characters should a synopsis mention?

Only those essential to the main plot, usually three to five. Cut or merge the rest.