A synopsis is a concise summary of your entire book’s plot, written in third person and present tense, that tells an agent or editor what happens from beginning to end. Most agents expect a synopsis between 500 and 1,000 words, roughly one to two pages single-spaced. Unlike a back-cover blurb designed to tease readers, a synopsis lays everything out, including the ending.
What a Synopsis Actually Does
When you query a literary agent, the synopsis serves a different purpose than your sample chapters. Your chapters prove you can write. Your synopsis proves you can tell a complete, compelling story. Agents use it to evaluate whether your plot holds together, whether the stakes escalate, and whether the ending delivers. They’re checking the architecture of your book, not savoring your prose.
This means the synopsis needs to do something that feels unnatural: compress a 80,000-word novel into a page or two that still conveys emotional weight. You’re not summarizing every chapter. You’re tracing the spine of your story, hitting only the moments that change the direction of the plot.
Start With Your Protagonist
Open the synopsis by introducing your main character: who they are, what they want, and what their life looks like before everything changes. You don’t need physical descriptions or backstory. You need the reader to understand what’s at stake emotionally. A sentence or two establishing the character’s mindset and motivation sets the foundation for everything that follows.
Then move immediately to the inciting incident, the event that disrupts your protagonist’s world and sets the story in motion. This should appear in your first paragraph. If you spend half a page on setup before anything happens, the synopsis will feel slow in the same way a novel with a sluggish opening does.
Hit the Major Turning Points
After the inciting incident, your synopsis should track the key plot beats that escalate the conflict. Think of these as the moments where your protagonist’s situation meaningfully changes: a new obstacle, a betrayal, a revelation, a choice that can’t be undone. Most novels have four to six of these turning points, and your synopsis should include all of them in sequence.
If you write in a specific genre, think about the structural beats your genre demands. A romance synopsis needs to show how the central relationship develops and what keeps the couple apart. A mystery needs to lay out the major clues and misdirections. A thriller needs to show escalating danger. Agents read within their genres and will notice if the expected milestones are missing.
For each turning point, briefly explain what happens and why it matters to the protagonist. The “why it matters” part is what separates a synopsis that reads like a flat sequence of events from one that conveys the emotional engine of your story. You don’t need to replicate the novel’s interiority, but a phrase like “realizing she’s been protecting the wrong person” does more work than simply listing what occurs.
Include the Ending
Do not withhold your ending. This is the single most common mistake writers make with synopses, and it comes from confusing a synopsis with marketing copy. You’re not trying to hook a casual reader. You’re showing a publishing professional that your story resolves in a satisfying way. A weak ending can ruin an otherwise strong manuscript, and agents want to know upfront whether yours lands. If you leave it out, many will assume you’re hiding a problem.
Your final paragraph should show how the central conflict is resolved and how your protagonist has changed, both in their external circumstances and their internal understanding. The reader should finish the synopsis feeling that the story is complete.
Keep the Cast Small
Only name the characters who are essential to the main plot. For most novels, that means the protagonist, the antagonist or primary source of conflict, and perhaps one or two other characters whose actions directly drive major turning points. Everyone else can be described by their role: “her sister,” “his commanding officer,” “the detective assigned to the case.”
Dropping in a dozen character names turns a synopsis into a roster that’s impossible to follow. Every name you introduce is a piece of information the reader has to track. If a character doesn’t appear in at least two of your major plot beats, they probably don’t belong in the synopsis at all.
Write in Third Person, Present Tense
Even if your novel is written in first person or past tense, write the synopsis in third person, present tense. “Elena discovers the letters hidden in her mother’s desk” rather than “I discovered the letters” or “Elena discovered the letters.” This is the standard convention, and it gives the synopsis an immediacy that keeps it from reading like a book report.
The one exception is if an agent’s submission guidelines specifically request something different. Always follow the individual agent’s instructions over any general advice.
Get the Tone Right
A synopsis shouldn’t read like a dry business document. Try to let some of your novel’s voice come through in your word choices and phrasing. If your book is darkly funny, a hint of that humor in the synopsis signals that tone is baked into the story, not just sprinkled on top. If your book is lyrical and atmospheric, a few well-chosen descriptive phrases can convey that without turning the synopsis into purple prose.
The balance is tricky. You want enough personality that an agent gets a feel for the reading experience, but not so much stylistic flourish that the plot gets buried. Clarity always wins over cleverness in a synopsis. When in doubt, prioritize clean, direct sentences that move the story forward.
Formatting and Length
Aim for 500 to 1,000 words. Many agents and contests suggest keeping it closer to 500 if you can manage it. Some request a specific length, one page or two pages, in their submission guidelines. When no length is specified, one single-spaced page (or two double-spaced pages) is the safe default.
Use the same standard manuscript font you’d use for your query letter. Don’t add headers, footers, or page numbers unless the submission guidelines ask for them. Skip chapter-by-chapter breakdowns entirely. The synopsis is a narrative document, not an outline.
A Practical Approach to Drafting
If staring at a blank page feels paralyzing, start by listing the eight to ten most important scenes in your novel, the ones where the plot actually turns. Write one sentence for each. Then expand each sentence into a short paragraph that includes the emotional stakes. Finally, smooth the transitions so the synopsis reads as continuous prose rather than a list of bullet points.
Once you have a draft, read it aloud. Listen for places where the story feels like it jumps without explanation, or where you’ve included a scene that doesn’t connect to the main arc. Cut anything that’s there because it happens in the book but doesn’t serve the synopsis. The test for every sentence is simple: does this help someone who hasn’t read the book understand the plot and care about the outcome? If the answer is no, it goes.
Consider asking someone who hasn’t read your manuscript to read the synopsis and tell you what they think happens. If they’re confused about the protagonist’s motivation, or can’t explain why the climax matters, those are the spots to revise. A synopsis that makes sense only to someone who already knows the story isn’t doing its job.