A prologue earns its place when it's a genuine scene that couldn't happen naturally within Chapter 1's timeline, point of view, or setting, and when cutting it would leave a real gap; if a prologue is mainly explaining backstory or setting the mood without functioning as an actual scene, it usually doesn't need to exist. Many published prologues fail this test, which is part of why the device has such a mixed reputation among readers, agents, and editors.
This is part of The Parts of a Book: A Complete Front Matter Guide.
A prologue that works functions as a real scene: something happens, a character wants something, there's tension or stakes, the same requirements as any other scene in your book. What makes it a prologue rather than Chapter 1 is usually that it sits outside the main narrative's timeline, point of view, or location in a way that genuinely couldn't be folded into the opening chapter without breaking something.
Common legitimate uses:
The most common failure mode is a prologue that's really disguised backstory or worldbuilding, explaining who a character is, what a world's rules are, or what happened before the story "really" begins, without functioning as a scene with actual tension or stakes. Readers, and increasingly retailers' sample previews, often decide whether to continue within the first few pages, and a slow, expository prologue can lose that window before the actual story has a chance to hook anyone.
Another common issue: a prologue written because the writer wasn't confident the opening chapter alone could hook a reader, essentially trying to borrow tension from a more dramatic moment elsewhere in the story. If your actual Chapter 1 needs a prologue to be interesting, that's often a sign Chapter 1 itself needs more work, not that a prologue is the fix.
Ask honestly: if I cut this prologue entirely and started with Chapter 1, what would the reader actually lose? If the answer is vague, "some mood" or "context," that's a sign the prologue might not be earning its place. If the answer is specific, "the reader wouldn't understand why this later reveal matters" or "they'd miss the one scene establishing this character's motivation, which nothing else in the book covers," that's a stronger case for keeping it.
Prologues that run long relative to the chapters that follow can feel disproportionate, essentially asking readers to invest heavily in a scene before they've even met the actual protagonist or begun the real story. A prologue is generally more effective when it's short and sharply focused, doing one specific job rather than trying to cover a lot of ground.
If you're using a prologue mainly to convey information, consider whether that information could instead be woven into the main narrative gradually, through dialogue, memory, or context clues, rather than front-loaded before the story begins. Readers often tolerate not knowing everything upfront better than writers expect, and withheld information can itself become a source of tension rather than a problem to solve immediately.
This is a case where outside readers are especially valuable, since you already know why the prologue matters, which makes it hard to judge whether it's actually working for someone reading cold. Ask beta readers directly: did the prologue make you want to keep reading, or did you find yourself more engaged once Chapter 1 started? Their honest answer is a much better guide than your own instinct, since you can't experience the story the way a first-time reader does.
Not Sure If Your Prologue Is Earning Its Place?
Beta readers can tell you honestly whether your prologue hooks them or whether the real story starts once Chapter 1 begins.
No. Most novels work fine without one, and a prologue should only be added when it does something Chapter 1 genuinely can't, not as a default choice.
Because many prologues in practice function as disguised backstory or worldbuilding rather than a real scene with genuine stakes, which can slow a book's opening rather than strengthen it.
Generally short and tightly focused on one specific job. A long prologue can feel disproportionate, asking for heavy investment before the reader has even met the protagonist.
Ask what a reader would specifically lose if it were cut. A vague answer suggests it may not be earning its place; a specific, concrete answer is a stronger case for keeping it. Beta reader feedback is also one of the most reliable ways to test this.