What Is a Prologue in a Book and How Long is Prologue? 

Mairead Beeson
June 24, 2021

What is a prologue in book?

A prologue is a supplemental written piece (shorter than a chapter), at the beginning of a book that gives us a blink into the new world we are about to enter. It doesn’t have to be in sync with the timeline and should generate curiosity and elicit engagement. (What is a prologue in a book?)

what is a prologue in a book

What is a prologue in a book and do I need a prologue?

When considering a prologue for your book, there are two types of scenarios to take into account:


‘I don't care who you are, where you’re from, what you did, as long as you love me.’

- Backstreet Boys

In this example, an inexperienced, shallow, and perverted person couldn’t agree more. They wouldn’t care where she was from or what she did. She could be a fugitive running from the law, a murder suspect, or an escapee from a mental hospital. They couldn’t care less! As long as she loved them (even just for the night).

Sometimes you don’t need to know much about this girl because you only care about being with her. You don’t need a prologue from her. 

But later in life, when rejection and disappointment have already left their mark in your perception of love, you’re more likely to gravitate toward: 


“Fascinating creature, talk to me
Tell me all about yourself.
Be sure to cover every feature thoroughly
Tell me all about yourself”

- Nat King Cole

Now, if that same girl showed up, it would be a different story. You would care where she was from, and what she was doing here? You would care what she did too. The more you could know about what makes her who she is, the better! Because you crave a deeper connection and understanding.

What this means is that the depth of your story, and/or the emotional needs of your reader dictate the need for a prologue.

Let’s take some time and figure out when you need a prologue and when you don’t.

Does a book need a prologue? 

This is a hot topic amongst writers and the question is bound to elicit debate. 

Does a book need a prologue

The main purpose of a novel's prologue is that a prologue should not be an information dump. Maybe you had lots of information that you wanted to share with the reader, but you couldn’t figure out where to put it, so you threw it in the prologue.

Let’s compare this information with manure. Manure is essential for your garden and when it is worked into your soil properly, you won’t even notice it. You would only see the plants grow beautifully. Now, take this same amount of manure and dump it on your porch. Do you notice the difference?

The belief that an agent won’t even read your book if they see a prologue is false. But they would most definitely put your book down if it is a bad prologue.

And do people actually read them? According to a poll carried out by EpicReads, out of 208 readers, 84% of them will always read a prologue. This means you can be rest assured that the vast majority of reader will read it.

84% of readers will ALWAYS read your prologue

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Sometimes, the decision to add a prologue might only arise at a later stage of the writing process. Perhaps during the revision stage, you realize that something is missing, and you need something extra to create additional magic and excitement. A well-written prologue could be just the thing you are looking for because, unlike conventional chapters, a prologue doesn’t have to fit into the timeline.

When done properly, the effective prologue could provide a beautiful foundation for your story, share vital information with the reader, and elicit curiosity and engagement.

What is the difference between an introduction and a prologue? 

Although they both exist at the beginning of the novel, and they both provide supplementary information, there are noticeable differences.

A prologue is mostly written from the perspective of one of the characters and gives the reader a window into this new world and helps to for what is to come. For instance, if your main character exhibited self-sabotaging tendencies when it came to love, an appropriate prologue could be a scene where she, as a child, saw her dad argue and walk out of the house. It is usually a little removed from the main story.

A good prologue serves as supplementary information that gives depth to the story but also creates curiosity and could serve as a hook. It doesn’t need to take a position on the timeline before the first chapter. It could also be a blink into the future.

An introduction sets the stage for the reader and also serves as an informative bridge to chapter one and the opening scene. It provides information about the characters and their world and creates interest in the new world. It is often used as a hook and then it smoothly transitions into chapter one.

Most of the time, if there is a prologue, there is an epilogue too. But this is not the case with an introduction. We will talk more about this later.

How long is a prologue in a book? 

On average, a chapter in a non-fiction book ranges from 1500 to 5000 words. Of course, this may vary depending on the book but that is the average count that we will focus on for now.

The average length of a prologue is between 1500 to 2500 words long. As you can see, it is a little shorter than an actual chapter. And that is the golden rule of a healthy prologue length.

how long is a prologue in a book

The unwritten “successful prologue” rule suggests that if your prologue is longer than your chapters, then maybe you should rather spread the information into other chapters. It’s usually a sign that your prologue is becoming an info dump; exactly what you are trying to avoid.

Also, remember that your prologue contributes to the pace or tempo of your story. If you create a long prologue, you are delaying the timeline to the inciting incident, and it might contribute to readers losing interest.

Want more personalized help with your book? We've helped dozens of writers just like you write a book they can be proud of (prologue, epilogue, and everything in between). Check out our 1:1 writing coaching program.

Does a prologue count as a chapter?

As stated before, a book's prologue should be supplementary to your book; background detail. It should not just assume the normal flow and blend in with chapter one. If you want to do that, rather create an introduction, or make it your first chapter instead.

A prologue is purely there to give us a quick view of the new world we are about to enter, and its primary goal is to generate interest.

A prologue should never serve as a supplement to a boring first chapter. Rather work on your first chapter and do something different instead of using a prologue as a ‘pre-chapter’ to add color to an otherwise dull story entry.

Also, as stated in the previous section, the prologue should be shorter than your chapters.

What should a prologue contain?

You need to remember that a prologue should be crucial to the plot and that it should contribute to world-building without sounding like a Wikipedia entry. Use the prologue to show a piece of this world through the point of view of another and make it active, like a scene from a movie.

It is the ideal opportunity to use a different point of view to illustrate the environment or characters. It is the only part of the book where the readers can’t question the sanity of the writer. A prologue could be out of the normal sequence of events and from a different point of view and it would be acceptable. If you do that in a normal chapter, it might appear to be nonsensical.

A prologue is your empty canvas, and you can use it to your advantage to elicit excitement, suspense, or hook to keep the reader intrigued.

What's the difference between an epilogue and a prologue?

An epilogue is like a prologue, but it is at the end of the book. It takes place outside the standard-setting or perspective of the story and is set after the story’s conclusion. 

Remember Harry Potter sending his kids off to Hogwarts at the end of the last movie? That was a perfect example of an epilogue.

An epilogue shouldn’t serve as a story’s conclusion, but it provides a little more insight into the ending. It is a little treat to satiate any lingering curiosity we might have at the end.

Conclusion / Recap

What is a prologue in a book?

A prologue is a supplemental written piece that can be in a complete different voice and perspective than the rest of your book. It can be used to set up your story or character trajectory. It doesn’t have to make sense, and it’s primarily one big hook.

As a rule, you can use one, or not. It’s up to you. If you feel it’s integral to tying up some loose ends, then go for it. Otherwise, if you think your reader can logically make connections without having any background (or if you want to save all that juice for the next book in the series), then do without.

Just remember, if you do decide to go for it, then avoid information dumps, so it doesn’t become a dump on your book.

Other useful reminders:

  1. An introduction differs somewhat from a prologue. It is in sequence with chapter one and serves as a bridge into that chapter.
  2. The prologue should be shorter than other chapters and should be crucial to the plot. It doesn’t have to be in sync with the timeline and it could be from a totally different point of view.
  3. If there is a prologue, there is usually an epilogue too. An epilogue is a section at the end of the book and supplements the ending or conclusion of the book. It is only additional information and should not serve as the actual conclusion.

Are you for or against prologues? When you read a book, do you read prologues, introductions, prefaces, etc.? Share your thoughts with us down in the comment section below.

If you're struggling to find the time to write your book, check out our writing coach plans here.

About the author 

Mairead Beeson

Mairead is an award-winning editor whose passion for writing started at a young age. And it was cemented when she received a personal response letter from her favorite author Darren Shan after writing to him. Although her passions have now multiplied to include various “very British” leisure pursuits (football, awful 80s slasher movies, Indian food, cycling, comedy, etc.), she still can’t resist making time for a good book…or three.

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