What is a Prologue?
It won't do much good to talk about prologues if we don't agree on what they are. In fiction, there are three things that make something a prologue: (1) it comes before the first chapter, (2) it is a part of the story (as opposed to an introduction, preface, or forward, which are about the story, but not part of it), and (3) it says "Prologue" at the top.
Simple, right? That's what makes something a prologue instead of, say, "Chapter One," but it doesn't explain what makes a good prologue. That's what this post is about.
When Not to Prologue
A lot of people don't like prologues. Some people skip them entirely (which, to me, is way wacky). That's because a lot of writers use prologues as a band-aid for a bad beginning. Which is to say:
- Don't use a prologue because you need a better beginning. Fix your beginning.
- Don't use a prologue just to suck the reader in. You'll only have to suck them in a second time when the prologue's over.
Like every prologue, this creates two beginnings, but instead of Exciting followed by Flat, the expository prologue starts Flat, with the Exciting beginning buried beneath it. Sci-fi and fantasy are notorious for this. A good genre writer, though, is able to mix telling details into the story so they don't have to put it all up front in one big exposition. So:
- Don't use a prologue to explain the world or backstory or any other kind of telling exposition.
Everybody has had a bad experience with prologues, but I don't think they're all bad. If used wisely, they can be quite effective. For example, sometimes a story is told entirely from one point of view, but you need to clue the reader into some event the protagonist never witnessed (and it needs the impact of being dramatized). In this case:
- Use a prologue to show a point of view that doesn't appear anywhere else, or doesn't appear until the end.
- Use a prologue to create tension that the protagonist is not immediately aware of.
Orson Scott Card's Homecoming saga is about a low-tech society of people whose religious values are challenged by a boy that hears from God. This would be fine except it later turns out that the boy's God is an artificial intelligence orbiting the planet and watching over their society. That's the kind of thing that would make a reader throw the book across the room unless there's a prologue (in this case, from the AI's point of view) to show or hint at the truth of the situation. So:
- Use a prologue to manage the reader's expectations about your story.
The main point of all this is that a prologue isn't an easy way out of anything, least of all out of grabbing the reader's attention - that still needs to be done in Chapter One, whether there's a prologue or not. So how do you know if you need one, or if you're just being lazy? From Nathan Bransford:
- Take out the prologue. If the book makes sense without it, you don't need it.
I have some additional examples in the comments. Feel free to add your own, good or bad (or even to contradict what I just said!).