on Fiction University:

Your narrator has a bigger impact on the novel than you think.

Every story has a narrator–some narrators are the protagonist, others tell the tale as a group, and some lurk in the shadows or hover above the story like an all-seeing-eye. Sometimes we’re in someone’s head like an imaginary friend, other times we’re a fly on the wall. Whichever point-of-view style a writer chooses, it’s pointing at someone.

In grand terms, that someone is the reader, but it can be more subtle than that. Some novels break the fourth wall and address the reader directly, while others have their characters exist in a world that feels as if we’re watching it on closed-circuit TV.