The question: what is the best ‘twist’ you have encountered in AIF? Did it add a lot to the story? If an author chooses to use a twist in the plot, what steps can they take to make sure it succeeds (not saying it is essential, because it isn’t)?
To define twist via Wikipedia: “A plot twist is a radical change in the expected direction or outcome of the plot. It is a common practice in narration used to keep the interest of an audience, usually surprising them with a revelation.”