“A story sings when there is a plot twist that is emotionally devastating for the characters and completes their journey. It’s what I always aim for. And I think that if the reader feels the same emotions as the characters, the twist works. It’s that emotional impact, which, to me, is paramount.
In her biography of Agatha Christie, Laura Thompson says is a great example of that, and something I think about a lot, actually. Christie is a huge influence on me when I craft a plot.