This element of surprise or mystery — the detective element as it is sometimes rather emptily called — is of great importance in a plot. It occurs through a suspension of the time-sequence; a mystery is a pocket in time, and it occurs crudely, as in "Why did the queen die?" and more subtly in half-explained gestures and words, the true meaning of which only dawns pages ahead. Mystery is essential to a plot, and cannot be appreciated without intelligence.
E. M. ForsterThe king died and then the queen died is a story. The king died, and then queen died of grief is a plot.
E. M. ForsterThe tragedy of preparedness has scarcely been handled, save by the Greeks. Life is indeed dangerous, but not in the way morality would have us believe. It is indeed unmanageable, but the essence of it is not a battle. It is unmanageable because it is a romance, and its essence is romantic beauty.
E. M. Forster