"The only clue to what is in people's minds is in their behavior. If a man behaves strangely, oddly, is not himself--Then you suspect him?No. That is just what I mean. A man whose mind is evil and whose intentions are evil is conscious of that fact and he knows that he must conceal it all costs. He dare not, therefore, afford any unusual behavior."
Agatha Christie was an English writer known for detective fiction and stage plays. She created the fictional detectives Hercule Poirot and Miss Marple. Her works are among the most widely translated and bestselling in literary history.