Agatha Christie up to the last chapter, then decided who the most unlikely suspect was, after which she would go back and make the necessary changes to "frame" that person. However, John Curran's "Agatha Christie: The Secret Notebooks" describes different working methods for every book in Christie's bibliography, contradicting the claim by Aldiss. Christie's mature novels, from 1940 onwards, often have titles drawn from literature. Four are from Shakespeare: Three are from the Bible: Another six are from other works of literature: In such cases, the original context of the title is usually printed as an epigraph. Similarly, the title of Christie's
Agatha Christie the house; the English were of all kinds". Christie published relatively few non-fiction works: Often referred to as the "Queen of Crime" or "Queen of Mystery", Agatha Christie is the world's best-selling mystery writer and is considered a master of suspense, plotting, and characterisation. Some critics, however, have regarded Christie's plotting as superior to her skill with other literary elements. Novelist Raymond Chandler criticised her in his essay "The Simple Art of Murder", and American literary critic Edmund Wilson was dismissive of Christie and the detective fiction genre generally in his "New Yorker" essay, "Who Cares Who Killed Roger Ackroyd?"