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 "Agatha" (1979) (with Vanessa Redgrave, in which she sneaks away to plan revenge against her husband), and the "Doctor Who" episode "The Unicorn and the Wasp" (17 May 2008), with Fenella Woolgar, in which her disappearance is the result of her suffering a temporary breakdown owing to a brief psychic link being formed between her and an alien wasp called the Vespiform. Others, such as Hungarian film, "Kojak Budapesten" (1980; not to be confused with the 1986 comedy by the same name) create their own scenarios involving Christie's criminal skill. In the TV play, "Murder by the Book" (1986), Christie