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 continues apace. Mathew Prichard in his own right holds the copyright to some of his grandmother's later literary works (including "The Mousetrap"). In 1998, Booker sold a number of its non-food assets to focus on its core business. As part of that, its shares in Agatha Christie Limited (at the time earning £2.1m annual revenue) were sold for £10m to Chorion, a major international media company whose portfolio of well-known authors' works also included the literary estates of Enid Blyton and Dennis Wheatley. In February 2012, some years after a management buyout, Chorion found itself in financial difficulties, and began