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 which she describes them. One such site featured in her work is the temple site of Abu Simbel, depicted in "Death on the Nile". Also there is the great detail in which she describes life at the dig site in "Murder in Mesopotamia". Among the characters in her books, Christie has often given prominence to the archaeologists and experts in Middle Eastern cultures and artefacts. Most notable are the characters of Dr. Eric Leidner in "Murder in Mesopotamia" and Signor Richetti in "Death on the Nile", while many minor characters were archaeologists in "They Came to Baghdad". Some of Christie's