Agatha Christie is known throughout the world as the Queen of Crime. Her books have sold over a billion copies in English with another billion in over 70 foreign languages. She is the most widely published author of all time and in any language, outsold only by the Bible and Shakespeare. She is the author of 80 crime novels and short story collections, 20 plays, and six novels written under the name of Mary Westmacott.

David Brawn has worked for over 20 years in book publishing. He is the accredited author of four titles in the bestselling Little Instruction Book humour series, the parody A Day in the Life of Humphrey, the Downing Street Cat, and four Lord of the Rings film tie-in books.