Sophie Hannah is the internationally bestselling author of 9 psychological thrillers, which have been published in more than 20 countries and adapted for television. Her novel The Carrier won the 2013 Specsavers National Book Awards Crime Thriller of the Year. Sophie is an Honorary Fellow of Lucy Cavendish College, Cambridge, and as a poet has been shortlisted for the TS Eliot Prize.

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.