Researchers use deduction to unlock Christie mysteries

To honour the 125th birthday of Agatha Christie, British researchers have used their powers of deduction to spot 'whodunnit' . Where the novel is set, the primary means of transport used in the book, and how the victim meets their messy end are all vital clues to unmask the killer in the mystery maven's much-loved novels. Dr James Bernthal from the University of Exeter was one of the panel of experts working on the formula and organises international Agatha Christie conferences.