The book traces the origin and development of crime fiction. There is an attempt at the definition of crime mystery detective fiction. The works as well as achievements and awards of Agatha Christie, and the contemporary writers of Agatha Christie are listed. It focuses on the analysis of the characters. The positive and negative qualities of each and every character are discussed. Freud's psychological approach is explained in a lucid manner as related to the novel. The inducement and factors responsible for committing crime is focused upon. The behavioral changes that occur in the characters because of psychological impacts, is dealt with in an exhaustive style. It summarizes the findings of the earlier chapters. It deals with the styles and techniques that are adopted by Agatha Christie. The setting of the novel and also the comments of the critics are described. Freud's theory and its application in the novel are restated. The approaches and the themes that were handled by Agatha Christie are explained.