The Killings at Kingfisher Hill

This is the fourth in a series of books written by Sophie Hannah in the style of Agatha Christie with the main character being the famous Hercule Poirot. Poirot and Inspector Edward Catchpool (the narrator of the story) travel by bus to Kingfisher Hill, a country estate in Surrey, never suspecting that an unexpected invitation to the home of Richard Devonport will result in the need to solve a series of crimes.

Richard's brother Frank was murdered by his fiancee, Helen, who confessed to the crime and is currently in prison. But did she really commit the murder and if so, why? Complications arise when Richard's sister, Barbara, also confesses to having murdered Frank. 

On the bus trip Poirot and Catchpool meet two other passengers who leave the bus before they reach Kingfisher Hill. Who are these women and how does their behaviour affect the story? Then, who is the mystery woman who is found murdered in the Devonport house and who killed her? Many questions with answers to be uncovered by Poirot.

The pace of the book is slow, especially in the first half, as the plot and its mysteries are gradually revealed and eventually solved.