Sophie Hannah - A Kingfisher Hill-i gyilkosságok

Hercule Poirot receives a letter from Richard Devonport, who lives in a luxurious villa on Kingfisher Hill. The young man asks the master detective to save his doomed fiancee, who has confessed to killing Richard's brother Frank. Poirot has to face several mysteries: an unknown young lady confesses to him a murder, and another woman with a disturbed behavior claims that her life is in danger. This time too, with Inspector Catchpool at his side, the detective tries to answer the ever-increasing questions.
Who killed Frank? And why did he have to die? Who could the unknown young lady have killed? What is the role of the novel The Midnight Meeting in the criminal case?
To solve the mysteries, Poirot has to work his little gray brain cells...