Crooked House by Agatha Christie in Paperback

 

In Crooked House by Agatha Christie, a wealthy Greek businessman is found dead in his London home. The Leonides family, who lived together in a sprawling, ramshackle mansion, had always been happy - until the patriarch, Aristide, was killed by a fatal injection of barbiturates. The prime suspect is his young widow, fifty years his junior, but the murderer underestimated the determination of Charles Hayward, who is engaged to the millionaire's granddaughter.