Crooked House - Agatha Christie

The Leonides were a large, happy family, who lived contentedly in a large house (of many angles and triangular shapes) in some posh suburb of London. But they discover - after the murder of Aristide Leonides - that there is a murderer among them...

The police are watching and investigating, but another crime takes place in front of everyone's eyes, and then a third person almost dies. Are the police caught the right killer?

"It is one of my best novels...

Agatha Christie.