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And Then There Were None, Agatha Christie
Estimated number of copies sold: 100 million
The plot of And Then There Were None starts when 10 different strangers arrive on a private island off the coast of Devon. They find one big mansion. However, the new guest can not find the host anywhere. In addition, inside the house, they find a “weird” piece of art which contains 10 different little sculptures. When the guests start to interact with each other, they soon realize that everyone has a dark past that none of them is willing to reveal.