Which novel by Agatha Christie is the best-selling mystery novel of all time?

Which novel by Agatha Christie is the best-selling mystery novel of all time? And Then There Were None holds that distinction.

Christie’s novel was first published in Britain in 1939 and follows ten strangers invited to an isolated island, where they are confronted with accusations and a series of deaths. Its tightly controlled structure and steadily shrinking cast made it one of the most influential closed-circle mysteries ever written.

The book has sold more than 100 million copies, making it Christie’s best-selling novel and one of the best-selling books of any kind. It was originally published in Britain under a different title, derived from a minstrel song; later English-language editions adopted the current title. The change reflected efforts to remove a racist term from the book’s title and related nursery-rhyme references.

Readers sometimes confuse it with Murder on the Orient Express, another famous Christie mystery. That novel features Hercule Poirot, while And Then There Were None is an ensemble mystery with no recurring detective solving the case.