Queen of crime, Agatha Christie wanted to kill Poirot, but gave up for money

Biography reveals this and other intimacies of the writer, whose sells are only behind the Bible and Shakespeare

The three most published literary works in the history of mankind are, in order, the Bible, William Shakespeare's set of plays and the 80 books written by Agatha Christie.

Her 66 novels and 14 compilations of tales of mysterious crimes, launched between 1920 and 1975, surpass 4 billion copies sold.

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