What is one interesting fact about Agatha Christie's then there were none?

Answer 1

That it is a "perfect" detective novel, one where it is almost impossible to guess the identity of the killer as one by one they die on a desert island while being completely cut off from the mainland. In the letter included at the end of the novel, the criminal claims there were 2 very obvious clues that should have pointed the reader to the right direction, but I consider them quite irrelevant (which means she was not completely fairplay!).

Answer 2

One interesting fact about Agatha Christie's "And Then There Were None" is that it is one of the best-selling books of all time, with over 100 million copies sold worldwide.