Agatha Christie's , first published in 1939, is widely considered the world's best-selling mystery novel and a masterpiece of the genre. It is a standalone "locked-room" mystery that famously omits her usual detectives, Hercule Poirot or Miss Marple. Plot Overview
The story follows lured to the isolated Soldier Island off the coast of Devon, England, under various pretexts. Upon arrival, they find their host, a mysterious "Mr. U.N. Owen," is absent. A recorded message soon accuses each guest of having committed a past murder that escaped legal punishment. Agatha Christie: And Then There Were None