And Then There Were None is the name of Agatha Christie's most famous mystery novel first published in 1939. And Then There Were None tells the story of eight people who were invited to an isolated island off the coast of Devon by a couple named Ulick Norman Owen and Una Nancy Owen. In each of the guests' bedroom, a framed copy of a poem was hung. The guests then realize that none of them knew the Owens, one of them suggesting that the names "U.N. Owen" was a play on words for "Unknown". Then night after night, the guests started dying one by one.[1][2]
