And Then There Were None is a mystery novel by Agatha Christie detailing a experiment in social justice. It begins as ten strangers are brought to an island from which they cannot leave, and as they are gradually killed one by one, they slowly spiral further into insanity. Science fiction readers will note that this book provided the inspiration for Philip K. Dick’s A Maze of Death, in which fourteen strangers are brought to a deserted planet and killed off one at a time. The title was originally Ten Little Niggers, which was changed to Ten Little Indians for political correctness reasons, and changed again to its present title due to obvious problems with that title.