[PAR] [TLE] And Then There Were None [SEP] And Then There Were None is a mystery novel by English writer Agatha Christie, widely considered her masterpiece and described by her as the most difficult of her books to write.  It was first published in the United Kingdom by the Collins Crime Club on 6 November 1939, as Ten Little Niggers, after the British blackface song, which serves as a major plot point.  The US edition was not released until December 1939; its American reprints and adaptations were all retitled "And Then There Were None", after the last five words in the nursery rhyme "Ten Little Indians". [PAR] [TLE] The Decagon House Murders [SEP] The Decagon House Murders is a 1987 Japanese mystery novel and was the debut work of author Yukito Ayatsuji.  Borrowing its basic plot structure from Agatha Christie's "And Then There Were None" (Christie's book is directly referenced by some of the characters at several points), it tells the story of a group of seven university students who travel to a deserted island that was the scene of a grisly mass murder six months earlier, where events soon turn ominous.  "The Decagon House Murders" belongs to the honkaku subgenre of mystery fiction.
[PAR] [TLE] And Then There Were None [ SEP ] And Then There Were None is a mystery novel by English writer Agatha Christie , widely considered her masterpiece and described by her as the most difficult of her books to write . It was first published in the United Kingdom by the Collins Crime Club on 6 November 1939 , as Ten Little Niggers , after the British blackface song , which serves as a major plot point . The US edition was not released until December 1939 ; its American reprints and adaptations were all retitled " And Then There Were None " , after the last five words in the nursery rhyme " Ten Little Indians " . [PAR] [TLE] The Decagon House Murders [ SEP ] The Decagon House Murders is a 1987 Japanese mystery novel and was the debut work of author Yukito Ayatsuji . Borrowing its basic plot structure from Agatha Christie 's " And Then There Were None " ( Christie 's book is directly referenced by some of the characters at several points ) , it tells the story of a group of seven university students who travel to a deserted island that was the scene of a grisly mass murder six months earlier , where events soon turn ominous . " The Decagon House Murders " belongs to the honkaku subgenre of mystery fiction .
The Decagon House Murders borrows its basic plot structure from an Agatha Christie novel first published in which year ?
The Decagon House Murders borrows its basic plot structure from an Agatha Christie novel first published in which year ?
1939
1939