Guy de Maupassant (misspelled here as 'Guy De Mopasant') is the French author who wrote the famous short story 'The Necklace' (misspelled here as 'Neckles'). The story is about a woman who loses a borrowed necklace and spends years repaying its cost, only to discover it was a fake. O. Henry is known for twist endings like 'The Gift of the Magi', but 'The Necklace' is Maupassant's most famous work.