Maupassant is considered one of the fathers of the modern short story. He delighted in clever plotting, and served as a model for Somerset Maugham and O. Henry in this respect. One of his famous short stories, "The Necklace", was imitated with a twist by both Maugham ("Mr Know-All", "A String of Beads") and Henry James ("Paste").
Taking his cue from Balzac, Maupassant wrote comfortably in both the high-Realist and fantastic modes; stories and novels such as "L'Héritage" and Bel-Ami aim to recreate Third Republic France in a realistic way, whereas many of the short stories (notably "Le Horla" and "Qui sait?") describe apparently supernatural phenomena.
The supernatural in Maupassant, however, is often implicitly a symptom of the protagonists' troubled minds; Maupassant was fascinated by the burgeoning discipline of psychiatry, and attended the public lectures of Jean-Martin Charcot between 1885 and 1886.