La Main Gauche (1889)

Set in Rouen, this novel explores the psychological turmoil of Count Hervé de Kerloquen, who becomes obsessed with his wife's left hand, viewing it as ugly and sinister. His growing paranoia and jealousy strain their marriage, while a young artist, Olivier Bertin, complicates matters by falling in love with the Countess. This intricate tale delves into themes of human relationships and jealousy, showcasing Maupassant's keen insight into the darker aspects of love and obsession.