"Анна Каренина" is a novel written by Лев Толстой, first published in 1877. The story revolves around Анна Каренина, a married woman who falls in love with Алексей Вронский, a dashing officer. Their passionate affair leads to societal scandal and personal tragedy, exploring themes of love, fidelity, and the constraints of society. The novel is set in 19th-century Russia and contrasts the lives of various characters, including Константин Левин, who represents the search for meaning and happiness. Through rich character development and intricate plots, Tolstoy examines the complexities of human relationships and moral dilemmas.