Oliver Onions (1873-1961) was an English novelist and short story writer. Born in Yorkshire, Onions studied at London's National Arts Training Schools for three years before working as a commercial artist, designing posters and illustrating books and magazines. In 1900, encouraged by poet and literary critic Gelett Burgess, Onions published his first novel. He married Berta Ruck, a popular romance writer, in 1909, and soon had two sons. Throughout his career, he wrote dozens of stories and novels, mainly in the genres of horror, fantasy, and science fiction. Widdershins (1911), a collection of ghost stories, is perhaps his best-known work, and continues to be regarded as a masterpiece of supernatural terror. Although less popular, his Whom God Hath Sundered trilogy has been recognized as an underappreciated classic of twentieth century literature.

Most crime novels seek to reveal through cunning and careful arrangement the identity of the killer. A slow-burning mystery clouds all else, and motive is a matter of secondary importance. In this trilogy, tradition is reversed, laying bare the torturous road one murderer takes to complete his terrible crime. Whom God Hath Sundered is a trilogy of novels by Oliver Onions.