Julian Gustave Symons was a British writer, best known for crime fiction. He also wrote social and military history, biography and on crime and literature, and was a poet.
Symons was born in London. He was a younger brother, and later the biographer, of the writer A. J. A. Symons. After leaving school at 14, he founded the poetry magazine Twentieth Century Verse in 1937, editing it for two years. Rejected as a conscientous objector he was called up to World War II in 1942, serving with the British Army until 1944, when he was discharged due to injury.After a period as an advertising copywriter, he became a full-time writer in 1947.