C. Daly King (1895-1963) was an American psychologist and detective story writer. He was born in New York City and educated at Yale University. After fighting in World War I, he worked in textiles and in advertising before returning to school to study psychology, with a particular focus on sleep and consciousness. In the 1930s, King published nine books that quickly established him as a master of the Golden Age mystery, but ceased writing fiction with the advent of World War II.
