Arthur Koestler was a Hungarian-born author and journalist. Koestler was born in Budapest and, apart from his early school years, was educated in Austria. In 1931, Koestler joined the Communist Party of Germany, but he resigned in 1938 after becoming disillusioned with Stalinism.

Darkness at Noon is a novel by Hungarian-born novelist Arthur Koestler, first published in 1940. His best known work, it is the tale of Rubashov, an Old Bolshevik who is arrested, imprisoned, and tried for treason against the government that he helped to create.