"Author! Author!" is a fantasy short story written by Isaac Asimov.
It was written in 1943, born of the author's desire to make the pages of Unknown with a fantasy. It was sold to the magazine, but never published as the magazine was withdrawn because of a wartime paper shortage. It surfaced some twenty years later and was included in an anthology of stories that had appeared in that magazine - despite not having actually been published. It was also included in the 1972 collection The Early Asimov.
The story concerns Graham Dorn, a successful mystery writer, who finds to his dismay that his most famous literary creation, a suave detective named Reginald de Meister, has become real. He usurps Dorn's life and even attempts to steal his fiancee. When De Meister's literary lady friend, the flashing-eyed svelte Sancha Rodriquez, also appears and accuses him of two-timing her, De Meister disappears. Graham's life becomes his own again.