D.O.A. (1950) is a classic film noir thriller. It combines elements of mystery, crime, and suspense, featuring the hallmarks of film noir: a dark, moody atmosphere, moral ambiguity, and a sense of existential dread as the protagonist confronts his own mortality. The film’s “manhunt-in-reverse” plot, with Frank Bigelow racing against time to solve his own impending murder, adds a unique twist to the traditional thriller genre.