D.O.A.

Frank Bigelow walks into a police station and says he wants to report a murder: his own. The film then rewinds to show how he got there. Frank, a small-town accountant, is in San Francisco for a few days and is slipped a luminous poison in a drink at a bar. A doctor tells him he has only days to live and no cure exists, and Frank spends his remaining hours trying to find out who killed him and why. The premise, a man investigating his own murder, is one of the tightest hooks in film noir. Rudolph Maté had been a cinematographer before he directed, and the film has a clean, hard look. The story ties Frank's death to a routine bill of sale he notarized, a small thing with large consequences. The film entered the public domain due to non-renewal of its copyright.