Beyond a Reasonable Doubt is a 1956 film noir directed by Fritz Lang and written by Douglas Morrow. The film stars Dana Andrews, Joan Fontaine, Sidney Blackmer, and Arthur Franz, and was the last American film directed by Lang. Austin Spencer (Sidney Blackmer), a newspaper publisher, wants to prove a point about the inadequacy of circumstantial evidence. He talks his son-in-law, Tom Garrett (Dana Andrews), into participating in a hoax, in an attempt to expose the ineptitude of the city's hard-line district attorney. The plan is for Tom to plant clues which will lead to his arrest for the murder of a female nightclub dancer, Patty Gray. Once Tom is found guilty, Spencer is to reveal the setup and humiliate the District Attorney.