Three Days of the Condor (stylized on the poster art as 3 Days of the Condor) is a 1975 American political thriller film directed by Sydney Pollack and starring Robert Redford, Faye Dunaway, Cliff Robertson, and Max von Sydow. The screenplay by Lorenzo Semple Jr. and David Rayfiel was adapted from the 1974 novel Six Days of the Condor by James Grady. The main point of variance from novel to film lies in the presentation of the CIA. In Grady's book, a rogue element within the Agency is motivated by drug-running greed. In the film, the same individuals act with equal ruthlessness to hide a project intended to protect long-term national interests.
Set mainly in New York City and Washington, D.C., the film is about a bookish CIA researcher who comes back from lunch, discovers all his co-workers murdered, and tries to outwit those responsible until he figures out whom he can really trust. The film was nominated for the Academy Award for Best Film Editing. Semple and Rayfiel received an Edgar Award from the Mystery Writers of America for Best Motion Picture Screenplay.