3 Days of the Condor (movie classics)

Three 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 based on the 1974 novel Six Days of the Condor by James Grady.
Set mainly in New York City and Washington, D.C., the film is about a bookish CIA researcher who comes back from lunch one day to discover his co-workers murdered, and tries to outwit those responsible. 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.

https://en.wikipedia.org/wiki/Three_Days_of_the_Condor