Trivia

Eli Wallach (Ben Harris) and Anne Jackson (Gloria Fiske) were husband and wife in real-life. This is their first film collaboration. They formed Elan Productions to produce this film with financing from Columbia Pictures.

Dustin Hoffman was paid two hundred dollars for one day's work on this, his first feature film.

The movie is based on a one-act, two-character, off-Broadway play that originated as "The Tiger".

Film debut of Swoosie Kurtz. As Ben is scoping potential victims, Kurtz appears in a single shot, wearing a butterscotch-colored turtleneck.

John P. Ryan's film debut.