The document provides analysis of the mise-en-scene, sound, camera shots, and editing techniques used in the first three minutes of the film 39 Steps. It summarizes that the black and white filming establishes the early 20th century setting. Upbeat non-diegetic music and lighting create an atmosphere of excitement for a glamorous theater occasion. Shadows and shots of a mysterious man in a trench coat create intrigue about the unfolding mystery genre narrative. Formal staging of two suited men on stage signals the start of a comedy performance to a sophisticated, upper-class audience. Linear editing moves the story along without disorienting the viewer as they are introduced to this world.