In a key scene in John Schlesinger’s "Marathon Man", a soccer ball suddenly comes bounding out of the shadows into which a courier disappeared without a trace. A famous reference shot in Fritz Lang’s "M" clues us in to the meaning.
Roy Scheider and Nicole Deslauriers share the scene.
(Audio outtake the "They Shoot Films" Podcast Episode 12: https://www.theyshootfilms.com/marathon-man/)