21st Precinct was a dramatic police procedural radio drama that aired on CBS from 1953-1956, focusing on the day-to-day operations of a New York City police precinct with realistic portrayals of urban crime and police work. In "The Sprinter," Jack Bognor, a burglary suspect, becomes the focus of a police surveillance operation as 21st Precinct detectives tail him, leading them directly to his accomplices and uncovering a larger burglary network through methodical police work and patience.