Dragnet began as an American radio drama in 1949 and moved to television in 1951, with Jack Webb starring as Los Angeles police Sergeant Joe Friday. Its opening narration presented each episode as a true story with changed names, a device that helped define the police procedural genre on screen. The theme and narration were widely parodied in later comedy, and clips of the introduction now circulate online as shorthand for a serious investigation. Creators still use it to give an ordinary moment the weight of an official case.
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The classic Dragnet opening narration and theme, introducing a true crime story with names changed to protect the innocent. Creators use it in parodies.
This is the instantly recognisable opening of Dragnet, beginning with its dramatic four-note brass theme before a calm, authoritative narrator announces that the story you are about to see is true and that the names have been changed to protect the innocent. The music is bold, urgent and slightly ominous, while the voice is steady and matter-of-fact, creating the feeling of an official police case file being opened. That contrast makes listeners immediately expect a serious investigation, which is exactly why it works so well when the reveal that follows is ordinary, silly or completely unexpected.
