From 1949 to 1957, Dragnet pioneered new levels of realism on radio. Every crime investigated by Sergeant Joe Friday was taken from the actual case files of the Los Angeles Police Department, with only "the names changed to protect the innocent". There were multi-layered sound effects; the actors used accurate police lingo, abbreviations, and penal codes; and the show didn't shy away from stories about heinous crimes or stories that had unhappy endings. Created and produced by Jack Webb, Dragnet was much more than "just the facts".
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After a game of cards a man is murdered in his home, the house next door from the friendly game. The man passes away in Frank's arms with the last request of 'please don't shoot me'. To find the killer is the next thing to do.