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The Big Casting

A woman named Marie Robertson dies from a gunshot wound caused by a .45 automatic pistol. Her husband claims she killed herself, but the evidence points to murder. This episode shows how Dragnet brings police laboratory methods to life on screen. The Mystery Writers Of America gives script writer Jim Moser an "Edgar" award for his work on the series.

Dragnet is an American radio series, enacting the cases of a dedicated Los Angeles police detective, Sergeant Joe Friday, and his partners. The show took its name from the police term "dragnet", meaning a system of coordinated measures for apprehending criminals or suspects.

Wikipedia. CC BY-SA 4.0. Updated Jul 3, 2026.

“The Big Casting.” Dragnet. Radio broadcast, May 3, 1951.