The Big Key
Maria Comacho's body is discovered in a churchyard, and investigators must work with limited evidence—just a key, a pen, and a smudge of shoe polish—to solve her murder.
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A woman named Maria Comacho turns up dead in a church graveyard. The only evidence left behind is small: one key, one pen, and a stain from shoe polish.
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 Key.” Dragnet. Radio broadcast, May 25, 1950.
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