Dragnet was an American radio police drama that drew on the case books of the Los Angeles Police Department for its stories.

Carter Brown Mysteries was a crime detection thriller series produced by Grace Gibson Radio Production and first broadcast in 1957.

We're sharing three full-length episodes of popular horror and thriller radio serials of the 1940s and '50s.

This is an episode of radio serial Dr Paul (1963), from Grace Gibson Productions.

This is an episode of the radio serial Cattleman (1961), from Grace Gibson Productions.

This is an episode of Dossier on Demetrius (1951), from Grace Gibson Productions.

This is an extract from the 1980s radio serial Castlereagh Line, by Grace Gibson Productions.

In this episode of the 1958 radio series Phantom Time, husband and wife Lewis and Thelma Waring receive a visit from a mysterious stranger while on their Christmas holidays in a remote cottage in t

An excerpt from a later episode (c1963) of the long-running Grace Gibson Productions radio serial Dr Paul, featuring Brigid Lenihan (Molly), Laurel Mather (Elizabeth) and Amber M