Dick Powell starred in the Richard Diamond, Private Detective radio series as a wisecracking, former police officer turned private detective. Episodes typically open with a client visiting or calling cash-strapped Diamond’s office and agreeing to his fee of $100 a day plus expenses, or Diamond taking on a case at the behest of his friend and former partner, Lt. Walter Levinson. Diamond often suffers a blow to the head in his sleuthing pursuits. Most episodes end with Diamond at the piano, singing a standard, popular song, or showtune from Powell’s repertoire to his girlfriend, Helen Asher, in her penthouse at 975 Park Avenue.
It began airing on NBC Radio on April 24, 1949, picked up Rexall as a sponsor on April 5, 1950, and continued until December 6, 1950. With Camel cigarettes as a sponsor, it moved to ABC from January 5, 1951, to June 29, 1951, with Rexall returning for a run from October 5, 1951, until June 27, 1952. Substituting for Amos ‘n’ Andy, it aired Sunday evenings on CBS (again, for Rexall) from May 31, 1953 until September 20, 1953.