Richard Diamond, Private Detective is an American detective drama created by Blake Edwards, which aired on radio from 1949 to 1953. Richard Diamond, Private Detective was a happy-go-lucky detective who answered his telephone with atrocious commercial jingles and was a master of the verbal putdown (especially with the police). 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.