Richard Diamond, Private Detective, Vol. 1

Created by Blake Edwards, "Richard Diamond, Private Detective" is a lighthearted radio series that originally aired in 1949, starring Dick Powell as a suave New York private eye known for his humor and singing. The show features episodes involving intriguing cases and includes notable appearances, such as Mary Tyler Moore's partial appearance as Diamond's secretary. A later version aired in 1957 with David Janssen taking on the lead role, continuing the series' mix of crime solving and entertainment.