In addition to the television version, "What's My Line" was also broadcast on network radio for a short time. From May 20 to August 27, 1952, an NBC Radio Network version was produced on Tuesday nights with the same cast as the TV version. After August 27, the program was then broadcast live on CBS Radio on Wednesday nights at 8:00 PM for 10 months, concluding July 1, 1953. The radio version is notable for the only appearances of Marlene Dietrich, Constance Bennett, and Marlon Brando.