 Originally a radio show. However, the radio show was merely "The  Adventures of Sam Spade" with a different name.  Dashiell Hammett (qv), the creator of Spade, was one of those  whose reputations was damaged during the McCarthy hearings, and as  such Spade was promptly done away with and replaced by Charlie Wild.  (The name came from Wildroot Hair Oils [the shows sponsor] catch  phrase: "Youre getting Wildroot Hair Oil, Charlie.") Literally  nothing else changed, not even the identity of the secretary, Effie  Perrine. No records of the radio show survive.