1935: 2FC (Sydney), 1 October.
Producer Lawrence H. Cecil.
Cast incl. Ronald Morse (the author), Vivian Edwards (the detective), Nancye Stewart (Isobel Dryden), Walter Plinge (the lover), Mayne Linton (Leopold Dryden), Robin Ordell (the boy), Bert Barton (the doorman), Charles Wheeler (Sydney Parsons), Guy Bannister (Eric Masters), H. G. Horner, Reg Hawthorne (2FC control room operator), (State Manager of the ABC), Ewart Chapple (programme director), James J. Donnelly (research department); Heath Burdock announcer), Bryson Taylor (announcer), Conrad Sharlton (studio manager), Lawrence H. Cecil (dramatic producer), Fred Wahite (conductor), Oscar Lansbury (sound effects section), Professor Charteris (lecturer), Rene Dixon (soubrette), Grace Quine (singer).