An actor is murdered live on air whilst a play is being broadcast. Everyone in the play and broadcasting house fall under suspicion.

Actor Edmund Davey becomes a star overnight when his wife and co-star teams up with the secretary of a noted stage critic to produce a glowing review of his 'Othello'.

A behind-the-scenes GPO Film Unit documentary (directed by Stuart Legg) that races from studio rehearsals and newsrooms to control rooms and transmitters, weaving speeches, music, and outside broadcasts—featuring voices like H. G. Wells and Ramsay MacDonald—into a kinetic portrait of how the BBC’s national “voice” is made.