An actor is murdered live on air whilst a play is being broadcast. Everyone in the play and broadcasting house fall under suspicion.
as Detective Inspector Gregory
as Leopold Dryden
as Joan Dryden
as Rodney Fleming
as Julian Caird
as Guy Bannister
as Poppy Levine
as Herbert Evans
as Sydney Parsons
as Sir Herbert Farquharson
as Chief Commissioner
as Hannen Swaffer
as Vernon Bartlett
as Eric Dunstan
as Gillie Potter
as Elisabeth Welch
as Eve Becke
as Gershom Parkington
as Percival Mackey
as Joseph Higgins (uncredited)
as Police Doctor (uncredited)
as Foreigner (uncredited)
as Weisskopf (uncredited)
as Man on BBC Reception Desk (uncredited)
as Detective (uncredited)
as Peter Ridgwell (uncredited)
as Wife's Lover on Broadcast (uncredited)
