

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

Detective Inspector Gregory

Leopold Dryden

Joan Dryden

Rodney Fleming

Julian Caird

Guy Bannister

Poppy Levine

Herbert Evans

Sydney Parsons

Sir Herbert Farquharson

Chief Commissioner

Hannen Swaffer

Vernon Bartlett

Eric Dunstan

Gillie Potter

Elisabeth Welch

Eve Becke

Gershom Parkington

Percival Mackey

Joseph Higgins (uncredited)

Police Doctor (uncredited)

Foreigner (uncredited)

Weisskopf (uncredited)

Man on BBC Reception Desk (uncredited)

Detective (uncredited)

Peter Ridgwell (uncredited)

Wife's Lover on Broadcast (uncredited)

Director

Director of Photography

Art Direction

Editor

Costume Design

Adaptation

Novel

Assistant Director

Sound Recordist

Production Supervisor

Novel

Music Director

Original Music Composer