The Randolph family have a tradition of working in the British colonial service. Clive comes home from a mission in the Gold Coast of Africa accompanied by his wife Helen. He discovers his younger brother John, is not keen on following in his footsteps. John is then persuaded to try colonial service by his grandfather. He is accompanied by Clive who has been sent to investigate the source of a series of radio broadcasts that are sewing unrest throughout the world. These may be linked to Hugo Zurof, a man plotting to rule the world.
Douglas Fairbanks Jr.
Basil Rathbone
Barbara O'Neil
Lionel Atwill
Virginia Field
C. Aubrey Smith
Melville Cooper
Mary Forbes
John Burton
Arthur Mulliner
Theodore von Eltz
Douglas Walton
Cecil Kellaway
Lionel Belmore
Sidney Bracey
Jess Lee Brooks
Russell Burroughs
Frederick Clarke
Harry Cording
Jack Deery
Al Duvall
James Eagles
Mary Field
Lawrence Grant
Eddie Hall
Holmes Herbert
Claude Horton
Philip Hurlic
Brandon Hurst
Olaf Hytten
Edward Keane
Robert Emmett Keane
Walter McGrail
Lew Payton
Hilda Plowright
Napier Raikes
Hassan Said
C. Montague Shaw
Ivan F. Simpson
Eric Snowden
Eric Wilton