Discover
Kirk Alyn
Inspector David Worth
Rosemary La Planche
Laura Keith
Roy Barcroft
Spade Gordon
Carol Forman
Nila
James Dale
Agent Steve Evans
Bruce Edwards
Prof. Paul Williams [Chs. 1-6]
James Craven
Prof. James Clayton [Chs. 1, 10-12]
Dave Anderson
Porter [Ch. 9]
Art
Fred A. Ritter
Art Direction
Camera
John MacBurnie
Director of Photography
Directing
Fred C. Brannon
Director
Production
Franklin Adreon
Associate Producer
Sound
Stanley Wilson
Original Music Composer
Writing
William Lively
Screenplay
Royal K. Cole
Screenplay
Sol Shor
Screenplay
Basil Dickey
Screenplay
Art
Fred A. Ritter
Art Direction
Camera
John MacBurnie
Director of Photography
Directing
Fred C. Brannon
Director
Production
Franklin Adreon
Associate Producer
Sound
Stanley Wilson
Original Music Composer
Writing
William Lively
Screenplay
Royal K. Cole
Screenplay
Sol Shor
Screenplay
Basil Dickey
Screenplay