"Mystery directed by Francis Searle."
Richard Carlson
as Steve Smith ("Whispering Smith")
Rona Anderson
as Anne Carter
Greta Gynt
as Louise Balfort
Herbert Lom
as Roger Ford
Alan Wheatley
as Hector Reith
James Raglan
as Insp. Dave Meeker
Daniel Wherry
as Dr. Taren
Danny Green
as Cecil
Reginald Beckwith
as Manson
Michael Ward
as Hotel Desk Clerk
Stanley Baker
as Reporter
Laurence Naismith
as Parker
Dora Bryan
as Miss La Fosse
Francis Searle
Director
John Gilling
Story
Frank H. Spearman
Characters
Steve Fisher
Screenplay
James Needs
Editor
