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