Laboratory Technician
Maj. McDougal
Hopkins
Customer at Petrol Station (uncredited)
Hamish Gillespie
Dr. Soames
Lloyd Williamson
Hotel Porter
Sergeant Rutherford
Constable (uncredited)
Inspector Ames
Customs Chief J. S. Blake
Victor Skyway
Alec Pearce
Claw Paw
Studio Driver
Menzies
Medical Officer
Fotheringay
Ship's Doctor