Capt. David Grant
Paul Faber
Capt. Tony Hunter
Marion Decker
Keitel
Bowman
Professor Hansen
Lily Leggett
Inspector Emerson
Lieut. Allen (as Julian Dallas)
George Leggett
Sir George Bell
Naval Surgeon
Hood
Frederick Jannings
Station Official
Ticket Collector
Mrs. Coleman
Inspector Martin
Inspector Longhurst
Sidney Vane
Captain Robert Wilson
Station Master
Taxi Driver
Hotel Porter (uncredited)
Factory Watchman (uncredited)
Young Newlywed (uncredited)