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)

Directing

Production

Directing

Camera

Sound

Sound

Production

Editing