character - Colonel Ross

character - Hinchcliffe

character - Dr. Abbott

character - Von Moltke

character - Dr. Lucas

character - Charles Merrow

character - Charles Merrow

character - Oxted

character - Dr. Chisolm

character - The Hon. Mr. Justice Yearsley

character - Mr. Justice Yearsley

character - Prince Vasili Kuragin

character - Basil Stewart

character - Doctor (uncredited)

character - Hunter

character - Hacker

character - Brigadier

character - The Inspector

character - Charles Baldon

character - Wolf Eisen

character - Frank Houghton

character - Oliver Manson

character - Dr. Tirpitz

character - Alec Prosser-Jones

character - The Stranger

character - Major Andrew Carlyle

character - Inspector

character - Mr. Arditti

character - Derreck Alwyn

character - Peter Naylor