as Alec Prosser-Jones
as Hacker
as Mr. Arditti
as Doctor (uncredited)
as Dr. Tirpitz
as Dr. Lucas
as Derreck Alwyn
as The Inspector
as Colonel Ross
as Charles Merrow
as Dr. Chisolm
as The Hon. Mr. Justice Yearsley
as Mr. Justice Yearsley
as Major Andrew Carlyle
as Inspector
as Brigadier
as Wolf Eisen
as Basil Stewart
as Dr. Abbott
as Frank Houghton
as Prince Vasili Kuragin
as Peter Naylor
as Von Moltke
as Hinchcliffe
