Secret Agent (1936)

During World War I, British novelist and soldier Edgar Brodie is recruited by British Intelligence, faking his death to assume the identity of Richard Ashenden. Tasked with eliminating a German spy in Switzerland, Brodie is joined by two operatives: a ruthless assassin known as the General and Elsa Carrington, who poses as his wife. As they track their target, a series of moral dilemmas arise.