Fräulein Doktor
A woman spy and some male agents working for the Germans during World War I land at night near the British naval base at Scapa Flow, from a U-boat. The British, led by Col. Foreman, ambush the landing party, capturing two of the men, but the woman gets away. Foreman fakes the execution of one of the spies, thus tricking the second one, Meyer, into becoming a double agent in the hopes of using him to capture his woman accomplice, whom Meyer identifies under the codename Fraulein Doktor. Fraulein Doktor is portrayed as a brilliant spy who stole a formula for a nerve gas which the Germans used to great effect against the Allies on the battlefield.
Meanwhile, Fraulein Doktor seduces a laundryman to find out which ship Lord Kitchener will be sailing on to Russia, and when it will sail. She then helps a German U-boat to sink HMS Hampshire outside Scapa Flow with Kitchener on it, taking his life. For this, she is awarded the Pour Le Merite. Meyer re-appears in Berlin and courts her. The German intelligence service is suspicious of Meyer's escape from the British, but use him to poison Fraulein Doktor because of her addiction to morphine and their distaste for her having murdered Lord Kitchener. Meyer is shown her dead body and later makes his way back to the British to confirm her death.
However, Fraulein Doktor's death was faked for Meyer's benefit so she would be free of suspicion for her next assignment, getting Allied defense plans for a German attack in Belgium. Under cover as a Spanish contessa, she recruits Spanish nurses to staff a hospital train to serve the Allied front. During the trip from Spain to France, she brings aboard German agents who will impersonate Belgian officers to penetrate Belgium Army headquarters and steal the plans.
Col. Foremen is still not convinced of her death and shows up at the same army headquarters with Meyer in tow. The German agents steal the plans and in a deadly shootout with sentries, one gets away back to German lines. The Germans then launch their attack with great success, but Col. Foreman confronts Fraulein Doktor. Meyer kills Foreman but is in turned killed by the advancing German troops. Fraulein Doktor is then whisked away by the Germans, but suffers a breakdown as she is being driven off through all the carnage and death about her.
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