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Sherlock Holmes and Doctor Watson get involved with Balkan terrorists to save Emperor Franz Joseph I of Austria from an assassination at the opera house and prevent World War I.
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Billed Cast
Christopher Lee
Sherlock Holmes
Patrick Macnee
Dr. Watson
Morgan Fairchild
Irene Frances Adler
John Bennett
Sigmund Freud
Michael Siberry
Franz Winterhauser
Dominic Jephcott
Major Von Bork
Frank Middlemass
Dr. Froelich
James Bree
Franz Dietrich
Tom Chadbon
Zygovich
Paul Humpoletz
Hugo Oberstein
Tom Lahm
Elliott Ness
Ronald Hines
Reginald Cholmondley
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