The British government is about to buy the plans to a revolutionary bomb detonator when its plans are stolen and its Austrian inventor murdered. Sherlock Holmes and Dr. Watson go to Vienna to track down the plans.
Directed byPeter Sasdy
Written byBob Shayne, H.R.F. Keating, Arthur Conan Doyle
CountryUnited Kingdom, France, Italy, Belgium, Luxembourg, United States
Runtime180 min
On screen
Christopher Lee
Patrick Macnee
Morgan Fairchild