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Sherlock Holmes and Dr. Watson try to track down the Great Mogul, the second-largest diamond in the world.
Did You Know?
, who had played Dr. Watson in several different projects, replaced Trevor Howard
as Major John Sholto, marking the final time Walters would play a character in the Sherlock Holmes canon on screen. See more
The police inspector played by Terence Rigby
is named "Layton", but was supposed to be the more famous Inspector Lestrade. You can clearly see Ian Richardson
and the other actors mouthing the name "Lestrade" throughout the production, but for some reason they were all dubbed over with "Layton". See more
Version of The Sign of Four