Sherlock Holmes has disappeared into the Highlands, while Mycroft investigates the theft of the Mazarin diamond and Watson suspects a trap in an offer of $5 million to a former professor if he can find a third man surnamed Garrideb.



(by) (as Sir Arthur Conan Doyle), (screenplay)

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Episode complete credited cast:
Agnes Garrideb
Emily Garrideb
James Villiers ...
Lord Cantlemere
Denis Lill ...
Nathan Garrideb (as Richard Caldicott)
Ikey Sanders
Michael Wynne ...
Commissionaire Jenkins


With the British Prime Minister desperately seeking an absent Sherlock Holmes' assistance, the great detective's brother Mycroft steps in to solve the theft of the Mazarin Stone, a huge diamond taken in broad daylight from a museum display. The precious gem was soon to be returned to its original owners, the French, as a gesture of goodwill by Her Majesty's government. The inability to do so may now lead to a diplomatic incident. Using brother Sherlock's extensive files on society's criminal element, Mycroft soon focuses on Count Sylvius as the likely culprit. Dr. Watson has more time to spend in his surgery with his friend away but he is visited by two women with a mystery that would have been perfect for Holmes. They say their brother, who happened to be one of Watson's university professors, with a fantastic tale of a huge inheritance due them if only they can locate a third person that shares their own unique surname. As in turns out, the two cases are not unconnected. Written by garykmcd

Plot Summary | Add Synopsis


Crime | Drama | Mystery


TV-PG | See all certifications »




Release Date:

4 April 1994 (UK)  »

Company Credits

Production Co:

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Technical Specs



Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


Although the part of Nathan Garrideb was played by Richard Caldicot, at least one British TV guide (the established and renowned Radio Times) listed Sebastian Shaw as playing the part, which indicates Shaw may have been cast at an earlier stage. See more »


James Villiers (Lord Cantlemere) is correctly listed in the end credits, but in the opening credits he is incorrectly listed as "James Villers". See more »


[first lines]
Sherlock Holmes: Watson. What is the medical term for obsession? I feel, you see... that I must lay to rest a ghost, which has haunted me for some time. I shall be away for several weeks in the highlands. Meanwhile, your patients might be encouraged by seeing you more often at your consulting room.
Doctor Watson: What about Baker Street?
Sherlock Holmes: Poste restante, Diogenes Club and the irregulars. You know my methods. Oh, I shall be watching you... with my third eye.
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Version of The Adventure of the Mazarin Stone (1951) See more »


Camptown Races
Written by Stephen Foster
Performed by Richard Caldicot
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User Reviews

The worst adaptation of them all.
23 June 2007 | by (United Kingdom) – See all my reviews

This was very difficult to watch, not the least of which was the piercing, at times completely inappropriate, music. This tended to make it difficult to understand what was being said and to concentrate on the action. indeed, the first scene with Holmes was already a chore to make out given Brett's illness. This required the story to be changed and replace Sherlock with his brother Mycroft. For some reason another story was added to pad this out further. The direction is abysmal here; incoherent shots were made with crazy camera angles that further made enjoying this a chore. I found this a particular crime given the fact that I am a great fan of Charles Gray, and his performance was ruined by such sabotage.

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