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:
Rosalie Williams ...
Phyllis Calvert ...
Agnes Garrideb
Barbara Hicks ...
Emily Garrideb
Lord Cantlemere (as James Villers)
Denis Lill ...
Richard Caldicot ...
Nathan Garrideb (as Richard Caldicott)
Harry Landis ...
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





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.
See more »


Version of The Adventure of the Mazarin Stone (1951) See more »


Camptown Races
Written by Stephen Foster
Performed by Richard Caldicot
See more »

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User Reviews

Interesting try but rather dull and strange
15 April 2011 | by (United Kingdom) – See all my reviews

This adaptation is worth watching, as an overall Granada Sherlock Holmes adaptation it is not as disappointing as The Last Vampyre and The Eligible Bachelor. But... I couldn't get over how strange and dull it was, though in fairness it was an interesting try at something new, which meant writing Mycroft in the Holmes role and merging two stories together into one.

Granted it is very well made on the whole. The sets are wonderfully meticulous, the costumes are typically beautiful and most of the camera angles are skilled. However, I did have problems with some of the lighting, at the end it was so dark you couldn't see what was happening really, though I could just about see Jeremy Brett's(who was very ill and hardly in it, though his appearance at the end actually makes up for the omission of the moving scene in the story concerning Holmes' true feelings for Watson) face and Charles Gray's eyes. I did like the music on the whole, the beginning motif was very haunting and there are some beautiful and intense parts too, but some of the music in the build-ups got rather overbearing in an attempt to make it sound intense. And I can't fault the acting of the two leads, Edward Hardwicke is an appropriately dignified, thoughtful and composed Watson, while Charles Gray, not just in the voice, face and mannerisms but especially in those haunted and shrewd eyes he has, is brilliant as Mycroft. Everybody else is good, without standing out too much.

However, The Mazarin Stone has a lot of problems. One is the pace, not as tedious mind you as the aforementioned adaptations but I did find bits on the dull side. The direction was a disappointment too, too low key and over-the-top for my liking especially in the ending, which was the definition of strange not just story wise but theatrically too. What hurt the Mazarin Stone most was the way the script and story were written. The script does have some intelligent and witty quips with Mycroft but all the other characters are saddled with dialogue that is banal even for Sherlock Holmes, and some of the secondary characters are uninteresting. The story is made up of two stories, and it doesn't help that the stories even by Conan Doyle standards are fairly weak. But the structure and telling of the plot here is very confused, unfortunately I saw it live so I couldn't re-wind the bits(which were a fair few actually) that I didn't understand.

Overall, I am a fan of this series, but I didn't care for this one. Perhaps it needs a re-watch so I can understand the plot better, which I wouldn't mind doing seeing as Gray is so good. But it is such a shame that the direction, pace and story spoiled what could have been a solid adaptation, making it an interesting but failed attempt. 5/10 Bethany Cox

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