When a woman receives a series of valuable pearls from an unknown party after the disappearance of her father, Sherlock Holmes is hired to investigate.



(novel), (dramatisation) | 2 more credits »

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Episode cast overview, first billed only:
Ann Bell ...
Paul Daneman ...
John Stratton ...
Ailsa Grahame ...
Howard Goorney ...
Grace Arnold ...
Ahmed Khalil ...
Lal Rao (as Ahmed Kahlil)
Syd Conabere ...
McMurdo (as Sydney Conabere)
Tony McLaren ...
Annabella Johnston ...
David Boliver ...
Mr. Mordecai Smith (as David S. Boliver)
Ann Way ...
Zena Keller ...


When she receives pearls beyond price and a mysterious message from an anonymous source, Miss Mary Morstan goes to the famous consulting detective of 221B Baker St., Mr. Sherlock Holmes for advice in how to answer the message. Together with his staunch comrade, Dr. John Watson, and a mutt named Toby, Holmes tracks down the secret of the Sign of Four. Written by Kathy Li

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Horror | Crime | Drama | Mystery





Release Date:

16 December 1968 (UK)  »

Company Credits

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Technical Specs

Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


Thaddeus & Bartholomew Sholto: As you can see, I am a refined man, and there is nothing more unaesthetic than a policeman.
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Featured in Timeshift: A Study in Sherlock (2005) See more »

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User Reviews

the best Granada feature, and a great Sherlock Holmes film
28 July 2000 | by (USA) – See all my reviews

This is a gorgeous production, expertly filmed, beautifully directed and scripted. The cast is also spot on and the pacing rarely flags.

The boat chase on the Thames is a marvel. This was the first 'chase scene' in detective fiction and it seems as fresh here as it was 100 years ago.

My one change would have been to put back the original beginning and end to the story, but the Granada production left Watson a bachelor and so there is no mention of his marriage. They had also used the 'cocaine' opening in another show and so did not repeat it here.

Jeremy Brett and Edward Hardwicke give outstanding performances and the rest of the cast is also excellent.

4 of 9 people found this review helpful.  Was this review helpful to you?

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