An unknown thief steals an important naval treaty from a Foreign Office clerk; Sherlock Holmes sets out to find it.



(by) (as Sir Arthur Conan Doyle), (developed for television by) | 1 more credit »




Episode complete credited cast:
Alison Skilbeck ...
Ronald Russell ...
Nicholas Geake ...
Charles Gorot
Pamela Pitchford ...
John Malcolm ...
David Rodigan ...
Eve Matheson ...
John Taylor ...
Dr Ferrier


An unknown thief steals an important naval treaty from the office of Mr. Percy Phelps, a Foreign Office clerk. Phelps's distress gives him a brain fever that lasts for nine weeks. As he begins to recover, he writes to his old schoolmate, Dr. Watson, begging him to invite Sherlock Holmes to investigate the matter and find the treaty. Otherwise, his honor and happiness are gone forever. Holmes takes up the case with zest, but gives Phelps no false hopes. The mystery is as dark and tangled as any he has known. Written by J. Spurlin

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Plot Keywords:

brain fever | See All (1) »


Crime | Drama | Mystery


TV-PG | See all certifications »


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Release Date:

8 May 1984 (UK)  »

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Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


This episode makes reference to Holmes's cocaine use. See more »


Mrs. Hudson: [referring to the recovered Naval treaty] A "Scotswoman's breakfast" indeed! A silly bit of paper!
See more »

Crazy Credits

Illustrations by Paget from the original story are seen during the credits. See more »


Version of The Naval Treaty (1922) See more »

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User Reviews

Very good if not one of the best
18 May 2012 | by (United Kingdom) – See all my reviews

The Naval Treaty is a strong episode with a lot that makes the Granada Sherlock Holmes series so great evident. It's not one of the best, with the perpetrator rather obvious from the get go due to a lesser amount of suspects as usual. However, the story is the usual clever and mostly compelling standard, and the script is of high quality, thought-provoking and sometimes playful with some suspenseful parts too. The music is wonderful, I always find the music in this series haunting, beautiful or often both, and this episode is an example of the music being both. The production values are typically splendid, evocative and very beautiful-looking. The photography is always focused and fluid. The acting is strong too, the support cast are good but nobody as such stood out. David Burke is a composed and intelligent Watson, but this episode belongs to the supreme Holmes of Jeremy Brett, who never fails to delight with his gritty baritone and towering presence. All in all, not one of my favourites but still very good. 8/10 Bethany Cox

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