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The Problem of Thor Bridge 

A governess is arrested for the murder of her employer's wife.


(as Michael Simpson)


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




Episode complete credited cast:
J. Neil Gibson
Celia Gregory ...
Maria Gibson
Grace Dunbar
Niven Boyd ...
Marlow Bates
Sergeant Coventry
Mr. Ferguson
Mr. Joyce Cummings Q.C.
Dean Magri ...


When Maria Gibson is shot through the head while standing on the Thor Bridge on her estate, the family's governess, Grace Dunbar, is arrested for murder. Not only does she admit meeting her mistress on the bridge, the police find the murder weapon in her room. She vehemently denies killing the woman and Senator J. Neil Gibson, the dead woman's husband, believes her. He hires Sherlock Holmes to get to the bottom of it all. The Senator admits that he and Miss Dunbar have affections for one another but that neither of them had anything to do with the murder. Dr. Watson is convinced that the Senator is the culprit but Holmes comes to an entirely different conclusion. Written by garykmcd

Plot Summary | Plot Synopsis


TV-PG | See all certifications »




Release Date:

28 February 1991 (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?


Daniel Massey, who portrayed J. Neil Gibson, was the former brother-in-law of Jeremy Brett, who was married to his sister, actress Anna Massey. Also, this was the only time Daniel Massey and Edward Hardwicke appeared together, although they had been friends since childhood. Their fathers, Raymond Massey and Cedric Hardwicke appeared together in Things to Come (1936). See more »


The weapon(s) used in the crime are brass-framed copies of Colt's Single Action Army Revolver, aka the Peacemaker. Colt never made them with brass frames, showing them to be latter-day (i.e., 1950s or later) replicas, probably Italian-made. See more »


Sherlock Holmes: It is a thankless business, Watson. I can discover facts, but I cannot change them.
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User Reviews

Another very enjoyable Sherlock Holmes adaptation
29 June 2011 | by See all my reviews

As some may be aware already, I am a big fan of the Sherlock Holmes stories and Granada adaptations. The Problem of Thor Bridge is one of the better adaptations/episodes of The Case-book of Sherlock Holmes. The pace is very solid on the whole, but there are one or two scenes with perhaps one too many pauses between each action. The story is very interesting with a solution that is clever and not too obvious. The production values are wonderful and very evocative costumes and sets wise while the photography is lovely. As always, the music is hauntingly beautiful, the writing thoughtful, the direction impressive and the acting outstanding not just the note-perfect performances from Jeremy Brett and Edward Hardwicke but also Daniel Massey. In conclusion, very enjoyable. 9/10 Bethany Cox

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