Approved | | Crime, Drama, Film-Noir
When the fabled Star of Rhodesia diamond is stolen on a London to Edinburgh train and the son of its owner is murdered, Sherlock Holmes must discover which of his suspicious fellow passengers is responsible.
Veteran actor C. Aubrey Smith appears in a non-speaking role as an elderly man smoking a pipe on a train platform about 49 minutes into the film.
Lady Margaret Carstairs:
My husband gave it to me on our fifth wedding anniversary.
Sherlock Holmes: 423 carats, isn't it?
Lady Margaret Carstairs: The original diamond was over 700 carats.
Sherlock Holmes: Really?
Lady Margaret Carstairs: Your father had it cut. Less ostentatious.
Dr. John H. Watson: Less ostentatious? It's as big as a duck's egg.
The exterior shots of the train show different trains, including a model and a continental locomotive. At various times running wrong track on double track lines (UK runs on the left); numbers of carriages increase and decrease; carriage livery incorrect for LMS in 1946 (or earlier), should be LMS single colour "crimson lake"; one carriage seems to be all white (and disappears later); an overhead shot of clerestory roofed trains running wrong track, whilst all the other views are arc roofed, whether model or interior shots.
Also available in a colorized version from Hal Roach Studios, that runs 63 minutes.