Mystery Crime Thriller
Holmes and Watson board a passenger train bound from London to Edinburgh, to guard the Star of Rhodesia, an enormous diamond worth a fortune belonging to an elderly woman of wealth; but within the first hour of the trip, the woman's son is murdered and the diamond stolen and any of the passengers in their car could be the killer thief.
Directed by
Roy William Neill
Leyland Hodgson
Senior Conductor (uncredited)
Basil Rathbone
Sherlock Holmes
Alan Mowbray
Major Duncan-Bleek
Billy Bevan
Conductor Taking Tickets
Harry Cording
Mock the Undertaker (uncredited)
Nigel Bruce
Dr. John H. Watson
Gerald Hamer
Alf Shallcross (uncredited)
Dennis Hoey
Inspector Lestrade
C. Aubrey Smith
Elderly gentleman on train station (uncredited)
Renee Godfrey
Vivian Vedder
Mary Forbes
Lady Margaret Carstairs
Frederick Worlock
Prof. William Kilbane
Skelton Knaggs
Sands - Moran's Accomplice
Geoffrey Steele
Roland Carstairs
Janet Murdoch
Mrs. Shallcross (uncredited)
Charles Knight
Baggage Car Guard (uncredited)
Boyd Davis
"Inspector MacDonald" (uncredited)
Bobby Wissler
Mock Jr. (uncredited)
Gilbert Allen
Dining Car Steward (uncredited)

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