Mystery Crime Thriller
After the King of Ruthenia has been assassinated, Holmes and Watson are engaged to escort his son to Europe via Algiers, aboard a transatlantic ocean liner which also carries a number of suspicious persons, any of whom may be involved in a plot to also assassinate him.
Directed by
Roy William Neill
Basil Rathbone
Sherlock Holmes
Nigel Bruce
Doctor Watson
Gordon Jackson
Steward (uncredited)
Frederick Worlock
Prime Minister
John Abbott
Jodri
Olaf Hytten
Stimson (uncredited)
Martin Kosleck
Mirko
Rex Evans
Gregor
Rosalind Ivan
Agatha Dunham
Morton Lowry
Steward
Marjorie Riordan
Sheila Woodbury
Gerald Hamer
Kingston
William 'Wee Willie' Davis
Gubek
Leslie Vincent
Nikolas Watson
Tom Dillon
Matthias Cherney (uncredited)
James Carlisle
Aide (uncredited)

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