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
John Abbott
Jodri
Basil Rathbone
Sherlock Holmes
Gordon Jackson
Steward (uncredited)
Gerald Hamer
Kingston
Frederick Worlock
Prime Minister
Marjorie Riordan
Sheila Woodbury
Nigel Bruce
Doctor Watson
William 'Wee Willie' Davis
Gubek
Rex Evans
Gregor
Martin Kosleck
Mirko
Morton Lowry
Steward
Rosalind Ivan
Agatha Dunham
Olaf Hytten
Stimson (uncredited)
Leslie Vincent
Nikolas Watson
Tom Dillon
Matthias Cherney (uncredited)
James Carlisle
Aide (uncredited)

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