Mystery Crime Thriller Adventure Romance
After the King of Rovenia 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
Gordon Jackson
Steward (uncredited)
John Abbott
Jodri
Martin Kosleck
Mirko
Nigel Bruce
Doctor Watson
Olaf Hytten
Stimson (uncredited)
Frederick Worlock
Prime Minister
Rex Evans
Gregor
Morton Lowry
Steward
Rosalind Ivan
Agatha Dunham
Gerald Hamer
Kingston
William 'Wee Willie' Davis
Gubek
Tom Dillon
Matthias Cherney (uncredited)
Marjorie Riordan
Sheila Woodbury
Leslie Vincent
Nikolas Watson
James Carlisle
Aide (uncredited)

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