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

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