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

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