
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.
Genres:

Basil Rathbone as Sherlock Holmes

Nigel Bruce as Doctor Watson

Marjorie Riordan as Sheila Woodbury

Rosalind Ivan as Agatha Dunham

Morton Lowry as Steward

Leslie Vincent as Nikolas Watson

Martin Kosleck as Mirko

Rex Evans as Gregor

John Abbott as Jodri

Gerald Hamer as Kingston

William 'Wee Willie' Davis as Gubek

Frederick Worlock as Prime Minister

Tom Dillon as Matthias Cherney (uncredited)

James Carlisle as Aide (uncredited)

Olaf Hytten as Stimson (uncredited)

Gordon Jackson as Steward (uncredited)
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