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.
- Director
- Roy William Neill
- Writers
- Leonard Lee
Themesalgiers, algeriaassassinassassination attemptblack and whiteheir to the throne
