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.

Cast:Basil Rathbone, Nigel Bruce, Marjorie Riordan, Rosalind Ivan, Morton Lowry, Leslie Vincent,

Genre:Mystery, Crime, Thriller, Adventure, Romance,

country:United States of America,

Production:Universal Pictures,