

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.
Acting
Rathbone's Holmes—icy, sharp, impossibly smug
Production
Fake boat sets that somehow still work
Writing
Watson's bumbling saves the day accidentally

Director
Roy William Neill
Trivia, insights & behind the scenes
This was the twelfth of fourteen Rathbone-Bruce Holmes films, and the only one set almost entirely at sea.
Released months after WWII ended, its European royalty-in-exile plot resonated with real displaced monarchs and fleeing governments.
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