Overview

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

Sherlock Holmes

Nigel Bruce

Doctor Watson

Marjorie Riordan

Sheila Woodbury

Rosalind Ivan

Agatha Dunham

Morton Lowry

Steward

Leslie Vincent

Nikolas Watson

Martin Kosleck

Mirko