From the Universal synopsis: Retired Inspector Blake of Scotland Yard learns that Lord Blanton has acquired the sacred "Love Ring"---a cursed jewel that has brought grief to its previous owners. Prince Darius seeks to obtain the ring, and the mummy of a princess of an ancient country to return them to his homeland.
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The Ace of Scotland Yard (1929) is a drama movie. Starring Crauford Kent, Florence Allen, Albert Prisco. Rated 7.5/10 on TMDB. Watch it online free on ZapFlix.