Grace DarmondGrace Darmond was 27 in The Hope Diamond Mystery as 'Mary Hilton / Bibi'.
Harry CarterHarry Carter was 41 in The Hope Diamond Mystery as 'Sidney Atherton / Nang Fu / Ghung'.
George ChesebroGeorge Chesebro was 32 in The Hope Diamond Mystery as 'John Gregge / Jean-Baptiste Tavanier'.
Boris KarloffBoris Karloff was 33 in The Hope Diamond Mystery as 'Priest of Kama-Sita / Dakar'.
Carmen PhillipsCarmen Phillips was 26 in The Hope Diamond Mystery as 'Wanda Atherton / Miza'.
Harry ArcherHarry Archer was 32 in The Hope Diamond Mystery as 'Johnson'.
Arthur ClaytonArthur Clayton was 19 in The Hope Diamond Mystery as 'Lord Francis Hale (as Captain C. Clayton)'.
Ethel ShannonEthel Shannon was 22 in The Hope Diamond Mystery as 'Lady Francis Hale'.William BuckleyWilliam Buckley was >> in The Hope Diamond Mystery as 'Reginald Travers (aka Putnam Bradley Stone)'.William MarionWilliam Marion was 43 in The Hope Diamond Mystery as 'James Marcon / Bagi'.May YoheMay Yohe was >> in The Hope Diamond Mystery as 'Lady Francis Hope'.
Stuart PatonStuart Paton was 37 in The Hope Diamond Mystery as 'Director'Charles W. GoddardCharles W. Goddard was >> in The Hope Diamond Mystery as 'Writer'John B. ClymerJohn B. Clymer was >> in The Hope Diamond Mystery as 'Writer'