The Hope Diamond Mystery: Reparto
Grace Darmond
Mary Hilton / Bibi
Harry Carter
Sidney Atherton / Nang Fu / Ghung
George Chesebro
John Gregge / Jean-Baptiste Tavanier
Boris Karloff
Priest of Kama-Sita / Dakar
Carmen Phillips
Wanda Atherton / Miza
Harry Archer
Johnson
Arthur Clayton
Lord Francis Hale (as Captain C. Clayton)
Ethel Shannon
Lady Francis Hale
William Buckley
Reginald Travers (aka Putnam Bradley Stone)
Frank M. Seki
Saki
William Marion
James Marcon / Bagi
May Yohe
Lady Francis Hope