Loosely based on Lady Francis Hope's book ''The Mystery of the Hope Diamond'', the story of THE HOPE DIAMOND MYSTERY is told in two eras. In 16th century Burma, Tavanier, a French adventurer, steals the diamond from its place on an idol in the Temple of Sita, and the High Priest of the temple (Boris Karloff) swears vengeance and puts a curse upon the jewel. In 20th century London, a high-class crook with hypnotic powers called Sidney Atherton masquerades as an Asian crime-lord to try to steal it. He tries to mind-control Mary Hilton, secretary to rich collector Marcon, in order to accomplish his goal, and John Gregge, a criminologist, and Dakar, the apparent reincarnation of the High Priest, try to stop him and return the jewel to its proper owner. Restored from the 1921 original by the Serial Squadron.
