The curse of the legendary blue Hope Diamond on all its owners is dramatized from the gem's discovery in 17th Century India until its donation to the Smithsonian Institute.
| Actor | Role |
|---|---|
 Samantha EggarEvalyn Walsh McLean | Evalyn Walsh McLean |
 Martha ScottMumsie | Mumsie |
 Harry Dean StantonPresident Warren G. Harding | President Warren G. Harding |
 Robert ClaryLouis XVI | Louis XVI |
 Bradford DillmanNed McLean | Ned McLean |
 Rod SerlingNarrator | Narrator |
 Claudine LongetMarie Antoinette | Marie Antoinette |