The Hope Diamond Mystery
| MPAA Rating: | NR |
| Genre: | Action, Adventure |
| Country: | United States |
| Directed By: | Stuart Paton |
| Written By: | Charles W. Goddard, May Yohe, John B. Clymer |
| Cast: | May Yohe, Arthur Clayton, Grace Darmond, George Chesebro, Boris Karloff, Harry Archer, Ethel Shannon, Harry Carter, Carmen Phillips, William Marion, William Buckley |
| In Theaters: | Feb 19, 1921 |
| Runtime: | 5 hours |
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