The Mystery Mind (1920)

A murderous gang of mysterious creepy killers mark a young heiress for death. They are led by a ghostly voice known only as the "The Mystery Mind." Will her finance save her just in time, and stop the gang from finding the lost Treasure of Atlantis? Who is "The Mystery Mind"? Alas, we will never find out the answers, as the serial is believed lost. Or will we? Stay tune.