Desc: The Mark of the Beast: Directed by Thomas Dixon Jr.. With Robert Ellis, Madelyn Clare, Warner Richmond, Gustav von Seyffertitz. Psychologist David Hale learns that his fiancée, Ann Page, has strong psychic powers. However, she falls under the influence of jewel thief Donald Duncan and agrees to marry him instead, apparently because he resembles her dead father. Ann accompanies Donald to his mother's cabin in the mountains, where she discovers her husband's true character. David is compelled by professional curiosity to follow the couple, and rescues Ann when the brutish Donald attacks her. That night, Donald's mother stabs her son while retrieving some stolen jewels, unaware of his identity. An operation to save Donald fails, leaving David and Ann free to marry.