Synopsis by Hal Erickson
Another melange of melodramatic cliches courtesy of screenwriter Willard Mack, The Witch Woman starred Frank Mayo in the dual role of twin brothers Maurice and Louis LaFarge. The nastier of the two siblings is Louis, and it is he who ruins the reputation of country girl Marie Dupre (Ethel Clayton). Driven out of her house and out of her mind, Marie squirrels herself away in a cave, and is soon rechristened "The Witch Woman" by the superstitious townsfolk. She is rescued by a pair of Parisian psychiatrists, who hope to cure Marie of her dementia. One of the doctors, a man of great wealth, adopts Marie as his own daughter. It so happens that the girl's foster-father has a financial adviser -- none other than Maurice LaFarge, the look-alike brother of the man who brought about her downfall. Convinced that Maurice is actually the much-despised Louis LaFarge, Marie goes off the deep end once more. But when Louis is killed by a jealous mistress, Maurice steps forward, clears the air, and marries Marie, who has once again been restored to sanity (we hope).