The Palace of Darkened Windows (1920)

While traveling through India with her Aunt Eva, Arlee Eversham meets Billy Hill, an American, and Captain Falconer, a British officer, both of whom fall in love with her. Curiosity leads Arlee to accept an invitation from the Rajah of the province to visit his palace. Aunt Eva receives a letter of invitation intended for her niece and, thinking that it is for herself, goes to the palace. Once there, both women are held prisoners, destined to become members of the Rajah's harem, until Arlee manages to send word to Billy of her predicament. Accompanied by Captain Falconer, Billy leads a successful rescue in which he saves Arlee, and the Captain discovers, much to his consternation, that he has rescued Aunt Eva.