In "Khaled: A Tale of Arabia" the main protagonist, Khaled, has no soul - but he is offered one chance: if his wife comes to love him, despite his lack of a soul, he will become fully human.
In "The Witch of Prague" the main character is on a quest to find the woman he loves. When he gets to Prague, he falls under the spell of a witch.

Francis Marion Crawford (1854 – 1909) was an American writer noted for his many novels, especially those set in Italy, and for his classic weird and fantastic stories.