 One version of the novel she submitted to the publisher was returned to her for revision because all of the victims in the story were female while all the spirits the students were channeling were male.The publisher was concerned that feminists would have a problem with this idea, so Duncan changed the spirit of the dead poet from Alan Seeger to Emily Brontë, after which the book was accepted for publication.For a scene in the novel which discussed how Madame Duret aged a painting, Duncan consulted her artist friend Betty Sabo, who explained how the process works and reviewed her manuscript to make sure she described it correctly.