Nelson says that this supernatural thriller is "all the things I think I don't want to read" and yet she says that once she started she couldn't put it down. "The Demonologist" tells the tale of a Columbia University professor with an expertise in Milton who travels to Venice with his 11-year-old daughter to investigate a claim of demonology. Nelson compares the book to "The Da Vinci Code" but calls it "a bit more literary" and a "scary and quick read."