Sara Paretsky discusses her novel, “Guardian Angel.” She begins by explaining that this book is part of a series that follows her character V. I. Warshawski. She talks about the changing demographics of the city of Chicago. She describes that she wrote about junk bonds, and savings and loan companies that scammed the elderly into buying bonds. Paretsky discusses how her character became involved in the novel’s missing person case. She ends the interview by talking about the differences between writing a single book versus a series book.