RACHEL STAVIS is a screenwriter for film, television, and video games. She has published four horror novels under the name R. H. Stavis. She is also an exorcist, doing her work pro bono and without advertising her services. Her new book is Sister of Darkness: The Chronicles of a Modern Exorcist from Dey St/ William Morrow. As a secular exorcist, Rachel H. Stavis has worked with thousands of tormented people, from small children and Hollywood moguls to stay-at-home moms and politicians. The book is a unique look at demonology removed from religious dogma.